Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

i3 Verticals, Inc.

Nashville, Tennessee

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-225812 and No. 333-229678) and Form S-3 (No. 333-233126) of i3 Verticals, Inc. of our report dated November 22, 2019, relating to the consolidated financial statements, which appears in this Form 10-K.

/s/ BDO USA, LLP

Nashville, Tennessee

November 22, 2019