Flat Rate Insurance: What USPS Flat Rate Boxes Cover

Flat rate insurance is the coverage built into USPS Priority Mail Flat Rate boxes and envelopes: every Flat Rate piece with a USPS Tracking barcode includes up to $100 of insurance against loss, damage or missing contents at no extra charge. If the contents are worth more, you can buy additional USPS insurance up to $5,000, or use third-party coverage.

There’s no separate “flat rate insurance” product to buy. The $100 comes from the Priority Mail service itself, so a Flat Rate box carries the same included coverage as a weight-priced Priority Mail package. This guide covers what that coverage pays for, what it excludes, and how to file a claim within USPS deadlines.

What Is Flat Rate Insurance?

“Flat rate insurance” is the everyday name for the included insurance on USPS Flat Rate mail. USPS says Priority Mail, Priority Mail Express and USPS Ground Advantage each include up to $100 of insurance in the price, and Flat Rate boxes and envelopes are Priority Mail (or Priority Mail Express) pieces. Coverage applies automatically; the first $100 of coverage needs no extra step or separate purchase.

One condition matters: the piece must carry a USPS Tracking barcode, and the postage must be paid at retail or commercial prices. Labels bought online, through a shipping platform or at a Post Office counter all meet that rule. The USPS shipping hub covers the rest of the Priority Mail family if you’re comparing services.

The DMM lists a few cases where included coverage doesn’t apply, such as Priority Mail sent as Open and Distribute or through Premium Forwarding Service. Ordinary retail and online Flat Rate shipments aren’t affected.

How Much Insurance Comes With a Flat Rate Box?

Every Priority Mail Flat Rate box and envelope includes up to $100. Priority Mail Express Flat Rate Envelopes also include up to $100, which the DMM describes as merchandise insurance against loss, damage or missing contents. Here’s how the coverage lines up:

Insurance pays the item’s actual value, not the amount you declared. A $60 item in a box insured for $100 pays up to $60, so there’s no benefit in over-insuring. To see the postage on any Flat Rate option, check the cost to ship a Medium Flat Rate box or compare all box sizes in our USPS Flat Rate boxes guide.

What Does Flat Rate Insurance Cover?

Included insurance pays for three things while the package is in the USPS network: loss, damage, and missing contents. That covers a box that never arrives, contents crushed in transit, and items taken out of a package before delivery.

• Loss: the package disappears in the mailstream and USPS can’t locate it.
• Damage: the contents arrive broken because of handling, provided they were packed properly.
• Missing contents: the box arrives but some or all of the items are gone.

Coverage ends at delivery. Under DMM 609, USPS won’t pay for loss or damage that happens after it delivers the item, so a box stolen from a porch after a delivery scan isn’t an insurance claim. Not sure your label has coverage at all? Our walkthrough on how to tell if a USPS package has insurance shows where to look on the receipt and tracking page.

What Isn’t Covered by Flat Rate Insurance?

The nonpayable-claims list in DMM 609 applies to Flat Rate mail just as it does to every other insured USPS piece. The exclusions shippers run into most often are:

If you ship coins, cash equivalents or other valuables, Registered Mail is the USPS option built for them, with coverage up to $50,000. The general rules for every USPS service are summarized in our USPS insurance guide to coverage and claims.

When Should You Add More Coverage to a Flat Rate Box?

Add coverage whenever the contents are worth more than $100, because USPS can’t pay beyond the included amount otherwise. You can buy additional insurance up to $5,000 on Priority Mail and Priority Mail Express when you create the label or at the counter. For Priority Mail Express, additional insurance isn’t available if you waive the signature.

Third-party coverage is the other route. If you ship through ParcelPath, you can add Shipsurance coverage at checkout, and claims go to the insurer, not the carrier. ParcelPath is free to use, with no subscription or per-label fees, and offers up to 89% off USPS and up to 85% off UPS. You can compare Flat Rate and weight-based Priority Mail prices for your box in the ParcelPath rate calculator before you decide.

Small sellers who ship often usually settle on a simple rule: let the included $100 cover low-value orders and insure only the exceptions. Our guide to ways to save on shipping for small business covers that kind of policy alongside packaging and carrier choice. How carriers treat the value you write on a label is explained in what declared value means.

How Do You File a Flat Rate Insurance Claim?

You file online at usps.com with a free USPS.com account, or by mail with a claim form requested from USPS. The timing depends on the problem:

Have these ready before you start:

1. The tracking or label number from the Flat Rate label.
2. Proof of insurance: the mailing receipt, the label record, or the outer box showing insured status.
3. Proof of value, such as a sales receipt, paid invoice or card statement.
4. For damage, clear photos and a repair estimate if the item can be repaired.
5. The box, packing materials and damaged item. USPS may ask you to bring them to a Post Office for inspection.

USPS says it usually decides a claim within 5 to 10 days, and approved claims are typically paid within 7 to 10 business days. If a claim is denied, you can appeal within 30 days, and a final appeal is allowed within 30 days of the first appeal decision. Our USPS claims and support guide walks through the online form screen by screen.

A missed delivery isn’t a claim. If the carrier left a notice, schedule a free USPS redelivery first, and if the label has a typo, see whether you can change the address on a USPS shipping label before the package goes astray.

Does International Flat Rate Mail Include Insurance?

Yes, with different limits. USPS says Priority Mail International covers merchandise up to $200 and non-negotiable documents up to $100 for reconstruction, and Priority Mail Express International carries the same $200 merchandise and $100 document coverage. Additional insurance is available, but the maximum depends on the destination country, with a cap of $5,000 coverage.

Check the country’s listing in the International Mail Manual before you ship valuables, since some countries accept lower limits or no insurance at all. Insurance covers the contents, not customs duties or taxes the recipient pays. To price an international Flat Rate box, see our breakdown of USPS international shipping rates by country.

How Should You Pack a Flat Rate Box So a Claim Holds Up?

Pack as if the box will be dropped, because improper packaging is one of the most common reasons USPS denies a damage claim. The Flat Rate box is free, but it’s thin cardboard, so the cushioning inside does the work.

• Leave room for cushioning on every side of fragile items, and choose a larger Flat Rate size if the item fills the box.
• Wrap each fragile piece separately so items can’t hit each other.
• Fill empty space so nothing shifts when you shake the box.
• Tape every seam, not just the flap.
• Photograph the packed box and contents before you seal it, so you can show how it was packed if you file a claim.

If an item doesn’t fit in any Flat Rate box, it’s usually cheaper by weight; our guide to shipping large boxes and dimensional weight explains when size starts to cost more than weight. Palletized goods follow freight rules instead, covered in our flat rate freight shipping options and freight class calculator tips.

Frequently Asked Questions

Are USPS Flat Rate boxes automatically insured?

Yes. Priority Mail Flat Rate boxes and envelopes include up to $100 of insurance against loss, damage and missing contents, as long as the piece has a USPS Tracking barcode and was paid at retail or commercial prices. You don’t need to request it. For contents worth more than $100, buy additional insurance, up to $5,000, when you create the label.

How much flat rate insurance can I add to a Priority Mail box?

You can raise coverage on a Priority Mail Flat Rate box to a maximum of $5,000 of insurance. USPS pays only the actual value of the contents, so insure for what the item is worth, not more. For items above $5,000, or for cash and bullion, USPS Registered Mail offers coverage up to $50,000.

Does flat rate insurance cover a package stolen from my porch?

No. USPS insurance covers loss and damage only while the package is in the USPS network, and DMM 609 lists loss or damage after delivery as nonpayable. If tracking shows the Flat Rate box was delivered and it’s gone, report it to USPS and your local Post Office, but it isn’t an insurance claim.

How long do I have to file a flat rate insurance claim?

For damage or missing contents, you can file right away, and no later than 60 days from the mailing date. For a lost Priority Mail Flat Rate package, wait 15 days after mailing, then file before day 60. Priority Mail Express claims for lost items can be filed after 7 days. File online at usps.com with your tracking number.

Sources

• USPS: Insurance and extra services (included insurance, $5,000 and $50,000 limits)
• USPS Domestic Mail Manual 503: Extra services, insured mail
• USPS Domestic Mail Manual 609: Filing indemnity claims and nonpayable claims
• USPS: File a domestic claim (deadlines, evidence, appeals)
• USPS: International insurance and extra services
• USPS International Mail Manual 323: Priority Mail International insurance

For more guides on postage, packaging and coverage, browse our shipping calculator guides.

Part of our What Does Declared Value Mean guide. Related: Shipping Calculator Guides.