Mail Your Tax Return with USPS
Use the U.S. Postal Service® to mail your tax return, get proof that you mailed it on a specific date with Certified Mail® or Registered Mail® service, and track its arrival at the IRS.
Federal Tax Deadlines
The IRS considers a tax return filed on time if it is addressed correctly, has enough postage, and is postmarked by the deadline (for both standard filing and extensions):
To ensure your tax return is postmarked on or before the due date, take it to your local Post Office™ location, go to the retail counter, and ask the retail associate to postmark it.
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Mailing Tips
- Send to the Correct Address
Check the IRS website for where to mail your tax return. Write both the destination and return addresses clearly or print your mailing label and postage.
Where to Send Paper Tax Returns - Use Correct Postage
Weigh your envelope using a kitchen scale or postage scale and apply the right amount of postage. Most tax returns are several pages long and weigh more than 1 oz. Tax returns sent without enough postage will be returned. Calculate Postage - Meet the Postmark Deadline
If your tax return is postmarked by the filing date deadline, the IRS considers it on time. Take your tax return to your local Post Office location, go to the retail counter, and ask the retail associate to postmark it.
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Proof of Mailing & Delivery
For added peace of mind, you can purchase Certified Mail or Registered Mail service at the Post Office retail counter when you mail your tax return. You’ll get a receipt to prove when you mailed your item, and you can see when it was delivered (or that a delivery attempt was made).
Note: After you send your tax return, keep your receipt in a safe place. The Postal Service does not keep copies of receipts.
Learn MoreAlso, when you use a USPS service with tracking, your tracking number will provide updates as your item travels to its destination, including the date and time of delivery or attempted delivery. You can access tracking information for non-signature items for 120 days (2 years for signature items). With the USPS Tracking Plus® service, you can buy extended tracking history for up to 10 years.
USPS Tracking PlusMailing Options & Services
These mailing services apply a postmark to your return. If your return is postmarked by the IRS deadline date, it is considered on time. With Click-N-Ship® service, you can pay for postage online and print a shipping label from your own computer. Generating a Click-N-Ship label with postage creates an electronic record for the label on that specific date, so it is important that you send your package on the shipping date you used to create the label. Your online Click-N-Ship account will save your shipping history for six months.
- Priority Mail Express®
- Delivery in 1-3 days
- USPS Tracking® included
- Eligible for Click-N-Ship
- Priority Mail®
- Delivery in 2-3 days
- USPS Tracking included
- Eligible for Click-N-Ship
- Eligible for Certified Mail or Registered Mail
- First−Class Mail®
- Delivery in 1-5 days
- Extra services available
- Eligible for Certified Mail or Registered Mail
IRS Tips & Help
The Postal Service recommends that you confirm all tax information with a tax professional or the IRS.
Visit the IRS Website