Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to The Western Union Company 2024 Long-Term Incentive Plan of ourreports dated February 22, 2024, with respect to the consolidated financial statementsof The Western Union Company and the effectiveness of internal control over financial reporting of The Western Union Company included in its Annual Report (Form 10-K) for the year ended December 31, 2023, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Denver, Colorado

May 20, 2024