Organization and Operations	3 Months Ended
Organization and Operations	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Operations	ORGANIZATION AND OPERATIONS i3 Verticals, Inc. (the “Company”) was formed as a Delaware corporation on January 17, 2018. The Company was formed for the purpose of completing an initial public offering (“IPO”) of its Class A common stock and other related transactions in order to carry on the business of i3 Verticals, LLC and its subsidiaries. i3 Verticals, LLC was founded in 2012 and delivers seamlessly integrated payment and software solutions to small- and medium-sized businesses (“SMBs”) and organizations in strategic vertical markets. The Company’s headquarters are located in Nashville, Tennessee, with operations throughout the United States. Unless the context otherwise requires, references to “we,” “us,” “our,” “i3 Verticals” and the “Company” refer to i3 Verticals, Inc. and its subsidiaries, including i3 Verticals, LLC. Reorganization Transactions In connection with the IPO, the Company completed the following transactions (the “Reorganization Transactions”): •i3 Verticals, LLC amended and restated its existing limited liability company agreement to, among other things, (1) convert all existing Class A units, common units (including common units issued upon the exercise of existing warrants) and Class P units of ownership interest in i3 Verticals, LLC into either Class A voting common units of i3 Verticals, LLC (such holders of Class A voting common units referred to herein as the “Continuing Equity Owners”) or Class B non-voting common units of i3 Verticals, LLC (such holders of Class B non-voting common units referred to herein as the “Former Equity Owners”), and (2) appoint i3 Verticals, Inc. as the sole managing member of i3 Verticals, LLC upon its acquisition of Common Units in connection with the IPO; •the Company amended and restated its certificate of incorporation to provide for, among other things, Class A common stock and Class B common stock; •i3 Verticals, LLC and the Company consummated a merger among i3 Verticals, LLC, i3 Verticals, Inc. and a newly formed wholly-owned subsidiary of i3 Verticals, Inc. (“MergerSub”) whereby: (1) MergerSub merged with and into i3 Verticals, LLC, with i3 Verticals, LLC as the surviving entity; (2) Class A voting common units converted into newly issued Common Units in i3 Verticals, LLC together with an equal number of shares of Class B common stock of i3 Verticals, Inc., and (3) Class B non-voting common units converted into Class A common stock of i3 Verticals, Inc. based on a conversion ratio that provided an equitable adjustment to reflect the full value of the Class B non-voting common units; and •the Company issued shares of its Class A common stock pursuant to a voluntary private conversion of certain subordinated notes by certain related and unrelated creditors of i3 Verticals, LLC. Following the completion of the IPO and Reorganization Transactions, the Company became a holding company and the principal asset that it owns are the Common Units in i3 Verticals, LLC. i3 Verticals, Inc. operates and controls all of i3 Verticals, LLC's operations and, through i3 Verticals, LLC and its subsidiaries, conducts i3 Verticals, LLC's business. i3 Verticals, Inc. has a majority economic interest in i3 Verticals, LLC. i3 Verticals, Inc. is the sole managing member of i3 Verticals, LLC and as a result, consolidates the financial results of i3 Verticals, LLC and reports a non-controlling interest representing the Common Units of i3 Verticals, LLC held by the Continuing Equity Owners.