While most tax returns and other dealings with the IRS are handled electronically, there are still instances when forms, payments, or other documents are mailed to the agency. A final rule regarding U.S. Postal Service postmarks should be taken into account if mailing an estimated tax payment or other paperwork to the IRS. The official postmark is one applied to the envelope or other unit, which may not necessarily be at the time it’s dropped at a post office. The postmark date—which under the “mailbox rule” is the date of tax return or payment is deemed to have been made—could be applied at an automated facility on another day. What to do: use a retail counter at a post office and request that the envelope be postmarked in your presence. #IdeaoftheDay
Check out todays new blog post and the Supplements for the 2026 tax books!
