Base-State Rules & UCR Jurisdiction
UCR is a multi-state compact, not a federal program. Carriers register in their base state and the fee is shared across all participating states. The base-state rules determine where you file and which state's portal you use — not which states you can operate in.
Base-state rules: most carriers register in their state of principal residence (sole-proprietor) or principal office (LLC/corporation). If your state isn't in UCR, you register in the nearest UCR-participating state.
Currently 41 states participate in UCR. The non-participating states (Arizona, Nevada, Oregon, Wyoming, Florida, Maryland, New Jersey, Vermont, D.C., Hawaii) don't collect UCR but the carriers based there are still required to register through a participating state.
A carrier based in a non-participating state typically registers in the nearest participating state — California for AZ/NV; Idaho or Washington for OR; Colorado for WY. The receipt of the UCR registration is then valid in all participating states.
The cluster below covers base-state selection, which states participate, and how to handle a base-state move mid-year (the registration follows the carrier's base state of residence as of the registration date).
Articles in this cluster
- UCR Base State Rules: Participating States, Non-Participating States, Choosing One
41 states participate directly in UCR. If your principal place of business is in one of them, that’s your base state. If not, you pick a participating neighbor. Here’s how the rules actually work.
FMCSA Compliance · 6 min read · Updated 2026-05-02
- When Is UCR Due? The December 31 Deadline Explained
UCR registration for the next calendar year opens in the fall and becomes enforceable January 1. There is no grace period — here’s what that means in practice.
UCR Filing · 5 min read · Updated 2026-05-02
- What Happens If You Miss UCR? Roadside, OOS, and State Enforcement
Missing UCR triggers roadside out-of-service orders and state-level fines, even though it rarely affects FMCSA operating authority directly. Here’s what the enforcement chain actually looks like.
UCR Filing · 6 min read · Updated 2026-05-02
- UCR Late Filing Penalties by State: What Each State Can Do After December 31
After December 31, every participating state can act. Civil penalties, out-of-service orders, court costs, and CSA exposure — the full enforcement chain for missed UCR under 49 USC §14504a.
FMCSA Compliance · 7 min read · Updated 2026-05-02