Exhibit 32.1

SECTION 1350 CERTIFICATIONS

In connection with the Annual Report of Peoples Financial Services Corp. (the “Company”) on Form 10-K for the period ending December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Craig W. Best 

Craig W. Best

Chief Executive Officer

(Principal Executive Officer)

/s/ John R. Anderson III 

John R. Anderson III

Executive Vice President and Chief Financial Officer

(Principal Financial Officer and Principal Accounting Officer)

Date: March 15, 2024