How do I update my business address with FMCSA?

File an MCS-150 update through the FMCSA registration system (Motus, which replaced the legacy URS portal in May 2026). An address change is a routine MCS-150 update under 49 CFR §390.19T - there is no FMCSA fee for the update itself. Because address corrections sit outside the BOC-3 process entirely, a dedicated MCS-150 service handles them; the BOC-3 on file is untouched.

If my legal name changes at the same time as my address, do I need a new BOC-3?

Yes - but the trigger is the name change, not the address. File the MCS-150 to update both the legal name and the address with FMCSA first, then re-file the BOC-3 with the corrected legal name. Filing the BOC-3 before SAFER reflects the new name causes a name-mismatch rejection, so order matters: MCS-150 first, BOC-3 second.

Does moving to a new state change my BOC-3 process agents?

No. The BOC-3 names a process agent in every state where you operate or accept service - it is not tied to where your office sits. A blanket designation already covers all 50 states plus the District of Columbia under 49 CFR §366.4, so relocating your headquarters does not add or remove a process-agent line. You still report the new physical address on the MCS-150.

Do I Need a New BOC-3 After an Address Change? No

Do I need a new BOC-3 if I change my business address?

Last updated 2026-06-14By Korey Sharp-Paar, Founder & Lead Compliance SpecialistReviewed against 49 CFR §366.4 & §390.19T

No - changing your business address does not require a new BOC-3. An address change is reported to FMCSA on Form MCS-150 under 49 CFR §390.19T, not through the process-agent designation governed by 49 CFR Part 366. The BOC-3 names process agents who accept legal service of process in each state; that designation has nothing to do with where your own office or mailing address sits. Your existing BOC-3 stays valid as long as your legal name, USDOT number, and MC number do not change. A new BOC-3 is only triggered by a legal-name change, an MC-number change, switching process-agent providers, or your agent losing its FMCSA process-agent registration - never by a move.

Address change vs. BOC-3: what each record controls

Change	New BOC-3?	Correct filing	Authority
Business / mailing address	No	MCS-150 update	49 CFR §390.19T
Relocate to a new state	No	MCS-150 update	49 CFR §390.201
Add tractors / hire drivers	No	MCS-150 update	49 CFR §390.19T
Legal business name change	Yes	MCS-150 first, then re-file BOC-3	49 CFR §366.4
MC number change	Yes	New BOC-3 under new MC	49 CFR §366.4
Switch / lose process agent	Yes	Replacement BOC-3	49 CFR §366.4

Sources: 49 CFR §390.19T & §390.201 (MCS-150 / address reporting); 49 CFR §366.4 (process-agent designation).

Why an address change does not touch the BOC-3

The BOC-3 exists for one purpose under 49 CFR §366.4: to put a designated process agent - a person or company physically present in a given state - on record so that lawsuits, subpoenas, and regulatory orders can be served on the carrier locally. That designation is anchored to the carrier's legal identity (name, USDOT, MC), not to the carrier's street address. When you move, the agents named on your BOC-3 are still exactly where they were and can still accept service. Nothing about the filing has become inaccurate, so FMCSA does not require - and will not expect - a re-file.

Carriers operating commercial motor vehicles cannot self-designate process agents in any case; only an FMCSA-registered blanket process-agent provider may submit the BOC-3 on their behalf. Brokers and freight forwarders without commercial motor vehicles may designate themselves in their home state under 49 CFR §366.4(b). Either way, the trigger for a re-file is a change to the designation itself, not a change to the carrier's mailbox.

What an address change actually requires: the MCS-150

A business or mailing address change is a routine MCS-150 update under 49 CFR §390.19T. The MCS-150 is the form that keeps your USDOT registration current - address, vehicle counts, driver counts, and the mandatory biennial update keyed to the last two digits of your USDOT number. If your address has changed, file the MCS-150 update; the BOC-3 on file stays as-is. Address corrections are handled by our sister service, FastMCS150Filing, which specializes in MCS-150 updates and reactivations - we keep FastBOC3 focused strictly on the process-agent designation.

The four real BOC-3 triggers

A replacement BOC-3 is required only when (1) your legal business name changes - the §366.4 designation is bound to the carrier name on file; (2) your MC number changes, typically after a revocation and re-application under a new docket; (3) you switch process-agent providers, where the new BOC-3 supersedes the old designation in SAFER; or (4) your current agent loses its FMCSA process-agent registration standing, leaving your designation orphaned. For the name-change case specifically, order matters: file the MCS-150 to update the legal name first, wait for SAFER to reflect it, then re-file the BOC-3 - filing in the wrong order produces a name-mismatch rejection. See switching or replacing a BOC-3 process agent for the replacement mechanics, and the full how to file a BOC-3 walkthrough if you are filing for the first time.

Note on insurance and address changes

Do not confuse the BOC-3 with proof of financial responsibility. Insurance filings (BMC-91/Form 91, BMC-34, etc.) live under 49 CFR Part 387 and are managed by your insurer, not your process agent. An address change does not by itself force a new insurance filing either, but your insurer should be notified separately so policy records match SAFER. The BOC-3 (49 CFR Part 366) and the insurance filing (49 CFR Part 387) are two distinct, independent records.

Frequently asked questions

Do I need a new BOC-3 if I change my business address?: No. Changing your principal place of business or mailing address does not require a new BOC-3. The BOC-3 designates process agents - people or companies who accept legal service of process in each state under 49 CFR §366.4 - and that designation does not depend on your own business address. An address change is reported to FMCSA on Form MCS-150 (the biennial update), per 49 CFR §390.19T and §390.201. Your existing BOC-3 stays valid as long as your legal name, USDOT number, and MC number are unchanged.
What actually triggers a new BOC-3 filing?: Only four things require a replacement BOC-3: (1) your legal business name changes, because the §366.4 designation is bound to the carrier name on file; (2) your MC number changes, typically after revocation and re-application under a new docket; (3) you switch process-agent providers; or (4) your current process agent loses its FMCSA process-agent registration standing, leaving the designation orphaned. None of those is an address change.
How do I update my business address with FMCSA?: File an MCS-150 update through the FMCSA registration system (Motus, which replaced the legacy URS portal in May 2026). An address change is a routine MCS-150 update under 49 CFR §390.19T - there is no FMCSA fee for the update itself. Because address corrections sit outside the BOC-3 process entirely, a dedicated MCS-150 service handles them; the BOC-3 on file is untouched.
If my legal name changes at the same time as my address, do I need a new BOC-3?: Yes - but the trigger is the name change, not the address. File the MCS-150 to update both the legal name and the address with FMCSA first, then re-file the BOC-3 with the corrected legal name. Filing the BOC-3 before SAFER reflects the new name causes a name-mismatch rejection, so order matters: MCS-150 first, BOC-3 second.
Does moving to a new state change my BOC-3 process agents?: No. The BOC-3 names a process agent in every state where you operate or accept service - it is not tied to where your office sits. A blanket designation already covers all 50 states plus the District of Columbia under 49 CFR §366.4, so relocating your headquarters does not add or remove a process-agent line. You still report the new physical address on the MCS-150.