SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]
Subsidiaries	Subsidiaries— The condensed consolidated financial statements of Katapult include the accounts of the Company and its wholly owned subsidiaries Katapult Intermediate Holdings LLC (formerly known as Keys Merger Sub 2, LLC), a Delaware limited liability company formed in December 2020, Katapult Group, Inc. (formerly known as Cognical, Inc.), a Delaware corporation incorporated in March 2012, Katapult SPV-1 LLC, a Delaware limited liability company formed in 2019, and Katapult SPV-2 LLC, a Delaware limited liability company formed in 2025. Legacy Katapult was incorporated in the state of Delaware in 2016. Katapult Group originates all of the Company's lease agreements with customers. The condensed consolidated financial statements include the accounts of Katapult Holdings, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, of a normal recurring nature, considered necessary for a fair presentation have been included in these condensed consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation.
Basis of Presentation	Basis of Presentation— The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”).
Use of Estimates	Use of Estimates— The preparation of the condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of income and expense during the reporting periods. The most significant estimates relate to property held for lease and the related depreciation method, impairments, the fair value of our derivative liability, and the valuation allowance associated with deferred tax assets. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other risk-based factors. Changes in estimates are reflected in reported amounts in the period in which they become known. Actual results could differ from those estimates.
Rental Revenue	Rental Revenue— Lease-purchase agreements, which comprise the majority of total revenue, fall within the scope of ASC 842, Leases under lessor accounting and revenue is recognized in the period it is earned and cash is collected. Property held for lease is leased to customers pursuant to lease-purchase agreements with an initial term: typically one week, two weeks, or one month, with non-refundable lease payments. Generally, the customer has the right to acquire title either through a 90-day promotional pricing option, an early lease-purchase option (buyout), or by completing all lease renewal payments, generally over 12 or 18 months. On any current lease, customers have the option to terminate the agreement at any time without penalty in accordance with the lease term. Amounts received from customers who elect early lease-purchase options (buyouts) are included in rental revenue. Lease payments received prior to their due dates are deferred and recorded as unearned revenue and are recognized as rental revenue in the period in which the revenue is earned. Services are considered to be rendered and revenue earned over the lease term. Rental revenue also includes an initial agreed-upon amount for executing customer lease-purchase agreements. Payments are received upon submission of the applications and execution of the lease-purchase agreements. Revenues from leases that originated from merchants are generally recorded net of sales taxes as sales tax is collected from each customer's lease payment and a sales tax payable is recorded for remittance to the respective state. Revenue is recognized for leases in the period it is earned and cash is collected. For Katapult Pay transactions, all sales tax is paid by the Company upon purchase of the goods and is typically recorded in the cost basis of the capitalized property held for lease.
Property Held for Lease, Net of Accumulated Depreciation and Impairment	Property Held for Lease, Net of Accumulated Depreciation and Impairment— Property held for lease consists of furniture, mattresses, customer electronics, appliances, and other durable goods offered for lease-purchase in the normal course of business. Such property is provided to customers pursuant to a lease-purchase agreement with a minimum lease term; typically one week, two weeks, or one month. The renewal periods of the initial lease term of the agreement are typically 12 or 18 months. Customers may terminate a lease agreement at any time without penalty. The average customer continues to lease the property for approximately 8 months because the customer either exercises the early lease-purchase option (buyout) or terminates the lease-purchase agreement prior to the end of the 12 or 18 month renewal periods. As a result, property held for lease is classified as a current asset on the condensed consolidated balance sheets. Property held for lease is recorded at cost, excluding shipping costs, and is carried at net book value. Depreciation for property held for lease is determined using the income forecasting method and is included within cost of revenue. The Company’s income forecasting method evaluates the patterns of the Company’s historical property held for lease portfolio to apply depreciation rates to the Company’s current property held for lease portfolio. Property held for lease is depreciated in the proportion of expected rents received to total expected rents to be received based on the Company’s historical data of lease performance. The utilization of rental merchandise occurs during periods of rental and coincides with the pattern of rental revenue receipts over the rental purchase agreement period. The Company also considers other qualitative factors, such as current and forecasted customer payment trends, and other risk-based factors as a component of its forecasting methodology. The Company provides for impairment for the undepreciated balance of the property held for lease assuming no salvage value with a corresponding charge to cost of revenue. The provision for write-offs represents estimated losses based on historical results, which are incurred but not yet identified. Actual write-offs may differ from this estimate. The Company applies its depreciation to property held for lease as follows: (1) typical depreciation based on historical patterns of customer payments when an item is leased for the full lease duration; (2) accelerated depreciation for impaired leases, based on historical patterns of lease impairment, and (3) accelerated depreciation for leases where an early purchase option (buyout) is exercised, based on historical patterns of lease buyouts. The Company accelerates depreciation equal to the undepreciated net book value of property buyouts as buyouts occur with a corresponding charge to cost of revenue based on historical trends, such that the recorded amount closely approximates current actual buyouts during the period. The Company periodically evaluates fully depreciated property held for lease, net and when it is determined there is no future economic benefit, the cost of the assets are written off and the related accumulated depreciation is reversed. There are uncertainties involved when recognizing expenses related to property held for lease due to the subjective nature of the income forecasting method and depreciation method, which could vary from actual results.
Other Revenue	Other Revenue— Other revenue consists primarily of the sale of property held for lease (and lease agreements) to third parties and other immaterial sources of income from third party relationships. The sale of property held for lease is considered recurring and ordinary in nature to the Company’s business, and as such, these sales are accounted for within the scope of ASC 606, Revenue from Contracts with Customers. The payment terms require a fixed amount paid upfront by the third-party buyer based on a negotiated percentage of the collectible value of the unpaid balance of the delinquent leases being sold and is not subject to future adjustments or recourse provisions. Revenue from such sales is recognized at the point in time when control of the remaining unpaid delinquent lease balances and lease agreements are transferred to the third party buyer, which occurs upon execution of the sale agreement and receipt of consideration.
Concentrations of Credit Risk	Concentration of Credit Risk— The Company’s concentration of credit risk consists primarily of cash. A portion of the Company’s cash balances exceed those that are federally insured. To date, the Company has not recognized any losses caused by uninsured balances.
Recent Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Not Yet Adopted— In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU will improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. This update is effective for public entities for annual periods beginning after December 15, 2024 with early adoption permitted for annual financial statements that have not yet been issued or made available for issuance. The Company is evaluating the impact of this ASU. In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date, which clarifies the date of adoption for ASU 2024-03. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is evaluating the impact of adopting ASU 2024-03.
Fair Value Measurements	The Company’s financial instruments consist of cash, accounts payable, accrued expenses, new term loan derivative liability, warrant liability, the New Revolving Facility, and the New Term Loan. The Company believes that the carrying amounts of its financial instruments including cash, accounts payable and accrued expenses approximate their fair values due to the short-time maturities of these instruments. The condensed consolidated financial statements also include level 3 fair value measurements of private common stock warrants and the new term loan derivative liability. The Company uses a third-party valuation firm to determine the fair value of certain of the Company's financial instruments.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2025

Subsidiaries— The condensed consolidated financial statements of Katapult include the accounts of the Company and its wholly owned subsidiaries Katapult Intermediate Holdings LLC (formerly known as Keys Merger Sub 2, LLC), a Delaware limited liability company formed in December 2020, Katapult Group, Inc. (formerly known as Cognical, Inc.), a Delaware corporation incorporated in March 2012, Katapult SPV-1 LLC, a Delaware limited liability company formed in 2019, and Katapult SPV-2 LLC, a Delaware limited liability company formed in 2025. Legacy Katapult was incorporated in the state of Delaware in 2016. Katapult Group originates all of the Company's lease agreements with customers.

The condensed consolidated financial statements include the accounts of Katapult Holdings, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, of a normal recurring nature, considered necessary for a fair presentation have been included in these condensed consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation.

Basis of Presentation

Basis of Presentation— The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”).

Use of Estimates

Use of Estimates— The preparation of the condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of income and expense during the reporting periods. The most significant estimates relate to property held for lease and the related depreciation method, impairments, the fair value of our derivative liability, and the valuation allowance associated with deferred tax assets. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other risk-based factors. Changes in estimates are reflected in reported amounts in the period in which they become known. Actual results could differ from those estimates.

Rental Revenue

Rental Revenue— Lease-purchase agreements, which comprise the majority of total revenue, fall within the scope of ASC 842, Leases under lessor accounting and revenue is recognized in the period it is earned and cash is collected. Property held for lease is leased to customers pursuant to lease-purchase agreements with an initial term: typically one week, two weeks, or one month, with non-refundable lease payments. Generally, the customer has the right to acquire title either through a 90-day promotional pricing option, an early lease-purchase option (buyout), or by completing all lease renewal payments, generally over 12 or 18 months. On any current lease, customers have the option to terminate the agreement at any time without penalty in accordance with the lease term. Amounts received from customers who elect early lease-purchase options (buyouts) are included in rental revenue. Lease payments received prior to their due dates are deferred and recorded as unearned revenue and are recognized as rental revenue in the period in which the revenue is earned. Services are considered to be rendered and revenue earned over the lease term. Rental revenue also includes an initial agreed-upon amount for executing customer lease-purchase agreements. Payments are received upon submission of the applications and execution of the lease-purchase agreements.

Revenues from leases that originated from merchants are generally recorded net of sales taxes as sales tax is collected from each customer's lease payment and a sales tax payable is recorded for remittance to the respective state. Revenue is recognized for leases in the period it is earned and cash is collected. For Katapult Pay transactions, all sales tax is paid by the Company upon purchase of the goods and is typically recorded in the cost basis of the capitalized property held for lease.

Property Held for Lease, Net of Accumulated Depreciation and Impairment

Property Held for Lease, Net of Accumulated Depreciation and Impairment— Property held for lease consists of furniture, mattresses, customer electronics, appliances, and other durable goods offered for lease-purchase in the normal course of business. Such property is provided to customers pursuant to a lease-purchase agreement with a minimum lease term; typically one week, two weeks, or one month. The renewal periods of the initial lease term of the agreement are typically 12 or 18 months. Customers may terminate a lease agreement at any time without penalty. The average customer continues to lease the property for approximately 8 months because the customer either exercises the early lease-purchase option (buyout) or terminates the lease-purchase agreement prior to the end of the 12 or 18 month renewal periods. As a result, property held for lease is classified as a current asset on the condensed consolidated balance sheets.

Property held for lease is recorded at cost, excluding shipping costs, and is carried at net book value. Depreciation for property held for lease is determined using the income forecasting method and is included within cost of revenue. The Company’s income forecasting method evaluates the patterns of the Company’s historical property held for lease portfolio to apply depreciation rates to the Company’s current property held for lease portfolio. Property held for lease is depreciated in the proportion of expected rents received to total expected rents to be received based on the Company’s historical data of lease performance. The utilization of rental merchandise occurs during periods of rental and coincides with the pattern of rental revenue receipts over the rental purchase agreement period. The Company also considers other qualitative factors, such as current and forecasted customer payment trends, and other risk-based factors as a component of its forecasting methodology.

The Company provides for impairment for the undepreciated balance of the property held for lease assuming no salvage value with a corresponding charge to cost of revenue. The provision for write-offs represents estimated losses based on historical results, which are incurred but not yet identified. Actual write-offs may differ from this estimate.

The Company applies its depreciation to property held for lease as follows: (1) typical depreciation based on historical patterns of customer payments when an item is leased for the full lease duration; (2) accelerated depreciation for impaired leases, based on historical patterns of lease impairment, and (3) accelerated depreciation for leases where an early purchase option (buyout) is exercised, based on historical patterns of lease buyouts.

The Company accelerates depreciation equal to the undepreciated net book value of property buyouts as buyouts occur with a corresponding charge to cost of revenue based on historical trends, such that the recorded amount closely approximates current actual buyouts during the period. The Company periodically evaluates fully depreciated property held for lease, net and when it is determined there is no future economic benefit, the cost of the assets are written off and the related accumulated depreciation is reversed.

There are uncertainties involved when recognizing expenses related to property held for lease due to the subjective nature of the income forecasting method and depreciation method, which could vary from actual results.

Other Revenue

Other Revenue— Other revenue consists primarily of the sale of property held for lease (and lease agreements) to third parties and other immaterial sources of income from third party relationships. The sale of property held for lease is considered recurring and ordinary in nature to the Company’s business, and as such, these sales are accounted for within the scope of ASC 606, Revenue from Contracts with Customers. The payment terms require a fixed amount paid upfront by the third-party buyer based on a negotiated percentage of the collectible value of the unpaid balance of the delinquent leases being sold and is not subject to future adjustments or recourse provisions. Revenue from such sales is recognized at the point in time when control of the remaining unpaid delinquent lease balances and lease agreements are transferred to the third party buyer, which occurs upon execution of the sale agreement and receipt of consideration.

Concentrations of Credit Risk

Concentration of Credit Risk— The Company’s concentration of credit risk consists primarily of cash. A portion of the Company’s cash balances exceed those that are federally insured. To date, the Company has not recognized any losses caused by uninsured balances.

Recent Accounting Pronouncements Not Yet Adopted

Recent Accounting Pronouncements Not Yet Adopted— In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU will improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. This update is effective for public entities for annual periods beginning after December 15, 2024 with early adoption permitted for annual financial statements that have not yet been issued or made available for issuance. The Company is evaluating the impact of this ASU.

In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date, which clarifies the date of adoption for ASU 2024-03. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is evaluating the impact of adopting ASU 2024-03.

Fair Value Measurements

The Company’s financial instruments consist of cash, accounts payable, accrued expenses, new term loan derivative liability, warrant liability, the New Revolving Facility, and the New Term Loan. The Company believes that the carrying amounts of its financial instruments including cash, accounts payable and accrued expenses approximate their fair values due to the short-time maturities of these instruments. The condensed consolidated financial statements also include level 3 fair value measurements of private common stock warrants and the new term loan derivative liability. The Company uses a third-party valuation firm to determine the fair value of certain of the Company's financial instruments.