Question 1

Does the IRS use the postmark date or the delivery date?

Accepted Answer

The IRS uses the postmark date under the "mailbox rule" (IRC §7502). A tax return postmarked by April 15 is considered timely filed, even if it arrives at the IRS days later. This applies to USPS postmarks only — private meter dates do not qualify.

Question 2

How do I get a same-day USPS postmark?

Accepted Answer

Take your letter to a USPS counter and ask the clerk to hand-cancel it. This guarantees a visible postmark with that day's date. Drop-box mail is postmarked when it's collected, which may be the next business day.

Question 3

What is the difference between a postmark and postage?

Accepted Answer

Postage is the fee you pay to mail a letter (stamp, meter strip, or printed indicia). A postmark is the USPS cancellation stamp showing the date and location of acceptance. They serve different purposes — postage pays for delivery, a postmark proves when you mailed it.

Question 4

Does metered mail get a USPS postmark?

Accepted Answer

Not always. Metered mail may bypass the cancellation process since the meter strip already shows a date. If you need a USPS postmark for legal proof, use a stamp and hand-cancel at the counter, or use certified mail which creates an independent USPS record.

USPS Postmark Guide

How to Postmark a Letter: USPS Rules and Options

Related Topics

Frequently Asked Questions

USPS Postmark Dates, Rules & Proof of Mailing