What is a BMC-91 filing, and who files it?
The BMC-91 is the form your insurer, not you, files with FMCSA to prove you carry the public liability insurance your operating authority requires. You cannot file it yourself, and authority is not granted or kept without it.
Tell us the situation.
One licensed human replies the same business day — not five agents, not an auto-responder. If the policy you have is already the right one, we will tell you.
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Lori Adams, TRS
Commercial Trucking Insurance Advisor
Twenty-five years in trucking insurance. Knows the filings, the radius rules and the carriers that will actually take the risk.
Transportation Risk Specialist (TRS)
Send us what you have. We’ll tell you if it’s right.
Your current policy paperwork, a renewal notice, or nothing at all. A licensed agent reads it and replies the same business day.
The detail
Operating authority is issued only once the insurer’s BMC-91 or BMC-91X filing and a BOC-3 process agent designation are on file, and an applicant has 90 days from publication of the application to get both filed.
A BMC-91 always certifies the full federal minimum limit. A BMC-91X certifies either the full minimum or the specific limit shown on its face, which is what lets a primary insurer and an excess insurer each file for their own layer.
An insurer cancels a filing by giving FMCSA 30 days’ notice on Form BMC-35, and authority is revoked if no replacement filing is on file when that cancellation takes effect.
What this means for you
- A lapse is not a paperwork problem, it is an operating problem. Without a filing on file the authority goes inactive and the loads stop.
- Because the insurer files it, changing carriers is a sequencing exercise: the new filing has to land before the old cancellation takes effect, not after.
- Most agencies do not handle filings at all. Ask before you move a policy, not after the cancellation notice has gone in.
Related questions
- How long does a BMC-91 filing take to show up?
The filing is electronic and usually appears against your record quickly, but it is the effective date that matters rather than the date it was transmitted. A cancellation needs 30 days’ notice to FMCSA, so if one is already pending, the replacement has to be effective on or before that date.
- Can I file the BMC-91 myself to save time?
No. It is a filing made by an insurer authorized to do so, evidencing a policy that already exists. What you can do is make sure whoever handles your insurance actually does filings, because many do not.
Need this handled?
Reading about it and having it handled are different jobs, and the second one is ours. We place the accounts other brokers decline — claims history, a cancellation, an unusual operation, a business nobody wants to underwrite twice — and we will tell you when the policy you already have is the right one. Tell us the situation and a licensed human replies the same business day.
Written by the licensed brokers at Boring Insurance. Last updated 2026-10-04. See all guides.