04/05/2026
ATTENTION: If you plan to mail your taxes or your payment on April 15 there are something’s you need to know!
This new rule published in the 11/24/25 Federal Register clarifies that a machine applied post mark indicates the date of the first automated processing operation. This can be later than the date the mail is dropped off.
If you are mailing your taxes on April 15th, you must go into the post office at the counter and request a manual post mark. If you don’t do this your taxes could be considered late.