Summary of Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying Condensed Consolidated Financial Statements have been prepared in accordance with U.S. GAAP and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting on Form 10-Q. Accordingly, certain information and disclosures required for complete financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These Condensed Consolidated Financial Statements and notes should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2021 (as filed with the SEC on March 9, 2022). Since the date of that filing, there have been no changes or updates to the Company's significant accounting policies, other than those described below. In the opinion of management, the accompanying Condensed Consolidated Financial Statements contain all normal recurring adjustments necessary for a fair statement of financial position, results of operations, comprehensive loss, and cash flows as of the dates and for the interim periods presented. The results of operations for the three and six months ended June 30, 2022 may not be indicative of the results for the full fiscal year ended December 31, 2022 or any other period. The Condensed Consolidated Balance Sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date, but does not include all disclosures required by U.S. GAAP on an annual reporting basis. Certain prior period amounts have been reclassified to conform to the current period presentation. The Company's fiscal year is the twelve-month period from January 1 through December 31 and all references to "2022", “2021”, and “2020” refer to the fiscal year unless otherwise noted.
Principles of Consolidation	Principles of Consolidation The Condensed Consolidated Financial Statements include the accounts of BTRS Holdings Inc. and its wholly owned subsidiaries. All intercompany transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities reported, disclosure about contingent liabilities, and the reported amounts of revenues and expenses in the financial statements and accompanying notes. Such estimates include, but are not limited to, revenue recognition, leases, valuation of goodwill, intangible assets, other long-lived assets, and other assets and liabilities from acquisitions, recoverability of deferred tax assets, ongoing impairment reviews of goodwill, intangible assets, and other long-lived assets, contingent consideration, and stock-based compensation. The Company bases its estimates on historical experience, known trends, market specific information, or other relevant factors it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates and changes in estimates are recorded in the period in which they become known. Actual results may differ from these estimates.
Foreign Currency	Foreign Currency The functional currency of the Company’s subsidiaries is their respective local currencies. These subsidiary financial statements are translated to U.S. dollars using the period-end exchange rates for assets and liabilities, average exchange rates during the corresponding period for revenues and expenses, and historical rates for equity. The effects of foreign currency translation adjustments are recorded in accumulated other comprehensive income (loss) within stockholders’ equity on the Condensed Consolidated Balance Sheets. Foreign currency transaction gains (losses) are included in other non-operating income (expense) on the Condensed Consolidated Statements of Operations.
Concentrations of Credit Risk	Concentrations of Credit Risk The financial instruments that potentially subject the Company to concentrations of credit risk are cash, cash equivalents, restricted cash, accounts receivable, and customer funds. The Company maintains its deposits of cash and cash equivalents, restricted cash, and customer funds with high-credit quality financial institutions. The Company’s cash and cash equivalents, restricted cash, and customer funds may exceed federally insured limits. The Company’s accounts receivable are reported on the Condensed Consolidated Balance Sheets net of allowances for uncollectible accounts. The Company believes that the concentration of credit risk with respect to accounts receivable is limited due to the large number of companies and diverse industries comprising its customer base. Ongoing credit evaluations are performed, with a focus on new customers or customers with whom the Company has no prior collections history, and collateral is generally not required. The Company maintains reserves for potential losses based on customer specific situations, historical experience, and expectations of forward-looking loss estimates. Such losses, in the aggregate, have not exceeded management’s expectations. As of June 30, 2022 and December 31, 2021, the allowances for uncollectible accounts were $0.3 million and $0.4 million, respectively. For the six months ended June 30, 2022 and 2021, no individual customer accounted for 10% or greater of total revenues. As of June 30, 2022 and December 31, 2021, no individual customer had a balance of 10% or greater of accounts receivable.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Pronouncements Issued and Adopted On January 1, 2022, the Company adopted ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40). The amendments in this ASU simplify the accounting for convertible instruments by eliminating large sections of the existing guidance and eliminating several triggers for derivative accounting, including a requirement to settle certain contracts by delivering registered shares. The adoption of this standard did not have an impact on the Company's financial position or results of operations. Accounting Pronouncements Issued but not yet Adopted In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832), Disclosures by Business Entities about Government Assistance. The amendments in this ASU require entities to annually disclose information about certain government assistance they receive. The rule will be effective for public entities for annual periods beginning after December 15, 2021. The adoption of ASU is currently not expected to have a material impact on the Company’s financial statement disclosures.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2022

The accompanying Condensed Consolidated Financial Statements have been prepared in accordance with U.S. GAAP and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting on Form 10-Q. Accordingly, certain information and disclosures required for complete financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant

to such rules and regulations. These Condensed Consolidated Financial Statements and notes should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2021 (as filed with the SEC on March 9, 2022). Since the date of that filing, there have been no changes or updates to the Company's significant accounting policies, other than those described below.

In the opinion of management, the accompanying Condensed Consolidated Financial Statements contain all normal recurring adjustments necessary for a fair statement of financial position, results of operations, comprehensive loss, and cash flows as of the dates and for the interim periods presented. The results of operations for the three and six months ended June 30, 2022 may not be indicative of the results for the full fiscal year ended December 31, 2022 or any other period. The Condensed Consolidated Balance Sheet as of December 31, 2021 included herein was derived from the audited financial statements as of that date, but does not include all disclosures required by U.S. GAAP on an annual reporting basis. Certain prior period amounts have been reclassified to conform to the current period presentation.

The Company's fiscal year is the twelve-month period from January 1 through December 31 and all references to "2022", “2021”, and “2020” refer to the fiscal year unless otherwise noted.

Principles of Consolidation

The Condensed Consolidated Financial Statements include the accounts of BTRS Holdings Inc. and its wholly owned subsidiaries. All intercompany transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities reported, disclosure about contingent liabilities, and the reported amounts of revenues and expenses in the financial statements and accompanying notes. Such estimates include, but are not limited to, revenue recognition, leases, valuation of goodwill, intangible assets, other long-lived assets, and other assets and liabilities from acquisitions, recoverability of deferred tax assets, ongoing impairment reviews of goodwill, intangible assets, and other long-lived assets, contingent consideration, and stock-based compensation. The Company bases its estimates on historical experience, known trends, market specific information, or other relevant factors it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates and changes in estimates are recorded in the period in which they become known. Actual results may differ from these estimates.

Foreign Currency

The functional currency of the Company’s subsidiaries is their respective local currencies. These subsidiary financial statements are translated to U.S. dollars using the period-end exchange rates for assets and liabilities, average exchange rates during the corresponding period for revenues and expenses, and historical rates for equity. The effects of foreign currency translation adjustments are recorded in accumulated other comprehensive income (loss) within stockholders’ equity on the Condensed Consolidated Balance Sheets.

Foreign currency transaction gains (losses) are included in other non-operating income (expense) on the Condensed Consolidated Statements of Operations.

Concentrations of Credit Risk

The financial instruments that potentially subject the Company to concentrations of credit risk are cash, cash equivalents, restricted cash, accounts receivable, and customer funds. The Company maintains its deposits of cash and cash equivalents, restricted cash, and customer funds with high-credit quality financial institutions. The Company’s cash and cash equivalents, restricted cash, and customer funds may exceed federally insured limits.

The Company’s accounts receivable are reported on the Condensed Consolidated Balance Sheets net of allowances for uncollectible accounts. The Company believes that the concentration of credit risk with respect to accounts receivable is limited due to the large number of companies and diverse industries comprising its

customer base. Ongoing credit evaluations are performed, with a focus on new customers or customers with whom the Company has no prior collections history, and collateral is generally not required. The Company maintains reserves for potential losses based on customer specific situations, historical experience, and expectations of forward-looking loss estimates. Such losses, in the aggregate, have not exceeded management’s expectations. As of June 30, 2022 and December 31, 2021, the allowances for uncollectible accounts were $0.3 million and $0.4 million, respectively.

For the six months ended June 30, 2022 and 2021, no individual customer accounted for 10% or greater of total revenues. As of June 30, 2022 and December 31, 2021, no individual customer had a balance of 10% or greater of accounts receivable.

Recent Accounting Pronouncements

Accounting Pronouncements Issued and Adopted

On January 1, 2022, the Company adopted ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40). The amendments in this ASU simplify the accounting for convertible instruments by eliminating large sections of the existing guidance and eliminating several triggers for derivative accounting, including a requirement to settle certain contracts by delivering registered shares. The adoption of this standard did not have an impact on the Company's financial position or results of operations.

Accounting Pronouncements Issued but not yet Adopted

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832), Disclosures by Business Entities about Government Assistance. The amendments in this ASU require entities to annually disclose information about certain government assistance they receive. The rule will be effective for public entities for annual periods beginning after December 15, 2021. The adoption of ASU is currently not expected to have a material impact on the Company’s financial statement disclosures.