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Do I need UCR if I have an MC number only?

Yes. UCR registration is required for any motor carrier, broker, freight forwarder, or leasing company operating in interstate or international commerce — regardless of whether you have an MC, an MC-B, MC-FF, or just a USDOT. The MC number alone does not satisfy UCR.

UCR is a separate program from FMCSA operating authority. The MC and USDOT are FMCSA registrations; UCR is a 41-state compact administered through participating states.

Any entity holding active interstate operating authority — motor carrier, broker, freight forwarder, or leasing company — has to register with UCR annually. The fee depends on fleet size (tier 1-6).

Brokers and forwarders pay the lowest tier (Tier 1) regardless of how many carriers they broker through, because they don't operate vehicles themselves. Motor carriers pay based on the count of power units operated.

Missing UCR doesn't directly trigger an FMCSA revocation, but it does trigger state enforcement — most participating states do random roadside checks for UCR receipts and can issue out-of-service orders for non-compliance.

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