Do not open it to check
One slit with a knife converts a free refusal into a postage-paid return on Package Services and Parcel Select. If there is any chance you will send it back, read the label and leave the tape alone.
An addressee may refuse to accept a mailpiece when it is offered for delivery, and may also mark an already delivered piece Refused and return it within a reasonable time, provided the piece and any attachment have not been opened (per pe.usps.com, DMM 508 sections 1.1.2 and 1.1.3, checked 2026-07-28). Opening the box is the moment that right ends, and after that a return costs the refuser postage.
It is written into postal regulation, with one condition that decides everything: whether the carton is still sealed.
Postal regulation splits refusal into a doorstep case and an afterthought case, and treats them differently.
Reasonable time is deliberately not a number, which means it is a local judgement rather than a right you can insist on a fortnight later. Deal with an unwanted parcel the day it arrives and the question never comes up.
| Situation | Rule | Section |
|---|---|---|
| Offered at the door | The addressee may refuse to accept it | DMM 508 1.1.2 |
| Delivered but unopened | May be marked Refused and returned within a reasonable time | DMM 508 1.1.3 |
| Package Services or Parcel Select, unopened | May be refused and returned to the sender without affixing postage | DMM 507 1.5.4 |
| Package Services or Parcel Select, opened | The addressee must affix the applicable postage to return the piece | DMM 507 1.5.4 |
| Undeliverable Priority Mail Express, Priority Mail, First-Class or Ground Advantage | Returned to the sender at no additional charge | DMM 507 1.8.3 |
The answer turns on the mail class and on that one condition about opening. For an unopened Package Services or Parcel Select piece, DMM 507 1.5.4 lets the addressee refuse delivery and have it returned to the sender without affixing postage. Once the piece or any attachment has been opened, the same section requires the addressee to affix the applicable postage to send it back.
On the classes most parcels travel under, the sender absorbs the outcome. Priority Mail Express, Priority Mail, First-Class Mail and USPS Ground Advantage pieces that cannot be delivered as addressed or forwarded are returned to the sender at no additional charge under DMM 507 1.8.3. The sender loses the outbound postage and the sale, not a separate return fee.
That is a useful thing for buyers to know before they open a box they suspect they do not want, and useful for sellers to know before promising a customer that refusing is free for everybody. It is free for the person refusing, and it is never free for the person who shipped it. What the sender pays to send it again is priced on our returned to sender guide.
Refusal is blunt. It sends the parcel back with no paperwork attached, which is exactly what a seller does not want if they need to match a return to an order. Where a relationship matters, a proper return label with its own tracking is the better tool, and our return label guide covers how those are bought.
For a sense of the cost involved, here are live SMKlog quotes for a 12 x 10 x 6 in carton at 4 lb going Newark, NJ 07102 to Atlanta, GA 30303 on 2026-07-28.
| Carrier | Service | Price | Transit window returned |
|---|---|---|---|
| USPS | Ground Advantage | $8.48 | 8-9 business days |
| UPS | Ground Saver | $13.12 | window not returned |
| FedEx | Ground Economy | $13.18 | 6-7 business days |
| UPS | Ground | $13.38 | 2-3 business days |
| UPS | 2nd Day Air | $21.96 | 2-3 business days |
Under nine dollars buys a tracked, documented return on that lane, which is often worth more to both sides than a free but anonymous refusal. It also avoids the situation where a refused parcel lands back at a seller weeks later with no clue which order it belongs to.
Refusing something you never ordered is a different problem again. Unsolicited goods carry their own consumer protections, and a parcel addressed to a previous occupant should go back in the mailbox or to the carrier marked as not at this address rather than being opened.
One slit with a knife converts a free refusal into a postage-paid return on Package Services and Parcel Select. If there is any chance you will send it back, read the label and leave the tape alone.
The piece travels back on its original addressing with no return tracking of its own. Sellers expecting a refund should ask for a return label rather than trusting a silent boomerang.
These sections govern USPS mail. UPS and FedEx handle refused shipments under their own service terms, so check the carrier that actually holds the parcel before assuming the same rule applies.
Yes. DMM 508 1.1.2 states that the addressee may refuse to accept a mailpiece when it is offered for delivery, so handing it straight back to the carrier is enough and no form is involved.
Only while it is unopened. DMM 508 1.1.3 allows an addressee to mark a piece Refused after delivery and return it within a reasonable time, provided the piece or any attachment has not been opened.
For an unopened Package Services or Parcel Select piece, DMM 507 1.5.4 lets the addressee return it without affixing postage. Once it has been opened, the same section requires the addressee to pay the applicable postage to send it back.
Not a separate fee on the common classes. Priority Mail Express, Priority Mail, First-Class Mail and USPS Ground Advantage pieces come back to the sender at no additional charge under DMM 507 1.8.3, though the outbound postage is already spent.