Shipping Compliance

HAZMAT Shipping: The USPS $50 Non-Compliance Fee and How to Ship Legally

USPS now charges a $50 fee on undeclared or mislabeled hazardous materials, in effect since July 12, 2026. Here is what counts as HAZMAT, how to ship it compliantly, and what is banned outright.

USPS Fee

$50.00 HAZMAT non-compliance fee, effective July 12, 2026

USPS assesses a $50.00 fee per shipment that contains undeclared hazardous materials or that is improperly packaged, marked, or labeled. It took effect July 12, 2026, and is in addition to any existing dangerous-goods surcharge. Declaring and labeling your shipment correctly is what keeps you on the right side of it.

Many everyday products are regulated hazardous materials: lithium batteries in phones and laptops, perfume and cologne (flammable liquids), aerosols, nail polish, and more. The U.S. Postal Service charges a $50.00 non-compliance fee for shipments that contain undeclared hazardous materials or that are improperly marked or labeled. It took effect July 12, 2026, and is listed in Notice 123 (the USPS price list). This guide explains what triggers the fee, how to ship HAZMAT the right way, and which items are banned from the mail entirely.

What Triggers the $50 Fee#

Hazardous materials shipped without being declared to USPS
Regulated items sent without the required markings or labels (for example, missing lithium-battery marks or limited-quantity markings)
HAZMAT tendered through a service or class of mail that does not permit it
Improper or insufficient packaging for the hazard class being shipped

How to Ship HAZMAT Properly#

Classify the item first: Check the product's Safety Data Sheet (SDS) to confirm whether it is regulated and what hazard class it falls under before you create a label.

Declare it: Never ship undeclared HAZMAT. Declaring the material is the single most important step for avoiding the $50 non-compliance fee.

Use ground service: Air transport is heavily restricted for most consumer HAZMAT. Choose a compliant ground service, which also tends to be the cheaper option.

Mark and label correctly: Apply the required markings (limited quantity / ORM-D where applicable, lithium-battery marks for devices) exactly as the carrier specifies.

Package to the hazard class: Use packaging rated for the material: leak-proof inner containers, absorbent for liquids, and strong outer boxes that pass the carrier's requirements.

Train where required: FedEx and UPS require carrier-approved HAZMAT training (renewed every three years) before you can tender dangerous goods.

Carrier HAZMAT Policies at a Glance#

Carrier	What You Can Ship
USPS	Most restrictive. Accepts limited quantities of certain HAZMAT via ground (surface) only; lithium batteries installed in devices may ship with proper marks. Many items are entirely prohibited. Follow USPS Publication 52.
FedEx	Accepts a broad range of dangerous goods with proper classification, packaging, labeling, and documentation. Requires certified, trained shippers. A HAZMAT surcharge applies.
UPS	Accepts HAZMAT with DOT/IATA compliance and UPS-approved training. Ground accepts most regulated HAZMAT with correct packaging and labeling. Surcharges and special-handling fees apply.

Items That Are Always Prohibited in the Mail#

Some materials cannot be mailed under any circumstances, regardless of how they are packaged or labeled. Sending them is not a fee situation; the shipment is non-mailable.

Metallic (elemental) mercury and any device that contains it
Antique thermometers, barometers, blood pressure monitors, and similar instruments that contain metallic mercury
Explosives, fireworks, and ammunition primers
Loose or damaged/recalled lithium batteries shipped by air

Reminder from USPS: metallic mercury and devices containing metallic mercury are always prohibited in the mail stream. This includes antique items such as thermometers, barometers, blood pressure monitors, and similar devices. Do not mail them, even sealed or padded.

HAZMAT Shipping: Key Takeaways#

USPS charges a $50 non-compliance fee on undeclared or improperly labeled HAZMAT, in effect since July 12, 2026.
Notice 123 (the July 12, 2026 price list) now includes the HAZMAT non-compliance fee.
Everyday items count as HAZMAT: lithium batteries, perfume, aerosols, nail polish, and more.
Metallic mercury and devices containing it are always prohibited and can never be mailed.
Declaring, packaging, and labeling correctly is what keeps you out of the fee, and compliant HAZMAT almost always ships ground.

Why the Rate You Pick Matters More for HAZMAT#

HAZMAT almost always forces ground service and carries a dangerous-goods surcharge, so there is little room to shave cost on the service itself. The lever you do control is the base label rate.

With the 2026 carrier increases now in effect (USPS +5.4%, UPS +5.9%, FedEx +5.9%), retail counter prices on those ground services climb the most, and the new $50 non-compliance fee stacks on top of any shipment you get wrong. Buying discounted labels below commercial rates absorbs the base-rate climb, and shipping compliantly keeps the $50 fee off the bill entirely.

Rate-shop the eligible ground services on every HAZMAT order.
Right-size packaging to stay in the lowest valid weight and dimension tier.
Treat compliance as cost control: one avoided $50 fee outweighs the savings on several labels.

Common Mistakes That Trigger the HAZMAT Fee#

Mistake	Why It Hurts	Better Approach
Shipping perfume or nail polish as ordinary mail	Flammable liquids are regulated; undeclared they invite the $50 fee and possible federal penalties.	Declare as a limited-quantity hazardous material and ship ground with the required markings.
Mailing spare lithium batteries loose	Standalone lithium batteries have strict rules and are barred from air; mislabeled shipments are non-compliant.	Ship installed-in-device where possible, use ground, and apply lithium-battery marks.
Listing antique instruments without checking for mercury	Mercury thermometers and barometers are permanently non-mailable, not just fee-bearing.	Confirm the item contains no metallic mercury before listing or shipping it.
Assuming the fee is just a surcharge to absorb	The $50 applies per non-compliant shipment and is avoidable, unlike the base dangerous-goods surcharge.	Fix the root cause: declare, package, and label correctly every time.

HAZMAT Compliance Checklist#

Check the SDS and confirm the hazard class before creating a label.
Declare the hazardous material to the carrier.
Select a compliant ground service.
Apply all required markings and labels.
Use packaging rated for the hazard class.
Complete carrier HAZMAT training for FedEx/UPS shipments.
Confirm the item is not on the always-prohibited list (e.g., metallic mercury).
Rate-shop discounted labels to offset the 2026 increases and dangerous-goods surcharge.

Official Sources & References#

Federal Register / Postal Regulatory Commission filing (PDF): Official filing for the $50 HAZMAT non-compliance fee
USPS DMM Advisory (May 12, 2026): Postal Service advisory on the change
U.S. Postal Inspection Service: HAZMAT: What counts as hazardous materials and how to ship safely

HAZMAT Shipping: Questions Senders Ask#

What is the USPS $50 HAZMAT non-compliance fee?

It is a $50.00 fee the Postal Service assesses on any shipment that contains undeclared hazardous materials or that is improperly packaged, marked, or labeled. It took effect July 12, 2026, and is listed in Notice 123.

When does the fee take effect?

It took effect July 12, 2026. It was filed with the Postal Regulatory Commission and now appears in the USPS price list (Notice 123).

How do I avoid the $50 fee?

Declare hazardous materials to USPS, ship them on a permitted ground service, package them to the correct hazard class, and apply every required marking and label. The fee targets undeclared or mislabeled shipments, so correct paperwork and labeling is what keeps you out of it.

Can I mail an antique mercury thermometer or barometer?

No. Metallic mercury and any device containing it, including antique thermometers, barometers, blood pressure monitors, and similar instruments, are always prohibited in the mail stream. They cannot be mailed under any packaging or service.

What everyday items count as HAZMAT?

Common examples include lithium batteries (and devices containing them, like phones and laptops), perfume and cologne, aerosol sprays, nail polish and remover, paint, matches and lighters, hand sanitizer, and certain cleaning chemicals. When in doubt, check the product's Safety Data Sheet.

What I'd Ship That sells: I'd Ship That prints discounted USPS and UPS labels. FedEx is covered on this page for comparison and reference only, and is not sold through I'd Ship That.

Ship Compliant HAZMAT for Less#

Lock in discounted USPS and UPS ground rates for batteries, perfume, and other regulated goods.

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