# Hazardous materials shipped undeclared via USPS commercial packages — Postal shipping restrictions by item category

For Hazardous materials shipped undeclared via USPS commercial packages, carrier is USPS; restriction type is restricted; scope is all competitive commercial products (from July 2026); conditions is A HazMat Noncompliance Fee of $50 applies to any competitive commercial product when hazardous materials are detected but the customer did not appropriately declare and label them; a HazMat Handling Fee for USPS Ground Advantage is established at $0 initially, recorded from its source on 2026-08-10.

- **Item category:** Hazardous materials shipped undeclared via USPS commercial packages _(verified: appears in the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** all competitive commercial products (from July 2026) _(our reading, not quoted from the source)_
- **Conditions:** A HazMat Noncompliance Fee of $50 applies to any competitive commercial product when hazardous materials are detected but the customer did not appropriately declare and label them; a HazMat Handling Fee for USPS Ground Advantage is established at $0 initially. _(verified: appears in the quote below)_

## What the source says

> Also, a HazMat Noncompliance Fee of $50 will be applied to any competitive commercial product when Hazardous Materials are detected but the customer did not appropriately declare and label them.

## Source

- https://www.ecommercebytes.com/2026/07/05/new-usps-noncompliance-fee-could-take-sellers-by-surprise/

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).