Watch out. You could get hit with penalties and interest if you don’t get your paper 1040 postmarked on time. Here’s what ...

Dropping your return in a mailbox isn't enough in 2026. Learn why a missing postmark could trigger "failure to file" ...

Filing your taxes by mail? The postmark is everything. Learn about new USPS collection time rules and other tips to ensure ...

If you plan to mail your income taxes right on deadline, clear your calendar. This year, last-minute filers will have to get ...

Taxpayers who miss the April 15 filing deadline should submit their tax return as soon as possible, the IRS notes. Filers may ...

The Postal Service finalized rules clarifying that a postmark date may not match when mail was first accepted, potentially affecting tax and voting deadlines. The changes add a new section to the ...

Before you mail any important documents, read this: Major changes are being made to the U.S. Postal Service (USPS) postmark process in 2026, and they could result in late fees and penalties for people ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, the postmark — a mark affixed by the Postal Service that shows where and when mail was accepted — has been used in ...

Changes in U.S. Postal Service rules may cause mailed tax returns to be considered late, despite timely mailing.