BMC-91 vs BMC-91X 2026: Motor-Carrier Liability Filing, Cost & Cancellation
A motor-carrier public-liability guide — single-insurer BMC-91 versus layered BMC-91X, the BMC-90 / MCS-90 endorsement, federal floors, what it costs, how cancellation kills authority, and why this is not a BMC-84 broker bond. Independent editorial from O Trucking.
BMC-91
One Insurer, Full Amount
BMC-91X
Stacked / Excess Layers
MCS-90
Endorsement on the Policy
30 Days
BMC-35 Cancellation Notice
Ahmad Qazi
Founder & CEO, O Trucking LLC
Fact-Checked by O Trucking Dispatch Team
5+ years watching new MC numbers stall because the BMC-91 never hit L&I, or because someone bought a broker bond for a truck
Sources:
Written by Ahmad Qazi, founder of O Trucking LLC, drawing on 9+ years dispatching for owner-operators. Learn more about us.
O TruckingBMC-91 vs BMC-91X 2026
Key Takeaways
- BMC-91 = one insurer writes the whole public-liability amount. BMC-91X = stacked insurers, each filing a layer.
- MCS-90 / BMC-90 rides on the policy. BMC-91 / 91X is what FMCSA records on L&I.
- Federal floors are $750k / $1M / $5M under 49 CFR 387.9. Brokers often want $1M anyway.
- You do not e-file BMC-91. The insurance company does. A PDF COI is not the filing.
- BMC-35 cancellation is about 30 days. No replacement filing means authority dies.
- BMC-84 / BMC-85 is broker security. Wrong form for a trucking MC. See the bond-vs-trust guide.
Motor-carrier liability URL — not a broker bond, not cargo, not bobtail
What BMC-91 and BMC-91X Actually Are
A BMC-91 is FMCSA Form BMC-91, the Motor Carrier Automobile Bodily Injury and Property Damage Liability Certificate of Insurance. It is how an insurance company tells FMCSA that a named motor carrier has public-liability coverage at least equal to the federal floor. The public that gets hit by a truck does not collect on a BMC-91 PDF. They collect on the policy and, if needed, on the MCS-90 endorsement. FMCSA uses the certificate to keep for-hire authority turned on.
BMC-91X is the sibling form used when more than one insurance company is needed to reach that floor. The classic 2026 pattern is a primary auto-liability policy (often $1 million) plus an excess or umbrella policy that lifts the tower to $5 million for certain hazmat. Each company files a BMC-91X for its layer. FMCSA adds the layers. If the stack has a hole — primary cancelled, excess still showing — you do not have a legal filing. Searchers who type BMC-91 vs BMC-91X are usually trying to decode an L&I screen, not pick a cheaper product.
Related hubs, not clones: how to get MC authority, BMC-84 vs BMC-85, trucking insurance requirements, carrier insurance requirements, and new MC authority insurance. Those pages cover the application path, broker security, and premium shopping. This URL owns the liability certificate pair.
| Item | BMC-91 | BMC-91X |
|---|---|---|
| What it is | Single-insurer certificate of public liability filed with FMCSA | Certificate used when two or more insurers split the required amount |
| Who it is for | Motor carriers (for-hire interstate) meeting 49 CFR 387 | Same carriers when primary plus excess/umbrella is how they hit the floor |
| Who files | The insurance company via an FMCSA e-filer account | Each participating insurer files its own BMC-91X |
| Typical 2026 use | One policy writes the full $750k / $1M / $5M | Primary $1M plus excess to $5M hazmat, or similar stacks |
| Cancellation form | BMC-35, generally 30 days to FMCSA | BMC-35 on that layer; remaining layers do not magically refill the hole |
| Not this form | Not BMC-84, BMC-85, BMC-32 cargo, or bobtail | Same — excess liability is still public liability, not cargo or a broker bond |
BMC-90 / MCS-90 — The Endorsement, Not the Certificate
MCS-90 is the Endorsement for Motor Carrier Policies of Insurance for Public Liability under the Motor Carrier Act. Older ICC paperwork called a close cousin BMC-90. In 2026 conversations, BMC-90 and MCS-90 are the same idea: a mandatory endorsement the insurer attaches to the liability policy. It says that, as far as the public and FMCSA are concerned, the insurer will pay covered public-liability judgments up to the required amount even if the policy would have excluded the claim — for example an excluded driver or a radius warranty the carrier blew.
That overlay is why MCS-90 is not a gift to the motor carrier. The insurer can still seek reimbursement from you after it pays the public. MCS-90 protects people on the highway and keeps the federal scheme from being a paper tiger. It does not pay a cargo claim, a lumper invoice, or a broker who never got paid. It does not fill a bobtail gap when you are off-dispatch. Those products live on bobtail insurance and owner-operator insurance.
Ask for the MCS-90 on the specimen, not only a pretty COI
| Form | Job | Trap |
|---|---|---|
| BMC-91 | Certificate that one insurer covers the full public-liability amount | A PDF COI in your email is not this filing |
| BMC-91X | Certificate for each layer when coverage is split among insurers | Layers must add to the federal floor, not just look large |
| BMC-90 / MCS-90 | Endorsement on the policy that pays public-liability judgments | Does not pay cargo, broker claims, or bobtail gaps |
| BMC-35 | Cancellation of BMC-91 or BMC-91X (about 30 days notice) | Authority dies if nothing replaces it on time |
| BMC-84 / BMC-85 | Broker/forwarder $75k surety or trust | Wrong pile for a trucking MC number |
| BMC-32 / BMC-34 | Cargo endorsement / cargo certificate when required | Tiny federal cargo floor is not what brokers demand |
Federal Liability Floors the Certificate Must Hit
49 CFR 387.9 is the table. Most new dry-van, flatbed, and reefer motor carriers hauling general freight need $750,000 of public liability. Oil in the specified categories needs $1 million. Certain hazardous substances, poisonous-by-inhalation gases, and explosives in bulk need $5 million. The BMC-91 amount, or the sum of BMC-91X layers, has to meet that row. A state minimum of $300,000 on a box truck is not a substitute. GVWR and CDL class do not rewrite Part 387 once you are a for-hire interstate carrier.
Brokers and shippers routinely demand $1 million on the certificate even when FMCSA would accept $750,000. Amazon Relay, many 3PLs, and most load-board onboarding screens are $1 million shops. If you are going to buy $1 million anyway, a single BMC-91 at $1 million is cleaner than a $750,000 primary plus a thin excess just to look large. Hazmat that triggers $5 million is where BMC-91X stacks become normal because many primary markets cap at $1 million.
Cargo is a different certificate
What BMC-91 Coverage Costs in 2026
There is no public FMCSA menu price for BMC-91. The insurer files as part of writing the policy. Your cost is premium, deductibles, surplus-lines tax if the market is non-admitted, and any underwriting fee for the e-file. New one-truck MC numbers with a driver under 25, a thin MVR, or a reefer unit land at the ugly end of the range. Clean 35-year-old owner-ops with a day cab and local radius land better. Treat $12,000 to $25,000 a year as a planning band for primary liability on a new small authority, then get three quotes. Excess BMC-91X layers for $5 million hazmat are their own invoice.
Do not compare that number to a BMC-84 premium. A broker bond at 2% of $75,000 might be $1,500 a year. That is not truck insurance. Mixing the two is how Facebook groups bankrupt a first-year carrier: they budget the bond, skip the liability quote, then stall in pending-insurance status. Walk new MC authority insurance for shopping order, MC authority cost for the full stack, and CSA scores and insurance once you have a safety history.
What inflates the BMC-91 quote
Youthful drivers, accidents, radius over 500 miles, hazmat, tank, double trailers, operating from a high-theft ZIP, and a brand-new MC with no prior. Surplus lines will write you. They will not write you cheap. A BMC-91X excess layer does not fix a wrecked primary loss history.
What does not count as BMC-91
Occupational accident, non-trucking liability, physical damage, cargo, and a personal auto policy. NTL vs primary is a different fight — NTL vs primary liability. Lease-on operators often carry NTL while the motor carrier's BMC-91 is the public filing.
How the Filing Actually Gets to FMCSA
| Step | Do This | Skip This |
|---|---|---|
| 1. Finish MC / DOT paper | USDOT, MC application, BOC-3, UCR as required | Do not buy a BMC-84 because a Facebook group said bond |
| 2. Quote the right limit | $750k, $1M, or $5M from 49 CFR 387.9 plus shipper asks | A $300k state minimum is not FMCSA public liability |
| 3. Bind and endorse | Policy plus MCS-90 / BMC-90 on the liability form | A personal auto policy with a magnet |
| 4. Insurer e-files | BMC-91 or stacked BMC-91X hits L&I | You uploading a scan into the MC portal |
| 5. Confirm L&I | Active BI/PD line, amount, insurer name | SAFER snapshot as the source of truth |
| 6. Keep it alive | Pay premium; if you switch, new filing first | Cancelling Friday and shopping Monday |
Sequence matters. FMCSA will grant an MC number that still sits inactive until insurance, process agent (BOC-3), and any other holds clear. The BMC-91 is often the long pole. Underwriters want a USDOT and MC on the application. You want the e-file yesterday. Build a week of overlap into your launch, not a same-day fantasy. Confirm on Licensing and Insurance, not on a phone screenshot from a producer. SAFER Company Snapshot is a public view that can lag. Brokers who found you on the FMCSA new carrier list will still bounce you if L&I is blank.
- Single market: one admitted or surplus-lines company writes the full limit and files BMC-91. Simplest L&I screen.
- Layered market: primary plus excess. Each files BMC-91X. You own the arithmetic. If excess is $4 million over $1 million, the primary must actually be $1 million on file.
- Walk: anyone who says they will file BMC-91 after you dispatch the first load, or who hands you a BMC-84 receipt and calls it insurance.
Cancellation, BMC-35, and Dead Authority
Insurers cancel BMC-91 and BMC-91X by filing Form BMC-35 with FMCSA. The conventional notice period is 30 days. Non-payment, material misrepresentation, and underwriting exits all travel this pipe. When the date hits and no replacement certificate is active, FMCSA takes down the operating authority that depended on that insurance. Hauling for-hire after that is unauthorized operation, not a paperwork slap. Reinstatement after an insurance lapse is its own mess — see MC authority reinstatement.
Switching carriers is the same discipline as switching a BMC-84: new company files BMC-91 or BMC-91X, you watch L&I go active, then you let the old policy cancel. If you are on a BMC-91X stack, cancelling the primary without a new primary does not leave you with a magical $4 million excess that FMCSA will treat as $5 million. Excess follows primary. Replace the layer that is leaving, then cancel.
A mid-policy cancellation is an authority event
Why This Is Not BMC-84 vs BMC-85
BMC-84 vs BMC-85 is broker and freight-forwarder financial responsibility: a $75,000 surety bond versus a $75,000 trust so unpaid carriers have a well. This URL is motor-carrier public liability so the public has a well after a wreck. We will not reprint the bond-versus-trust table, the January 2026 trustee rules, or the seven-day replenish clock. If you hold both a carrier MC and a broker MC, you buy both stacks. Dual authority is not a discount.
Where to go after this page
Application order: how to get MC authority. Premium shopping: new MC authority insurance. Broker security if you also broker: BMC-84 vs BMC-85. If authority is already active and you need freight: dispatch.
New Carrier List, Brokers, and What L&I Must Show
Fresh MC numbers appear on FMCSA public extracts that brokers scrape. That is the FMCSA new carrier list workflow. Appearing on a list is not the same as an active BMC-91. Serious freight will not move until L&I shows BI/PD, process agent, and active authority. If a stranger offers a load the morning your MC posts, assume they did not read the insurance tab. Verify them the way you verify anyone — broker verification — and do not haul under a pending insurance hold.
Factoring companies and load boards read the same L&I fields. A BMC-91X stack that does not add up will fail onboarding as surely as a missing BMC-91. Name must match the legal entity on the MC. DBA games delay packets. If you change the named insured after a rewrite, make the filer send a corrected certificate, not a stapler.
Company drivers do not file BMC-91. The motor carrier does. Lease-on owner-operators typically ride the carrier's filing while they carry NTL or occupational accident for themselves. If you want your own MC, you want your own BMC-91. That is the line between leasing on and own authority vs leasing on.
What L&I should show
Active public liability, form type BMC-91 or BMC-91X, insurer name, amount at or above the 387.9 floor, effective date in the past, no pending BMC-35 that will fire next week. Cargo and surety rows are extra, not substitutes.
What a broker packet still wants
A certificate of insurance with additional-insured language, cargo limits they invented, and sometimes MCS-90 confirmation. That packet does not replace the FMCSA filing. Both can be true. Send the COI after L&I is green.
Common L&I Mistakes That Stall a New MC
The named insured on the BMC-91 must match the legal entity on the MC application. A DBA on the certificate and an LLC on the MC is a hold. Excess BMC-91X filed against a different USDOT than the primary is a hold. A producer who emails a certificate of insurance to you and never e-files is a hold that looks like progress. Watch L&I daily until BI/PD is green, then screenshot the date. Brokers who found you on the new-carrier extract will still bounce a pending line.
MCS-90 reimbursement is the part new owners skip in the binder meeting. If the endorsement forces the insurer to pay a claim the policy would have excluded, the insurer can come back to the motor carrier. That is not cargo. That is not a BMC-84 claim. Budget as if a radius warranty or an excluded driver could still cost you after the public is paid. Ask the underwriter to walk that sentence before you bind, not after a wreck.
Policy expiration without a rewrite is just a polite BMC-35. Calendar the renewal 45 days out. If you add a second truck, tell the filer — some markets need a revised certificate amount or a scheduled auto change that never makes it to FMCSA. Authority can look active on SAFER while L&I is already counting down a cancellation. L&I wins. Dispatch should see a copy of the active line, not a year-old PDF in a glove box.
Pending insurance on a brand-new MC
Do not cover a load. Factoring will not take the invoice. The shipper's packet is theater until FMCSA shows the BMC-91 or stacked BMC-91X. Call the filer, not the broker who is rushing you.
Rewrite mid-term
New insurer files first. Confirm the new BMC-91 amount meets 387.9. Then let the old BMC-35 run. A same-day cancel-and-rewrite is how people spend a weekend unauthorized.
Frequently Asked Questions
What is the difference between BMC-91 and BMC-91X?
BMC-91 is the FMCSA certificate of insurance when one insurer writes the entire public-liability amount your motor carrier authority requires. BMC-91X is the same certificate family used when two or more insurers stack layers — typically a primary policy plus an excess or umbrella policy — so each company files its own BMC-91X showing the portion it covers. The public never sees a different product on the highway. FMCSA sees whether the stacked certificates add up to the federal floor. A BMC-91X is not a cheaper BMC-91. It is a filing format for split coverage.
Do I file BMC-91 myself when I apply for MC authority?
No. Your insurance company (or its authorized FMCSA e-filer) transmits BMC-91 or BMC-91X to FMCSA Licensing and Insurance. You buy the policy, sign the MCS-90 / BMC-90 endorsement, and wait for L&I to show an active public-liability line. Applicants who upload a PDF of a certificate of insurance into the MC application portal have not filed BMC-91. The broker-bond stack (BMC-84 or BMC-85) is a different filing by a surety or trustee. Walk the MC process on how to get MC authority, then confirm the liability line on L&I before you dispatch the first load.
What is BMC-90 or MCS-90 and how does it relate to BMC-91?
MCS-90 (also called Form BMC-90 in older ICC-era language) is the endorsement attached to the auto-liability policy. It obligates the insurer to pay public-liability judgments for bodily injury, property damage, and environmental restoration even when a policy exclusion would otherwise apply — up to the federal minimum. BMC-91 / BMC-91X is the certificate FMCSA records. You need both: the endorsement on the policy, and the certificate on file. MCS-90 does not replace cargo insurance, bobtail, or a BMC-84 broker bond. It is a public-protection overlay, not a cargo claim form.
How much does BMC-91 insurance cost for a new motor carrier in 2026?
The FMCSA filing itself is not a separate public fee you pay on a government cart. The cost is the liability premium plus whatever your underwriter charges to e-file. New one-truck authorities commonly see annual primary-liability quotes in a wide band — often roughly $12,000 to $25,000+ depending on cargo, radius, driver age, MVR, and whether you need $750,000, $1 million, or $5 million. Excess layers that trigger BMC-91X add their own premium. A $750,000 BMC-91 for general freight is not a $75,000 BMC-84. Do not budget the broker-bond premium as if it were truck insurance.
How is BMC-91 cancelled and what happens to my MC authority?
The insurer (not you) files Form BMC-35, a cancellation of the BMC-91 or BMC-91X, with at least 30 days notice to FMCSA. When the cancellation date hits and no replacement BMC-91 or BMC-91X is on file, FMCSA revokes or suspends the operating authority that depended on that insurance. You cannot legally haul for-hire interstate freight on a dead liability filing. Replacement works the same as broker security: new insurer files first, L&I shows active, then the old policy comes off. Do not cancel coverage on a Friday and shop on Monday.
Is BMC-91 the same as BMC-84 or BMC-85?
No. BMC-91 / BMC-91X is motor-carrier public liability. BMC-84 is a $75,000 surety bond and BMC-85 is a $75,000 trust for property brokers and freight forwarders under 49 CFR 387.307. A BMC-84 does not pay a wreck. A BMC-91 does not pay a carrier you stiffed as a broker. If you applied for both carrier and broker authority, you need both stacks. The comparison of bond versus trust lives on BMC-84 vs BMC-85. This URL owns the carrier insurance filing.
What federal liability limits does BMC-91 have to show in 2026?
49 CFR 387.9 sets the floors: $750,000 for most for-hire property carriers of non-hazardous freight, $1 million for oil listed in 49 CFR 387.9, and $5 million for certain hazardous substances, poisonous gases, and explosives in bulk. Private carriers and some commodities sit on different rows of the same table. Your BMC-91 or stacked BMC-91X certificates must add up to at least that number. Brokers still demand $1 million on certificates even when the federal floor is $750,000. Meet the higher of FMCSA and the shipper.
How do I confirm a BMC-91 or BMC-91X is actually on file?
Open FMCSA Licensing and Insurance, search the MC or USDOT, and read the insurance tab. You want an active public-liability (BI and PD) line naming the insurer, the form (BMC-91 or BMC-91X), the amount, and an effective date. SAFER Company Snapshot lags L&I and is not the filing system. New-authority hunters scraping the FMCSA new carrier list still have to click through to L&I before they offer you freight. A paper COI emailed to a broker is not the FMCSA record.
Why This Is Its Own URL
Search intent is the carrier liability certificate, not a broker bond
BMC-91 vs BMC-91X is an L&I and underwriting query. BMC-84 vs BMC-85 is a $75k broker well. MCS-90 is the endorsement. GSC can have the cluster without cloning the bond page into this slug.
We dispatch carriers; we do not file BMC-91
Authority holders with active liability: /dispatch/. Still in the application: how to get MC authority. Brokers scraping new MCs: FMCSA new carrier list.
Authority Is Active — Need Freight, Not Another Form?
O Trucking dispatches motor carriers that already have MC authority and a live BMC-91 or BMC-91X on L&I. We do not sell insurance, file BMC-35, or issue broker bonds. If you are still in the application, finish the liability filing first.