Florida Dept. of Revenue - General Tax Administration

eFile
and Pay

Registering a
Business

Tax
Information

Title	Body	TopicDate	App Created By	App Modified By	Approval Status
Understanding U.S. Postal Service Postmarks	The U.S. Postal Service has updated its Domestic Mail Manual to clarify that a postmark date on most mail reflects when the item is first processed at a postal facility, not necessarily when it is placed in a mailbox or collected by a mail carrier. Because Florida law relies on postmark dates to determine whether mailed tax returns and payments are timely, this clarification may affect due dates. For more information, review Tax Information Publication #26ADM-01.	1/30/2026			Approved