DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	12 Months Ended
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Description of Business – Expensify, Inc. (Expensify or the Company), was incorporated in Delaware on April 29, 2009. Expensify offers a comprehensive expense management platform that integrates with a variety of third-party accounting applications, including QuickBooks Desktop, QuickBooks Online, Xero, NetSuite, Intacct, Sage, Microsoft Dynamics, MYOB and others. Expensify's product simplifies the way that employees and vendors manage and submit expense receipts and bills and provides efficiencies to companies for the payment of those bills. Expensify delivers its services over the internet to corporations and individuals under a license arrangement and offers unique pricing options for small and midsized businesses (SMB) and enterprises on a per-active-member basis. Expensify's customers are worldwide but primarily in the United States (U.S.). In early 2020, Expensify launched the Expensify credit card (the Expensify Card). Expensify primarily distributes the Expensify Card to large corporate customers in the U.S. that subsequently distribute the card to their employees for business use. The Expensify Card allows customers to have real-time control over their employees' spending and compliance with spending limits in addition to eReceipt reporting on purchases made. Information regarding the subsidiaries of Expensify are as follows: •Expensify established a wholly-owned subsidiary in the United Kingdom (UK), Expensify LTD., in 2015 that primarily serves to promote and market Expensify's services to customers and potential customers of Expensify in the UK. •Expensify established a wholly-owned subsidiary in Australia, Expensify PTY LTD., in 2017 that primarily serves to promote and market Expensify's services to customers and potential customers of Expensify in Australia. •Expensify established a wholly-owned subsidiary, 401 SW 5th Ave LLC, in 2019 with the subsidiary’s primary purpose being to hold title to the commercial building purchased in Portland, Oregon. •Expensify established a wholly-owned subsidiary, Expensify.org, in 2019 which is a nonprofit benefit organization. Expensify.org is included within the consolidated financial statements of Expensify as Expensify has both a majority voting interest in the board of Expensify.org and an economic interest in the organization. In early 2020 with the introduction of the Expensify Card, Expensify committed to donate 10% of its consideration received from a vendor for monetizing Expensify Card activities to Expensify.org in addition to lump sum discretionary contributions. Beginning in January 2021, an additional commitment was made to donate 25 cents for every dollar Expensify paid to white male Expensify employees to Expensify.org to fund social justice and equity efforts. For the years ended December 31, 2021 and 2020, Expensify, Inc. contributed $3.1 million and $0.1 million to Expensify.org, respectively. $0.3 million in commitments from Expensify, Inc. remain open for contribution as of December 31, 2021. An immaterial amount in commitments from Expensify, Inc. remained open for contribution as of December 31, 2020. All intercompany transactions and balances have been eliminated in consolidation. Any contributions from Expensify.org to a charitable organization is recorded as an expense within General and administrative expenses on the consolidated financial statements upon payment. Contributions from Expensify.org to a charitable organization were immaterial during the years ended December 31, 2021, 2020 and 2019, respectively. •Expensify established wholly-owned subsidiaries, Expensify Canada Inc. and Expensify Netherlands B.V., in 2020 that primarily serve to promote and market Expensify's services to customers and potential customers of the Company in Canada and the Netherlands, respectively. •Expensify established a wholly-owned subsidiary, Expensify Payments LLC, in 2020 that primarily serves as the licensed provider of money transmission services for Expensify with its expense management program. •Expensify established a wholly-owned subsidiary, Expensify Lounge LLC, in 2021 that primarily serves to manage, promote and market Expensify's lounge operations in the United States. Initial Public Offering – The Company’s registration statement on Form S-1 (the IPO Registration Statement) related to its initial public offering (IPO) was declared effective on November 9, 2021 and the Company’s Class A common stock began trading on the Nasdaq Global Select Market on November 10, 2021. On November 15, 2021, the Company closed its IPO of 11,190,392 shares of the Company's Class A common stock at $0.0001 par value per share (the Class A common stock), in which the Company sold 2,608,696 shares of Class A common stock, and the selling stockholders sold 8,581,696 shares of Class A common stock at an IPO price of $27.00 per share. This total sale of 11,190,392 shares of Class A common stock in the IPO includes the full exercise of the underwriters’ option to purchase an additional 1,459,616 shares of Class A common stock from certain selling stockholders at an IPO price of $27.00 per share. The Company did not receive any proceeds from the sale of shares of Class A Common Stock in the offering by the selling stockholders. The Company received aggregate net proceeds of approximately $57.5 million after deducting underwriting discounts and commissions of approximately $4.9 million and offering costs of approximately $8.0 million. Immediately prior to the effectiveness of the IPO Registration Statement, the Company filed an Amendment to the Amended and Restated Certificate of Incorporation to create three classes of authorized common stock: Class A, LT10, and LT50 common stock. All shares of common stock then outstanding were reclassified as Class A common stock except for shares under the Company's exchange offer, which provided employees and other service providers the opportunity to exchange, on a one-for-one basis, their Class A common stock into LT10 or LT50 shares. Under this exchange offer, 13,556,800 shares of Class A common stock were exchanged for 7,332,640 shares of LT10 common stock and 6,224,160 shares of LT50 common stock. Upon closing of the IPO, all convertible preferred stock then outstanding, was converted into 42,031,390 shares of common stock on a ten-for-one basis and reclassified into Class A common stock. In addition, 430,080 shares of common stock warrants were converted to an equivalent number of shares of Class A common stock warrants. Immediately prior to the closing of the IPO, the Company filed its Amended and Restated Certificate of Incorporation authorizing a total of 1,000,000,000 shares of Class A common stock which entitles holders to one vote per share; 25,000,000 shares of LT10 common stock, which entitles holders to 10 votes per share; and 25,000,000 shares of LT50 common stock, which entitles holders to 50 votes per share. In addition, the Amended and Restated Certificate of Incorporation authorized a total of 10,000,000 shares of undesignated preferred stock. Basis of Presentation and Principles of Consolidation – The accompanying consolidated financial statements include the accounts of Expensify and its wholly-owned subsidiaries (the Company) and have been prepared in accordance with generally accepted accounting principles in the United States (U.S. GAAP). All intercompany transactions and balances have been eliminated in consolidation. Stock Split – On October 27, 2021, the Company effected a ten-for-one stock split of its common stock. All share and per share information has been retroactively adjusted to reflect the stock split for all periods presented.