Application for mailing at Non-Profit Rate with USPS (USPS Form 3624)
Applying for Authorization to Mail Non-Profit Standard Mail Rates with the USPS.
Download USPS Form 3624 by clicking the image below. Complete and return to the USPS. Looking for a quick response? You can submit the form online and use the handy checklist on the last page of the form to make sure you include all necessary documentation!