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FMCSA Compliance

UCR Base State Rules

Last updated April 24, 2026
6 min read
FMCSA Compliance

By Korey Sharp-Paar · Founder, FastUCR Filing

Every UCR filing names a base state — the participating state that receives and administers the registration. The base state does not change the fee; it just determines which state's UCR administrator processes your record. Choosing a base state is straightforward if you are in one of the 41 participating states, and slightly more involved if you are not.

Participating vs. Non-Participating States

Forty-one states participate directly in UCR. The non-participating jurisdictions are:

  • Arizona
  • Florida
  • Hawaii
  • Maryland
  • Nevada
  • New Jersey
  • Oregon
  • Vermont
  • Wyoming
  • District of Columbia

Non-participating states did not ratify the UCR agreement under the 2005 Safe, Accountable, Flexible, Efficient Transportation Equity Act (SAFETEA-LU). Carriers domiciled in non-participating states are still federally required to register — they just route the filing through a participating neighbor.

If You Are in a Participating State

Your base state is the state where your principal place of business is located. “Principal place of business” follows the same test FMCSA uses for USDOT registration: the primary office from which the carrier's interstate operations are directed. A Texas carrier with a headquarters in Dallas files with Texas as base state. A multi-facility carrier picks the primary facility. There is no choice to make — the regulation names the state for you.

If You Are in a Non-Participating State

You select a neighboring participating state as your base state during filing. The convention is to pick the closest participating state so the administrative trail matches your operating geography:

  • Florida carriers typically pick Georgia.
  • Arizona carriers typically pick California, New Mexico, or Utah.
  • Oregon carriers typically pick Washington or California.
  • New Jersey carriers typically pick Pennsylvania or New York.
  • Nevada carriers typically pick California or Utah.

The fee is the same regardless of the neighbor you pick — it is just a matter of administrative convenience.

Operating in Multiple States

Where a carrier operates does not determine the base state — where the business is domiciled does. A carrier headquartered in Oklahoma that hauls into 30 states still has Oklahoma as its base state. UCR is federal; once you are registered, the record is recognized nationwide.

Changing Your Base State

You can change your base state only during annual renewal, not mid-year. Once a filing is submitted for the current year, that year's base state is locked. Most carriers keep the same base state year over year for the administrative continuity; changing it creates minor friction with state-specific audit trails but otherwise has no real cost or benefit.

Bottom line: 41 states participate. If you are in one of them, that is your base state. If you are not, pick a participating neighbor. The fee is identical either way.

Frequently Asked Questions

Which states participate in UCR?

Forty-one states are UCR participating states. The non-participating jurisdictions are Arizona, Florida, Hawaii, Maryland, Nevada, New Jersey, Oregon, Vermont, Wyoming, and the District of Columbia. Non-participating states do not collect UCR fees directly, but carriers based in those jurisdictions are still federally required to register — they choose a participating neighbor as their base state instead.

If I am based in a non-participating state, which state do I choose?

Any participating state, but the convention is to pick a neighbor so the administrative trail matches your geography. A Florida carrier typically chooses Georgia; an Oregon carrier typically chooses Washington or California; an Arizona carrier typically chooses California, Utah, or New Mexico. The choice does not change the fee — only which state’s UCR portal processes your paperwork.

Can I change my base state?

Yes, during your next annual renewal. You cannot change base state mid-year once a registration is filed. Most carriers keep the same base state year over year because changing it creates friction with state-specific audit trails and renewals.