← PHMSA Hazmat Kit

Who is exempt from PHMSA hazmat registration?

There are two different reasons you might not have to register — and people constantly confuse them. Either (1) your activity never hits a registration trigger (see the 6 triggers), or (2) you are an excepted entity under 49 CFR §107.606. Being a small business is not an exemption — it only lowers your fee tier.

Excepted entities (49 CFR §107.606(a))

• Government agencies — an agency of the Federal government, a State agency, or an agency of a political subdivision of a State.
• Indian tribes — and employees of the entities above acting in their official duties.
• Hazmat employees of a registrant — including an owner-operator of a motor vehicle who transports hazmat in commerce while the vehicle is leased to a registered motor carrier under a 30-day or longer lease (49 CFR part 376 or equivalent). Note the exception is the employee; the employer/registrant is not excepted.
• Certain foreign offerors — a person domiciled outside the U.S. who offers hazmat solely from a location outside the U.S., only if that person's country does not require U.S.-domiciled offerors to register reciprocally.
• Farmers — PHMSA excepts hazardous materials transported in direct support of a farmer's own farming operation; the exception is narrow and does not cover commercial or non-farming hazmat activity.

Common claims that are NOT exemptions

• "I'm a small business." No — small businesses still register if they hit a trigger; they just pay the lower $275 fee tier instead of $2,600.
• "I'm a Canadian shipper / carrier." Canadian shippers are excepted by reciprocity, but a Canadian carrier transporting hazmat in the U.S. must register and designate a U.S. Agent of Service.
• "I ship into the U.S. from abroad." A non-U.S. company offering hazmat for transport to the U.S. is not automatically excepted — if the activity triggers registration, it applies, and a U.S. Agent of Service is required.
• "I'm a government contractor." Contractors performing registrable activities are not covered by the agency exception.
• "Registration isn't needed because I'm exempt." Even excepted entities still owe the separate 49 CFR Part 172 obligations — shipping papers, labels, placards, training, and a 24-hour emergency phone number — on every hazmat shipment.

Independent guidance aid, not PHMSA and not a filing service. Exceptions are fact-specific — verify against 49 CFR Part 107 Subpart G (§107.601, §107.606, §107.608) and the PHMSA registration overview.