Company: DLX
Filing Date: 2025-04-24
Form Type: S-3ASR
Source: 0001104659-25-038372
Chunk: 2

Company: DELUXE CORP
Filing Date: 2025-04-24
Form: S-3ASR
Chunk 2
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 these securities and it is not soliciting an offer to buy these securities in any state or other jurisdiction where the offer or sale is not permitted.

We may offer and sell these securities to or through one or more underwriters, dealers or agents, or directly to purchasers, on a continuous or delayed basis. The prospectus supplement for each offering will describe in detail the plan of distribution for that offering and will set forth the names of any underwriters, dealers or agents involved in the offering and any applicable fees, commissions or discount arrangements.

Our common stock is listed on the New York Stock Exchange under the symbol “DLX.” If we decide to list or seek a quotation for any other securities we may offer and sell from time to time, the prospectus supplement relating to those securities will disclose the exchange or market on which those securities will be listed or quoted.

INVESTING IN OUR SECURITIES INVOLVES RISKS. YOU SHOULD CAREFULLY CONSIDER THE RISKS DESCRIBED UNDER “RISK FACTORS” ON PAGE 2OF THIS PROSPECTUS, AS WELL AS THE OTHER INFORMATION CONTAINED OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS AND ANY APPLICABLE PROSPECTUS SUPPLEMENT, BEFORE MAKING A DECISION TO INVEST IN OUR SECURITIES.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.**

#### The date of this prospectus is April 24, 2025.
TABLE OF CONTENTS

TABLE OF CONTENTS

| ​                                                    | ​ | ​ | Page |   |    |   | ​ |
| ABOUT THIS PROSPECTUS                                | ​ | ​ | ​    | ​ |  1 | ​ | ​ |
| CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS | ​ | ​ | ​    | ​ |  2 | ​ | ​ |
| RISK FACTORS                                         | ​ | ​ | ​    | ​ |  2 | ​ | ​ |
| WHERE YOU CAN FIND MORE INFORMATION                  | ​ | ​ | ​    | ​ |  2 | ​ | ​ |
| INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE      | ​ | ​ | ​    | ​ |  3 | ​ | ​ |
| OUR COMPANY                                          | ​ | ​ | ​    | ​ |