PHMSA hazmat registration has two fee tiers (49 CFR §107.612):
Getting the tier wrong is expensive: overpaying misclassifies you at the $2,600 level (nearly 10x), while underpaying at the small-business rate when you don't qualify carries regulation and penalty exposure. The confusion is real because many operators don't know whether they even qualify for the small-business rate or need to register at all.
PHMSA warns that third-party filing services add fees on top of the government charge. File directly at the official MOTUS portal — no third-party filing fee (the $275/$2,600 government registration fee itself still applies).
Independent guidance aid, not PHMSA and not a filing service. Verify against 49 CFR Part 107 Subpart G.
Turn this into a documented scope determination, small-business fee-tier classification, multi-year cost math and an annual renewal tracker — one printable report for your records.
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