SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]
Basis of Presentation	The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding annual financial information. The accompanying consolidated financial statements, in the opinion of management, reflect all normal recurring adjustments necessary to fairly present the financial position, results of operations, cash flows, and change in stockholders’ equity for the periods presented. Certain amounts in the prior period consolidated financial statements have been conformed to current period presentation.
Basis of Consolidation	The Company consolidates entities in which it has a controlling financial interest, including Rivian and Volkswagen Group Technologies, LLC and Mind Robotics, Inc. and Mind Robotics, LLC (see Note 19 "Variable Interest Entities” for more information). Intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Accounting estimates are an integral part of the consolidated financial statements. These estimates require the use of judgments and assumptions that may affect the reported amounts of assets, liabilities, revenues, and expenses in the periods presented. Estimates are used for, but not limited to, warranty reserves, inventory valuation, property, plant, and equipment, leases, income taxes, stock-based compensation, commitments and contingencies, residual value risk sharing (“RVRS”) liability, and other revenue transactions, including progress toward the completion of the Joint Venture’s combined performance obligation. The Company believes that the accounting estimates and related assumptions employed in the consolidated financial statements are appropriate and the resulting balances are reasonable under the circumstances. However, due to the inherent uncertainties involved in making estimates, actual results could differ from the original estimates, requiring adjustments to estimated amounts in future periods.
Account Receivables, Net	Accounts receivable primarily consist of amounts due from customers for the sale of electric vehicles (“EVs”) and from the Volkswagen Group for services provided by the Joint Venture (see Note 4 “Revenues ” for more information), and are reported at the invoiced amount less an allowance for any potential uncollectible amounts.
Derivative Instruments	In the normal course of business, the Company is exposed to global market risks, including the effect of changes in certain commodity prices, interest rates, and foreign currency exchange rates, and may enter into derivative contracts, such as forwards, options, swaps, or other instruments, to manage these risks. Derivative instruments are recorded on the Consolidated Balance Sheets in either “Other current assets” or “Current portion of deferred revenues, lease liabilities, and other liabilities” and are measured at fair value. They are classified within Level 2 of the fair value hierarchy because they are valued using observable inputs other than quoted prices for identical assets or liabilities in active markets. For commodity contracts, the Company records gains and losses resulting from changes in fair value in “Cost of revenues” in the Consolidated Statements of Operations and cash flows in “Cash flows from operating activities” in the Consolidated Statements of Cash Flows. The Company also may enter into master netting agreements with its counterparties to allow for netting of transactions with the same counterparty. The Company does not utilize derivative instruments for trading or speculative purposes. The Company has entered into commodity contracts, and the resulting asset, liability, and aggregate notional amounts were not material as of December 31, 2024 and 2025. These derivatives are economic hedges used to manage overall price risk and have not been designated as hedging instruments.
Concentration of Risk	Counterparty Credit Risk Financial instruments that potentially subject the Company to concentration of counterparty credit risk consist of cash and cash equivalents, short-term investments, accounts receivable, customer deposits, derivative instruments, and debt. The Company is exposed to credit risk on cash to the extent that a balance with a financial institution exceeds the Federal Deposit Insurance Company insurance limits. The Company is exposed to credit risk on cash equivalents and short-term investments to the extent that counterparties are unable to settle maturities or sales of investments. The Company is exposed to credit risk on accounts receivable to the extent that counterparties are unable to pay for the sales transaction and on customer deposits to the extent that counterparties are unable to complete the corresponding purchase transaction. The Company is exposed to credit risk on derivative instruments to the extent that counterparties are unable to settle derivative asset positions and on debt to the extent that the senior secured asset-based revolving credit facility (“ABL Facility”) lenders are not able to extend credit. The degree of counterparty credit risk varies based on many factors, including the duration of the underlying transaction and the contractual terms of the underlying agreement. As of December 31, 2024 and 2025, all of the Company’s cash, typically in amounts exceeding insured limits, was distributed across several large financial institutions that the Company believes are of high credit quality. Management evaluates and approves credit standards and oversees the credit risk management function related to cash equivalents, short-term investments, accounts receivable, and customer deposits. As of December 31, 2024 and 2025, the counterparties to the Company’s derivative instruments, the ABL Facility lenders (including JP Morgan Chase Bank, N.A. (“Chase Bank”)), and Chase Bank, from which accounts receivable are due to the Company (see Note 4 "Revenues" for more information) are financial institutions that the Company believes are of high credit quality. Supply Risk The Company is subject to risks related to its dependence on its suppliers, the majority of which are single-source providers of raw materials or components for the Company’s products. Any inability or unwillingness of the Company’s suppliers to deliver necessary raw materials or product components at timing, prices, quality, and volumes that are acceptable to the Company could have a material impact on the Company’s business, prospects, financial condition, results of operations, and cash flows. Fluctuations in the cost of raw materials or product components and supply interruptions or shortages could materially impact the Company’s business. The imposition of tariffs and other trade barriers may make it more costly to import raw materials and product components and could result in disruptions in supply and production.
Impairment of Long-Lived Assets	Property, plant, equipment, and finite-lived intangible assets are reviewed for impairment whenever events or changes in circumstances occur that indicate that the carrying amount of an asset group may not be fully recoverable. Events that trigger a test for recoverability include material adverse changes in projected revenues and expenses, present cash flow losses combined with a history of cash flow losses or a forecast that demonstrates significant continuing losses, significant negative industry or economic trends, a current expectation that a long-lived asset group will be disposed of significantly before the end of its useful life, a significant adverse change in the manner in which an asset group is used or in its physical condition, or when there is a change in the asset grouping. When an indicator of impairment is present, the Company assesses the risk of impairment based on an estimate of the undiscounted cash flows at the lowest level for which identifiable cash flows exist against the carrying value of the asset group. Impairment exists when the carrying value of the asset group exceeds the estimated future undiscounted cash flows generated by those assets. The Company records an impairment charge for the difference between the carrying value of the asset group and its estimated fair market value. Depending on the asset, estimated fair market value may be determined either by use of a discounted cash flow model or by reference to estimated selling values of assets in similar condition.
Employee Benefit Plan	The Company provides a defined contribution plan for substantially all employees in the United States in which the Company provides discretionary matching contributions.
Research and Development Costs	Research and development (“R&D”) costs consist primarily of personnel expenses for teams in engineering and research including cash incentives and stock-based compensation, prototyping expenses, consulting and contractor expenses, software expenses, data services, including hosting, storage, and compute, and allocation of indirect expenses. R&D costs also include the cost of vehicle electrical architecture and software development services funded by the Company (see Note 1 "Presentation and Nature of Operations", Note 4 "Revenues", and Note 19 "Variable Interest Entities" for more information). Most R&D costs are recognized as expenses as incurred.
Selling, General, and Administrative	Advertising costs are recorded in “Selling, general, and administrative” in the Consolidated Statement of Operations as they are incurred.
Equity Method Investments	The Company applies the equity method of accounting to investments in entities over which the Company has significant influence.
Joint Venture Deferred Compensation Program	In addition to the Company's 2015 Long-Term Incentive Plan ("2015 Stock Plan") and 2021 Incentive Award Plan (“2021 Stock Plan” and, together, “Stock Plans”), which permit the grant of restricted stock units, stock options, and other stock-based awards to Joint Venture employees, non-employees including directors, and consultants (see Note 13 "Stock-Based Compensation" for more information), the Joint Venture provides a deferred compensation program that allows for shares of Volkswagen Group equity and phantom shares, in some cases, to be awarded to its employees, non-employees including directors, and consultants, generally vesting in quarterly installments over 2 years. Unvested shares generally are forfeited upon the termination of a grantee’s service. Forfeitures are recorded as an adjustment to compensation expense in the same period as the forfeitures occur. Compensation expense for the awards is recognized on a straight-line basis over the requisite service period. In advance of the grant date, shares of Volkswagen Group equity are purchased over the counter by a trust controlled by the Joint Venture and held until vested. Dividends paid are reinvested and are subject to the same vesting requirements as the underlying shares. Upon vesting, ownership of the shares and reinvested dividends is transferred to the grantee. Shares underlying phantom awards are sold upon vesting, and the proceeds are transferred to the grantee. The shares held in trust are accounted for as an investment in equity securities and carried at fair value within “Other current assets” and “Other non-current assets” on the Consolidated Balance Sheets, with unrealized holding gains and losses recorded in “Other income (expense), net” in the Consolidated Statements of Operations. The accrued liability for deferred compensation also is carried at fair value within “Accrued liabilities” on the Consolidated Balance Sheets, with changes in fair value recorded to compensation expense in the Consolidated Statements of Operations. Purchases of shares of Volkswagen Group equity are recorded in “Purchases of equity securities and short-term investments” in the investing section of the Consolidated Statements of Cash Flows. In April 2025, the trust was formed on behalf of the Joint Venture for the purpose of purchasing and holding shares of Volkswagen Group equity. In May 2025, the trust made the first purchase of shares of Volkswagen Group equity, and the first awards under the deferred compensation program were made. The investment in equity securities and accrued liability for deferred compensation are classified within Level 1 of the fair value hierarchy because they are valued using quoted prices for identical assets or liabilities in active markets and were not material as of December 31, 2025. For the year ended December 31, 2025, unrealized holding gains and losses on the investment in equity securities and deferred compensation expense were not material.
Recently Adopted And Upcoming Accounting Standards Not Yet Adopted	Recently Adopted And Upcoming Accounting Standards Not Yet Adopted ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures enhances the transparency and usefulness of income tax disclosures. The updates are effective for annual periods beginning after December 15, 2024 on a prospective or retrospective basis, though early adoption is permitted. The presentational impacts of this ASU have been adopted retrospectively for the year ended December 31, 2025 (see Note 12 “Income Taxes” for more information). ASU 2024-03, Disaggregation of Income Statement Expenses (“DISE”) improves the disclosures of expenses and requires more detailed information about the types of expenses included in commonly presented expense captions. The new standard is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with retrospective application permitted. The Company is currently evaluating the presentational impact of this ASU and expects to adopt its provisions in the Annual Report on Form 10-K for the year ending December 31, 2027.
Revenues	New Electric Vehicles New EV revenues are primarily derived from the sale of consumer and commercial EVs, as well as related promises that meet the definition of a performance obligation. Revenue from the sale of EVs is recognized at the point in time when control transfers to the customer, which generally occurs upon delivery. The promise to provide over-the-air (“OTA”) vehicle software updates has historically represented a stand ready obligation to provide these services, with revenue related to OTA software updates being recognized ratably throughout the performance period, beginning with control of the vehicle being transferred to the customer and continuing through the estimated useful life of the EV. As a result of enhanced maturity of the vehicle software, during the year ended December 31, 2025, the promise to provide OTA vehicle software updates was determined to be immaterial in the context of the EV sale contract and accordingly, the transaction price is no longer allocated to the promise to provide OTA vehicle software updates. Revenue from the sale of Electric Delivery Vans (“EDVs”) is recognized in accordance with a bill and hold arrangement, under which revenue is recognized when risk of ownership has been transferred to the customer, but pick-up is delayed at the request of the customer. In such cases, the Company does not have the ability to sell the EDVs to another customer, and they are separately identified as belonging to and ready for pick-up by the customer. Payment for EV sales is typically received at or prior to delivery or according to payment terms customary to the business. Sales tax is excluded from the measurement of the transaction price. During the years ended December 31, 2024 and 2025, approximately 37% and 36%, respectively, of the Company’s revenues were from new EV sales to Chase Bank, with Chase Bank entering into leasing arrangements for purchased vehicles. The Company has an obligation to share a portion of the difference between the residual value realized by Chase Bank at the end of the lease term and the residual value determined at lease inception. This obligation is recorded upon delivery of vehicles to Chase Bank as an RVRS liability in “Other non-current liabilities” on the Consolidated Balance Sheets. The RVRS liability is recorded as a reduction to the transaction price and is estimated at the amount the Company is expected to pay to Chase Bank at the end of the lease term. The estimate is based on third-party residual value publications and estimated future prices. While the Company re-evaluates the adequacy of the RVRS liability on a regular basis and makes revisions when necessary, the estimate is inherently uncertain, especially given the limited history of Rivian leases, and more historical experience or updates to benchmarks and projections may cause changes to the RVRS liability in the future. As of December 31, 2024 and 2025 the RVRS liability was not material. The standalone selling prices of performance obligations are estimated by considering costs to develop and deliver the good or service, third-party pricing of similar goods or services, and other available information. The transaction price is allocated among the performance obligations in proportion to the standalone selling prices. Regulatory Credits The Company generates tradable credits from various regulatory standards, including standards related to zero-emission vehicles (“ZEVs”), greenhouse gas, fuel economy, and clean fuel in the United States and Canada. The Company sells regulatory credits to third parties, and revenue is recognized at the point in time that control of the regulatory credits is transferred to the purchasing party. Payment is typically received within one quarter or less of transfer of control of the credits to the customer. As a result of changes to many of the programs governing such tradable credits, the Company‘s ability to continue earning and selling the corresponding credits is uncertain at this time. Software and Services Software and services revenues consist primarily of services provided by the Joint Venture to further develop, customize, and enhance Rivian’s vehicle electrical architecture technology and software for use in the customer’s future vehicle programs, sales of vehicle trade-ins (“remarketing”) and vehicle repair and maintenance services. Remarketing revenue is recognized at a point in time when vehicle title and risk of loss transfer to the customer. Revenues for vehicle repair and maintenance services are recognized over time as services are provided. The combined performance obligation for the services provided by the Joint Venture is satisfied over time, until the vehicle electrical architecture technology and software promised to the customer is completed. In addition to ongoing payments to fund the Joint Venture’s development services, revenue recognized for the combined performance obligation includes the following consideration transferred by the customer: •$1,295 million received for a license of intellectual property related to Rivian’s existing vehicle electrical architecture and software technology •Variable consideration in the form of $250 million received in June 2025 for the achievement of the Financial Milestone (see Note 1 "Presentation and Nature of Operations") •The $210 million to be received no later than January 3, 2028 as part of the Start of Production Milestone payment (see Note 1 "Presentation and Nature of Operations"), and •The $201 million in noncash consideration paid by Volkswagen Group in the form of a loan commitment (see Note 10 "Debt"). The majority of the transaction price is included in the Company’s contract liabilities (i.e., deferred revenues) as of December 31, 2025, and the Company expects to recognize the corresponding revenue over approximately 2.5 years, with the amount of revenue to be recognized each period expected to be relatively consistent over time given the Joint Venture’s steady progress toward satisfaction of the combined performance obligation to develop, customize, and enhance Rivian’s existing vehicle electrical architecture technology and software for use in the customer’s future vehicle programs. It is reasonably possible that the Company’s expectations could change over time according to changes in the pattern of progress, and accordingly the pattern of revenue recognized could be adjusted over time and ultimately differ from current expectations. The Company recognized $73 million and $836 million for the years ended December 31, 2024 and 2025, respectively, of revenue for the combined performance obligation with Volkswagen Group, a related party of the Company. As of December 31, 2024 and 2025, the uncollected amounts related to these revenues in “Accounts receivable, net” on the Consolidated Balance Sheets were not material and $328 million, respectively. Payment for vehicle electrical architecture and software development services is generally due in advance. Payment for remarketing and vehicle repair and maintenance services is typically received when control transfers to the customer or due in accordance with payment terms customary to the business. Deferred Revenues The Company recognizes deferred revenues when payments are received or due before the related performance obligation is satisfied. The Company’s deferred revenues are primarily the result of consideration received in advance for the Joint Venture’s combined performance obligation, including ongoing payments to fund the Joint Venture’s development services, which are generally recognized as revenues within 12 months of receipt, as well as payments for EVs collected prior to delivery, generally satisfied as vehicles are delivered, extended vehicle repair and maintenance contracts, satisfied over the coverage period, and OTA vehicle software updates, generally satisfied over the estimated useful life of the EV. The Company’s deferred revenues exclude fully-refundable customer deposits.
Cost of Revenues	Cost of revenues primarily relates to new vehicles and includes direct materials and personnel expenses, including salaries, wages, bonuses, stock-based compensation, benefits, and employment taxes; manufacturing overhead (e.g., depreciation of machinery and tooling); shipping and logistics costs; and reserves, including for estimated warranty costs and adjustments to write down the carrying value of inventory when it exceeds its estimated net realizable value (“NRV”), as well as cost reductions resulting from the generation of refundable manufacturing-related tax credits accounted for as government grants. Cost of revenues for software and services also includes the cost of vehicle electrical architecture and software development services funded by Volkswagen Group (see Note 1 "Presentation and Nature of Operations" and Note 19 "Variable Interest Entities" for more information).
Warranty and Field Service Actions	The Company provides a manufacturer’s warranty on new consumer vehicles. A warranty reserve is recorded at the time of sale and once a specific field service action has been identified. The amount reserved is comprised of an actuarial estimate of the projected costs to repair, replace, or adjust defective component parts under the applicable warranty period and the estimated cost of identified field service actions. These estimates are based on an analysis of actual claims incurred to date and future expectations about the nature, frequency, and cost of future claims by vehicle cohort, which may leverage benchmark data. The Company re-evaluates the adequacy of the warranty reserve on a regular basis and makes revisions when appropriate. Warranty estimates are inherently uncertain, especially given the Company’s limited history of sales, and more historical experience or updates to projections and benchmarks may cause material changes to the warranty reserve in the future.
Cash and Cash Equivalents	Cash and cash equivalents include cash in banks, highly liquid investments, and term deposits with maturities of three months or less recorded in “Cash and cash equivalents” on the Consolidated Balance Sheets.
Short-Term Investments	Short-term investments are available-for-sale debt securities and term deposits with maturities over three months recorded in “Short-term investments” on the Consolidated Balance Sheets.
Inventory and Inventory Valuation	Inventory is stated at the lower of cost or net realizable value (“LCNRV”) and consists of raw materials, work in progress, finished goods, and service parts. The Company primarily calculates the carrying value of inventory using standard cost, which approximates actual cost on the first-in, first-out (“FIFO”) basis. NRV is the estimated selling price of inventory in the ordinary course of business, less estimated costs of completion. The Company assesses the valuation of inventory and periodically adjusts its carrying value for estimated excess and obsolete inventory based upon expectations of future demand and market conditions, as well as damaged or otherwise impaired goods.
Property, Plant and Equipment, Net	Property, plant, and equipment are recorded at cost, net of accumulated depreciation and impairments. Costs of routine maintenance and repair are recognized as expenses when incurred. The Company capitalizes certain qualified costs incurred in connection with the development of software used internally. Costs incurred during the application development stage are evaluated to determine whether the costs meet the criteria for capitalization. Costs related to preliminary project activities and post implementation activities that are not incremental upgrades, including maintenance, are recognized as expenses as incurred. Property, plant, and equipment are primarily depreciated using the straight-line method over the estimated useful life of the asset. Land is not depreciated.
Leases	The Company leases real estate, machinery, equipment, and vehicles under agreements with contractual periods ranging from approximately 1 month to 24 years. Leases generally contain extension or renewal options, and some leases contain termination options. After considering all relevant economic and financial factors, the Company includes periods covered by renewal or extension options that are reasonably certain to be exercised in the lease term and excludes periods covered by termination options that are reasonably certain to be exercised from the lease term. The Company determines whether a contractual arrangement is or contains a lease at inception. The Company has lease agreements with lease and non-lease components and has elected to utilize the practical expedient to account for lease and non-lease components together as a single combined lease component, with the exception of leases of real estate which is comprised of land and buildings. For leases of land and buildings, the Company accounts for each component separately based on the relative estimated standalone price of each component. At lease commencement, the Company measures the lease liability at the present value of lease payments not yet paid. All variable payments that are not based on a market rate or an index (e.g., the Consumer Price Index) are excluded from the measurement of the lease liability and instead are recognized as expense when it becomes probable that the payments will be made. Because the discount rate implicit in the lease is not determinable for most leases, the Company determines the appropriate discount rate using the estimated incremental borrowing rate for the lease based on the information available at lease commencement. Right-of-use assets are measured at the amount of the lease liability, adjusted for prepaid or accrued lease payments, lease incentives, and initial direct costs incurred, as applicable. The Company, the State of Georgia, and the Joint Development Authority of Jasper County, Morgan County, Newton County and Walton County (“JDA”) entered into a development agreement in May 2022 to build the manufacturing facility near the city of Social Circle, Georgia (“Stanton Springs North Facility”). In November 2023, the Company and the JDA entered into a rental agreement, a bond purchase agreement, and an option agreement, pursuant to which the JDA is leasing land to the Company in exchange for the Company making rent payments totaling $309 million over the lease term. The noncancelable lease term is four years, with automatic extensions that are reasonably certain to be utilized. The lease expires in December 2047 unless earlier terminated per the terms of the agreements. The lease is classified as a finance lease as the Company is reasonably certain to exercise a purchase option at expiration. Lease expense for operating leases is comprised of rent expense recognized on a straight-line basis over the lease term and amortization of right-of-use assets recognized as the difference between rent expense and imputed interest on the liability using the effective interest method. Lease expense for finance leases is comprised of interest expense on the liability recognized using the effective interest method and amortization of the right-of-use assets recognized on a straight-line basis over the shorter of the useful life of the asset or the lease term. The Company does not recognize right-of-use assets and lease liabilities for short-term leases with an original lease term of 12 months or less. Instead, expense corresponding to the aggregate rent payments is recognized on a straight-line basis over the lease term.
Unrecognized Tax Benefits	The Company records uncertain tax positions using a two-step process. First, by determining whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position; and second, for those tax positions that meet the more-likely-than-not recognition threshold, by recognizing the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. When applicable, the Company includes interest and penalties related to income tax matters within the provision for income taxes.
Commitments and Contingencies	Loss contingencies arise from claims, assessments, litigation, fines, penalties, and other sources and are recognized as accrued liabilities when management believes that a loss is probable and the amount can be reasonably estimated. Gain contingencies are recognized only when realized. In the event any losses are sustained in excess of accrued liabilities, they are charged against income in the period in which they occur. In evaluating loss contingencies, management takes into consideration factors such as historical experience with matters of a similar nature, specific facts and circumstances, and the likelihood of avoiding the loss. Accrued liabilities for loss contingencies are evaluated and updated as matters progress over time. It is reasonably possible that some of the loss contingencies for which accrued liabilities have not been established could be resolved unfavorably to the Company and could require recognizing future expenditures. Legal costs related to contingencies are recognized as expenses as they are incurred.
Net Loss Per Share	The Company's basic net loss per share is calculated by dividing net loss by the weighted-average number of shares of common stock outstanding for the period, after allocating losses to equity awards deemed to be participating securities pursuant to the two-class method.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2025

The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding annual financial information. The accompanying consolidated financial statements, in the opinion of management, reflect all normal recurring adjustments necessary to fairly present the financial position, results of operations, cash flows, and change in stockholders’ equity for the periods presented. Certain amounts in the prior period consolidated financial statements have been conformed to current period presentation.

Basis of Consolidation

The Company consolidates entities in which it has a controlling financial interest, including Rivian and Volkswagen Group Technologies, LLC and Mind Robotics, Inc. and Mind Robotics, LLC (see Note 19 "Variable Interest Entities” for more information). Intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

Accounting estimates are an integral part of the consolidated financial statements. These estimates require the use of judgments and assumptions that may affect the reported amounts of assets, liabilities, revenues, and expenses in the periods presented. Estimates are used for, but not limited to, warranty reserves, inventory valuation, property, plant, and equipment, leases, income taxes, stock-based compensation, commitments and contingencies, residual value risk sharing (“RVRS”) liability, and other revenue transactions, including progress toward the completion of the Joint Venture’s combined performance obligation. The Company believes that the accounting estimates and related assumptions employed in the consolidated financial statements are appropriate and the resulting balances are reasonable under the circumstances. However, due to the inherent uncertainties involved in making estimates, actual results could differ from the original estimates, requiring adjustments to estimated amounts in future periods.

Account Receivables, Net

Accounts receivable primarily consist of amounts due from customers for the sale of electric vehicles (“EVs”) and from the Volkswagen Group for services provided by the Joint Venture (see Note 4 “Revenues ” for more information), and are reported at the invoiced amount less an allowance for any potential uncollectible amounts.

Derivative Instruments

In the normal course of business, the Company is exposed to global market risks, including the effect of changes in certain commodity prices, interest rates, and foreign currency exchange rates, and may enter into derivative contracts, such as forwards, options, swaps, or other instruments, to manage these risks. Derivative instruments are recorded on the Consolidated Balance Sheets in either “Other current assets” or “Current portion of deferred revenues, lease liabilities, and other liabilities” and are measured at fair value. They are classified within Level 2 of the fair value hierarchy because they are valued using observable inputs other than quoted prices for identical assets or liabilities in active markets.

For commodity contracts, the Company records gains and losses resulting from changes in fair value in “Cost of revenues” in the Consolidated Statements of Operations and cash flows in “Cash flows from operating activities” in the Consolidated Statements of Cash Flows. The Company also may enter into master netting agreements with its counterparties to allow for netting of transactions with the same counterparty. The Company does not utilize derivative instruments for trading or speculative purposes.

The Company has entered into commodity contracts, and the resulting asset, liability, and aggregate notional amounts were not material as of December 31, 2024 and 2025. These derivatives are economic hedges used to manage overall price risk and have not been designated as hedging instruments.

Concentration of Risk

Counterparty Credit Risk

Financial instruments that potentially subject the Company to concentration of counterparty credit risk consist of cash and cash equivalents, short-term investments, accounts receivable, customer deposits, derivative instruments, and debt. The Company is exposed to credit risk on cash to the extent that a balance with a financial institution exceeds the Federal Deposit Insurance Company insurance limits. The Company is exposed to credit risk on cash equivalents and short-term investments to the extent that counterparties are unable to settle maturities or sales of investments. The Company is exposed to credit risk on accounts receivable to the extent that counterparties are unable to pay for the sales transaction and on customer deposits to the extent that counterparties are unable to complete the corresponding purchase transaction. The Company is exposed to credit risk on derivative instruments to the extent that counterparties are unable to settle derivative asset positions and on debt to the extent that the senior secured asset-based revolving credit facility (“ABL Facility”) lenders are not able to extend credit. The degree of counterparty credit risk varies based on many factors, including the duration of the underlying transaction and the contractual terms of the underlying agreement.

As of December 31, 2024 and 2025, all of the Company’s cash, typically in amounts exceeding insured limits, was distributed across several large financial institutions that the Company believes are of high credit quality. Management evaluates and approves credit standards and oversees the credit risk management function related to cash equivalents, short-term investments, accounts receivable, and customer deposits. As of December 31, 2024 and 2025, the counterparties to the Company’s derivative instruments, the ABL Facility lenders (including JP Morgan Chase Bank, N.A. (“Chase Bank”)), and Chase Bank, from which accounts receivable are due to the Company (see Note 4 "Revenues" for more information) are financial institutions that the Company believes are of high credit quality.

Supply Risk

The Company is subject to risks related to its dependence on its suppliers, the majority of which are single-source providers of raw materials or components for the Company’s products. Any inability or unwillingness of the Company’s suppliers to deliver necessary raw materials or product components at timing, prices, quality, and volumes that are acceptable to the Company could have a material impact on the Company’s business, prospects, financial condition, results of operations, and cash flows. Fluctuations in the cost of raw materials or product components and supply interruptions or shortages could materially impact the Company’s business. The imposition of tariffs and other trade barriers may make it more costly to import raw materials and product components and could result in disruptions in supply and production.

Impairment of Long-Lived Assets

Property, plant, equipment, and finite-lived intangible assets are reviewed for impairment whenever events or changes in circumstances occur that indicate that the carrying amount of an asset group may not be fully recoverable. Events that trigger a test for recoverability include material adverse changes in projected revenues and expenses, present cash flow losses combined with a history of cash flow losses or a forecast that demonstrates significant continuing losses, significant negative industry or economic trends, a current expectation that a long-lived asset group will be disposed of significantly before the end of its useful life, a significant adverse change in the manner in which an asset group is used or in its physical condition, or when there is a change in the asset grouping. When an indicator of impairment is present, the Company assesses the risk of impairment based on an estimate of the undiscounted cash flows at the lowest level for which identifiable cash flows exist against the carrying value of the asset group. Impairment exists when the carrying value of the asset group exceeds the estimated future undiscounted cash flows generated by those assets. The Company records an impairment charge for the difference between the carrying value of the asset group and its estimated fair market value. Depending on the asset, estimated fair market value may be determined either by use of a discounted cash flow model or by reference to estimated selling values of assets in similar condition.

Employee Benefit Plan

The Company provides a defined contribution plan for substantially all employees in the United States in which the Company provides discretionary matching contributions.

Research and Development Costs

Research and development (“R&D”) costs consist primarily of personnel expenses for teams in engineering and research including cash incentives and stock-based compensation, prototyping expenses, consulting and contractor expenses, software expenses, data services, including hosting, storage, and compute, and allocation of indirect expenses. R&D costs also include the cost of vehicle electrical architecture and software development services funded by the Company (see Note 1 "Presentation and Nature of Operations", Note 4 "Revenues", and Note 19 "Variable Interest Entities" for more information). Most R&D costs are recognized as expenses as incurred.

Selling, General, and Administrative

Advertising costs are recorded in “Selling, general, and administrative” in the Consolidated Statement of Operations as they are incurred.

Equity Method Investments

The Company applies the equity method of accounting to investments in entities over which the Company has significant influence.

Joint Venture Deferred Compensation Program

In addition to the Company's 2015 Long-Term Incentive Plan ("2015 Stock Plan") and 2021 Incentive Award Plan (“2021 Stock Plan” and, together, “Stock Plans”), which permit the grant of restricted stock units, stock options, and other stock-based awards to Joint Venture employees, non-employees including directors, and consultants (see Note 13 "Stock-Based Compensation" for more information), the Joint Venture provides a deferred compensation program that allows for shares of Volkswagen Group equity and phantom shares, in some cases, to be awarded to its employees, non-employees including directors, and consultants, generally vesting in quarterly installments over 2 years. Unvested shares generally are forfeited upon the termination of a grantee’s service. Forfeitures are recorded as an adjustment to compensation expense in the same period as the forfeitures occur. Compensation expense for the awards is recognized on a straight-line basis over the requisite service period.

In advance of the grant date, shares of Volkswagen Group equity are purchased over the counter by a trust controlled by the Joint Venture and held until vested. Dividends paid are reinvested and are subject to the same vesting requirements as the underlying shares. Upon vesting, ownership of the shares and reinvested dividends is transferred to the grantee. Shares underlying phantom awards are sold upon vesting, and the proceeds are transferred to the grantee. The shares held in trust are accounted for as an investment in equity securities and carried at fair value within “Other current assets” and “Other non-current assets” on the Consolidated Balance Sheets, with unrealized holding gains and losses recorded in “Other income (expense), net” in the Consolidated Statements of Operations. The accrued liability for deferred compensation also is carried at fair value within “Accrued liabilities” on the Consolidated Balance Sheets, with changes in fair value recorded to compensation expense in the Consolidated Statements of Operations. Purchases of shares of Volkswagen Group equity are recorded in “Purchases of equity securities and short-term investments” in the investing section of the Consolidated Statements of Cash Flows.

In April 2025, the trust was formed on behalf of the Joint Venture for the purpose of purchasing and holding shares of Volkswagen Group equity. In May 2025, the trust made the first purchase of shares of Volkswagen Group equity, and the first awards under the deferred compensation program were made. The investment in equity securities and accrued liability for deferred compensation are classified within Level 1 of the fair value hierarchy because they are valued using quoted prices for identical assets or liabilities in active markets and were not material as of December 31, 2025. For the year ended December 31, 2025, unrealized holding gains and losses on the investment in equity securities and deferred compensation expense were not material.

Recently Adopted And Upcoming Accounting Standards Not Yet Adopted

ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures enhances the transparency and usefulness of income tax disclosures. The updates are effective for annual periods beginning after December 15, 2024 on a prospective or retrospective basis, though early adoption is permitted. The presentational impacts of this ASU have been adopted retrospectively for the year ended December 31, 2025 (see Note 12 “Income Taxes” for more information).

ASU 2024-03, Disaggregation of Income Statement Expenses (“DISE”) improves the disclosures of expenses and requires more detailed information about the types of expenses included in commonly presented expense captions. The new standard is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with retrospective application permitted. The Company is currently evaluating the presentational impact of this ASU and expects to adopt its provisions in the Annual Report on Form 10-K for the year ending December 31, 2027.

Revenues

New Electric Vehicles

New EV revenues are primarily derived from the sale of consumer and commercial EVs, as well as related promises that meet the definition of a performance obligation. Revenue from the sale of EVs is recognized at the point in time when control transfers to the customer, which generally occurs upon delivery. The promise to provide over-the-air (“OTA”) vehicle software updates has historically represented a stand ready obligation to provide these services, with revenue related to OTA software updates being recognized ratably throughout the performance period, beginning with control of the vehicle being transferred to the customer and continuing through the estimated useful life of the EV. As a result of enhanced maturity of the vehicle software, during the year ended December 31, 2025, the promise to provide OTA vehicle software updates was determined to be immaterial in the context of the EV sale contract and accordingly, the transaction price is no longer allocated to the promise to provide OTA vehicle software updates.

Revenue from the sale of Electric Delivery Vans (“EDVs”) is recognized in accordance with a bill and hold arrangement, under which revenue is recognized when risk of ownership has been transferred to the customer, but pick-up is delayed at the request of the customer. In such cases, the Company does not have the ability to sell the EDVs to another customer, and they are separately identified as belonging to and ready for pick-up by the customer.

Payment for EV sales is typically received at or prior to delivery or according to payment terms customary to the business. Sales tax is excluded from the measurement of the transaction price.

During the years ended December 31, 2024 and 2025, approximately 37% and 36%, respectively, of the Company’s revenues were from new EV sales to Chase Bank, with Chase Bank entering into leasing arrangements for purchased vehicles. The Company has an obligation to share a portion of the difference between the residual value realized by Chase Bank at the end of the lease term and the residual value determined at lease inception. This obligation is recorded upon delivery of vehicles to Chase Bank as an RVRS liability in “Other non-current liabilities” on the Consolidated Balance Sheets. The RVRS liability is recorded as a reduction to the transaction price and is estimated at the amount the Company is expected to pay to Chase Bank at the end of the lease term. The estimate is based on third-party residual value publications and estimated future prices. While the Company re-evaluates the adequacy of the RVRS liability on a regular basis and makes revisions when necessary, the estimate is inherently uncertain, especially given the limited history of Rivian leases, and more historical experience or updates to benchmarks and projections may cause changes to the RVRS liability in the future. As of December 31, 2024 and 2025 the RVRS liability was not material.

The standalone selling prices of performance obligations are estimated by considering costs to develop and deliver the good or service, third-party pricing of similar goods or services, and other available information. The transaction price is allocated among the performance obligations in proportion to the standalone selling prices.

Regulatory Credits

The Company generates tradable credits from various regulatory standards, including standards related to zero-emission vehicles (“ZEVs”), greenhouse gas, fuel economy, and clean fuel in the United States and Canada. The Company sells regulatory credits to third parties, and revenue is recognized at the point in time that control of the regulatory credits is transferred to the purchasing party. Payment is typically received within one quarter or less of transfer of control of the credits to the customer. As a result of changes to many of the programs governing such tradable credits, the Company‘s ability to continue earning and selling the corresponding credits is uncertain at this time.

Software and Services

Software and services revenues consist primarily of services provided by the Joint Venture to further develop, customize, and enhance Rivian’s vehicle electrical architecture technology and software for use in the customer’s future vehicle programs, sales of vehicle trade-ins (“remarketing”) and vehicle repair and maintenance services.

Remarketing revenue is recognized at a point in time when vehicle title and risk of loss transfer to the customer. Revenues for vehicle repair and maintenance services are recognized over time as services are provided.

The combined performance obligation for the services provided by the Joint Venture is satisfied over time, until the vehicle electrical architecture technology and software promised to the customer is completed. In addition to ongoing payments to fund the Joint Venture’s development services, revenue recognized for the combined performance obligation includes the following consideration transferred by the customer:

•$1,295 million received for a license of intellectual property related to Rivian’s existing vehicle electrical architecture and software technology

•Variable consideration in the form of $250 million received in June 2025 for the achievement of the Financial Milestone (see Note 1 "Presentation and Nature of Operations")

•The $210 million to be received no later than January 3, 2028 as part of the Start of Production Milestone payment (see Note 1 "Presentation and Nature of Operations"), and

•The $201 million in noncash consideration paid by Volkswagen Group in the form of a loan commitment (see Note 10 "Debt").

The majority of the transaction price is included in the Company’s contract liabilities (i.e., deferred revenues) as of December 31, 2025, and the Company expects to recognize the corresponding revenue over approximately 2.5 years, with the amount of revenue to be recognized each period expected to be relatively consistent over time given the Joint Venture’s steady progress toward satisfaction of the combined performance obligation to develop, customize, and enhance Rivian’s existing vehicle electrical architecture technology and software for use in the customer’s future vehicle programs. It is reasonably possible that the Company’s expectations could change over time according to changes in the pattern of progress, and accordingly the pattern of revenue recognized could be adjusted over time and ultimately differ from current expectations. The Company recognized $73 million and $836 million for the years ended December 31, 2024 and 2025, respectively, of revenue for the combined performance obligation with Volkswagen Group, a related party of the Company. As of December 31, 2024 and 2025, the uncollected amounts related to these revenues in “Accounts receivable, net” on the Consolidated Balance Sheets were not material and $328 million, respectively.

Payment for vehicle electrical architecture and software development services is generally due in advance. Payment for remarketing and vehicle repair and maintenance services is typically received when control transfers to the customer or due in accordance with payment terms customary to the business.

Deferred Revenues

The Company recognizes deferred revenues when payments are received or due before the related performance obligation is satisfied. The Company’s deferred revenues are primarily the result of consideration received in advance for the Joint Venture’s combined performance obligation, including ongoing payments to fund the Joint Venture’s development services, which are generally recognized as revenues within 12 months of receipt, as well as payments for EVs collected prior to delivery, generally satisfied as vehicles are delivered, extended vehicle repair and maintenance contracts, satisfied over the coverage period, and OTA vehicle software updates, generally satisfied over the estimated useful life of the EV. The Company’s deferred revenues exclude fully-refundable customer deposits.

Cost of Revenues

Cost of revenues primarily relates to new vehicles and includes direct materials and personnel expenses, including salaries, wages, bonuses, stock-based compensation, benefits, and employment taxes; manufacturing overhead (e.g., depreciation of machinery and tooling); shipping and logistics costs; and reserves, including for estimated warranty costs and adjustments to write down the carrying value of inventory when it exceeds its estimated net realizable value (“NRV”), as well as cost reductions resulting from the generation of refundable manufacturing-related tax credits accounted for as government grants. Cost of revenues for software and services also includes the cost of vehicle electrical architecture and software development services funded by Volkswagen Group (see Note 1 "Presentation and Nature of Operations" and Note 19 "Variable Interest Entities" for more information).

Warranty and Field Service Actions

The Company provides a manufacturer’s warranty on new consumer vehicles. A warranty reserve is recorded at the time of sale and once a specific field service action has been identified. The amount reserved is comprised of an actuarial estimate of the projected costs to repair, replace, or adjust defective component parts under the applicable warranty period and the estimated cost of identified field service actions. These estimates are based on an analysis of actual claims incurred to date and future expectations about the nature, frequency, and cost of future claims by vehicle cohort, which may leverage benchmark data. The Company re-evaluates the adequacy of the warranty reserve on a regular basis and makes revisions when appropriate. Warranty estimates are inherently uncertain, especially given the Company’s limited history of sales, and more historical experience or updates to projections and benchmarks may cause material changes to the warranty reserve in the future.

Cash and Cash Equivalents

Cash and cash equivalents include cash in banks, highly liquid investments, and term deposits with maturities of three months or less recorded in “Cash and cash equivalents” on the Consolidated Balance Sheets.

Short-Term Investments

Short-term investments are available-for-sale debt securities and term deposits with maturities over three months recorded in “Short-term investments” on the Consolidated Balance Sheets.

Inventory and Inventory Valuation

Inventory is stated at the lower of cost or net realizable value (“LCNRV”) and consists of raw materials, work in progress, finished goods, and service parts. The Company primarily calculates the carrying value of inventory using standard cost, which approximates actual cost on the first-in, first-out (“FIFO”) basis. NRV is the estimated selling price of inventory in the ordinary course of business, less estimated costs of completion. The Company assesses the valuation of inventory and periodically adjusts its carrying value for estimated excess and obsolete inventory based upon expectations of future demand and market conditions, as well as damaged or otherwise impaired goods.

Property, Plant and Equipment, Net

Property, plant, and equipment are recorded at cost, net of accumulated depreciation and impairments. Costs of routine maintenance and repair are recognized as expenses when incurred.

The Company capitalizes certain qualified costs incurred in connection with the development of software used internally. Costs incurred during the application development stage are evaluated to determine whether the costs meet the criteria for capitalization. Costs related to preliminary project activities and post implementation activities that are not incremental upgrades, including maintenance, are recognized as expenses as incurred.

Property, plant, and equipment are primarily depreciated using the straight-line method over the estimated useful life of the asset. Land is not depreciated.

Leases

The Company leases real estate, machinery, equipment, and vehicles under agreements with contractual periods ranging from approximately 1 month to 24 years. Leases generally contain extension or renewal options, and some leases contain termination options. After considering all relevant economic and financial factors, the Company includes periods covered by renewal or extension options that are reasonably certain to be exercised in the lease term and excludes periods covered by termination options that are reasonably certain to be exercised from the lease term. The Company determines whether a contractual arrangement is or contains a lease at inception.

The Company has lease agreements with lease and non-lease components and has elected to utilize the practical expedient to account for lease and non-lease components together as a single combined lease component, with the exception of leases of real estate which is comprised of land and buildings. For leases of land and buildings, the Company accounts for each component separately based on the relative estimated standalone price of each component. At lease commencement, the Company measures the lease liability at the present value of lease payments not yet paid. All variable payments that are not based on a market rate or an index (e.g., the Consumer Price Index) are excluded from the measurement of the lease liability and instead are recognized as expense when it becomes probable that the payments will be made. Because the discount rate implicit in the lease is not determinable for most leases, the Company determines the appropriate discount rate using the estimated incremental borrowing rate for the lease based on the information available at lease commencement. Right-of-use assets are measured at the amount of the lease liability, adjusted for prepaid or accrued lease payments, lease incentives, and initial direct costs incurred, as applicable.

The Company, the State of Georgia, and the Joint Development Authority of Jasper County, Morgan County, Newton County and Walton County (“JDA”) entered into a development agreement in May 2022 to build the manufacturing facility near the city of Social Circle, Georgia (“Stanton Springs North Facility”). In November 2023, the Company and the JDA entered into a rental agreement, a bond purchase agreement, and an option agreement, pursuant to which the JDA is leasing land to the Company in exchange for the Company making rent payments totaling $309 million over the lease term. The noncancelable lease term is four years, with automatic extensions that are reasonably certain to be utilized. The lease expires in December 2047 unless earlier terminated per the terms of the agreements. The lease is classified as a finance lease as the Company is reasonably certain to exercise a purchase option at expiration.

Lease expense for operating leases is comprised of rent expense recognized on a straight-line basis over the lease term and amortization of right-of-use assets recognized as the difference between rent expense and imputed interest on the liability using the effective interest method. Lease expense for finance leases is comprised of interest expense on the liability recognized using the effective interest method and amortization of the right-of-use assets recognized on a straight-line basis over the shorter of the useful life of the asset or the lease term. The Company does not recognize right-of-use assets and lease liabilities for short-term leases with an original lease term of 12 months or less. Instead, expense corresponding to the aggregate rent payments is recognized on a straight-line basis over the lease term.

Unrecognized Tax Benefits

The Company records uncertain tax positions using a two-step process. First, by determining whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position; and second, for those tax positions that meet the more-likely-than-not recognition threshold, by recognizing the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. When applicable, the Company includes interest and penalties related to income tax matters within the provision for income taxes.

Commitments and Contingencies

Loss contingencies arise from claims, assessments, litigation, fines, penalties, and other sources and are recognized as accrued liabilities when management believes that a loss is probable and the amount can be reasonably estimated. Gain contingencies are recognized only when realized. In the event any losses are sustained in excess of accrued liabilities, they are charged against income in the period in which they occur. In evaluating loss contingencies, management takes into consideration factors such as historical experience with matters of a similar nature, specific facts and circumstances, and the likelihood of avoiding the loss. Accrued liabilities for loss contingencies are evaluated and updated as matters progress over time. It is reasonably possible that some of the loss contingencies for which accrued liabilities have not been established could be resolved unfavorably to the Company and could require recognizing future expenditures. Legal costs related to contingencies are recognized as expenses as they are incurred.

Net Loss Per Share

The Company's basic net loss per share is calculated by dividing net loss by the weighted-average number of shares of common stock outstanding for the period, after allocating losses to equity awards deemed to be participating securities pursuant to the two-class method.