UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2023 Commission file number: 1-7945 DELUXE CORPORATION (Exact name of registrant as specified in its charter) MN 41-0216800 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 801 S. Marquette Ave.Minneapolis MN 55402-2807 (Address of principal executive o ...