USPS Hazmat Non-Compliance Fee: Best Practices and FAQs

Shipping with USPS? A new charge could apply if a package looks like it contains hazardous materials (hazmat) but isn't labeled or declared correctly. The good news: this is almost always preventable with a quick packaging check. This guide walks you through what the fee is, why it happens, and the simple habits that keep your shipments compliant.
In this guide, you will learn about:

• What the USPS Hazmat Non-Compliance Fee is and when it applies
• The most common reason sellers get charged — and how to avoid it
• Best practices for preparing and labeling packages correctly
• Answers to the questions sellers ask most about this fee

For details on the related policy and product requirements, please refer to the Dangerous Goods Requirements and the Seller Terms of Service in the Additional Resources section below.

What Is the Fee and Where You'll See It

Starting July 12, 2026, USPS applies a $50 fee for any shipment that appears to contain hazardous materials but is not labeled or declared correctly. This is a carrier charge triggered at the point of shipping, not a penalty for selling a restricted product.
TikTok Shop Shipping and temporary listings
For temporary listing orders, hazmat labels will need to be printed separately through the designated carrier. To do this, sellers should follow their carrier guidelines and process to print the Hazmat symbol labels for both single and combined hazmat orders.
If a package you're about to ship is flagged, you'll see an alert on the Shipment result page before the label is finalized, giving you a chance to fix the issue first.

Best Practices

The single most common cause of this fee is reusing boxes or envelopes that still carry old hazmat labels or markings from a previous shipment. USPS scanners read those old markings and flag the package. Build these habits into your fulfillment routine:
Not sure whether your product counts as a dangerous good? Common examples include items with batteries, aerosols, flammable liquids, and other regulated goods:
When in doubt, check the product's Safety Data Sheet (SDS) or manufacturer information to see if it falls under a regulated hazard class before you ship.

Frequently Asked Questions (FAQs)

Why was I charged when my product isn't even hazmat?The most likely reason is reused packaging. If a box or envelope still shows hazmat labels or markings from a previous shipment, USPS flags it — even if what's inside is completely ordinary. Remove or cover old markings before you ship.
When does the fee start, and how much is it?The USPS fee is $50 per non-compliant shipment and applies to shipments from July 12, 2026 onward. There will also be a $7.50 handling fee for packages marked as hazmat.
How do I know if my product is a dangerous good?Review the product's Safety Data Sheet (SDS) or manufacturer details. Items such as lithium batteries, aerosols, flammable liquids, and certain chemicals are typically regulated. If your product qualifies, it must be labeled and declared correctly.
What should I do if I see a hazmat alert on the Shipment result page?Stop and review the package before finalizing the label. Check for old markings on reused packaging, confirm the actual contents, and correct any labeling or declaration issues. Fixing it at this step is the easiest way to avoid the fee.
I'm shipping a genuine hazmat item. What's required?You must package, label, and declare it according to hazmat shipping requirements. For a temporary listing, print the required labels through your carrier. See the Dangerous Goods Requirements for full details.
Am I responsible for this fee?As the shipper, you are responsible for correct hazmat handling under the Seller Terms of Service.

Additional Resources

• TikTok Shop Academy — Seller University
• USPS Shipping Restrictions — Hazardous Materials
• Dangerous Goods Requirements (link to the published policy page at publish time)
• Seller Terms of Service (link to the published page at publish time)