Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
BTRS Holdings Inc.
Lawrenceville, New Jersey
We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-254301) of BTRS Holdings Inc. of our report dated March 24, 2021 relating to the financial statements of BTRS Holdings Inc. (f/k/a Factor Systems, Inc. (dba Billtrust)), which appears in this Current Report on Form 8-K/A of BTRS Holdings Inc.
/s/ BDO USA, LLP
Woodbridge, New Jersey
March 24, 2021