FMCSA requires a $750,000 minimum combined single limit of primary liability for most for-hire trucking under 49 CFR §387.9 — but almost nobody in California actually operates at that number, because freight brokers and shippers write $1,000,000 into their contracts. The federal floor and the market floor are two different things, and understanding the gap between them is the difference between having authority and having freight.
The second thing new carriers get tangled in is paperwork vocabulary. The MCS-90 and the BMC-91 sound like versions of each other. They are not. One is an endorsement attached to your policy; the other is a filing your insurer sends to FMCSA. Most interstate operations carry both, and they do completely different jobs.
How much liability does FMCSA actually require?
For general freight moved in vehicles with a gross vehicle weight rating of 10,001 pounds or more, 49 CFR §387.9 sets the minimum at $750,000 combined single limit. The schedule steps up from there based on what you haul: $1,000,000 for oil and petroleum-based products transported by for-hire carriers, and $5,000,000 for certain hazardous materials, hazardous substances and hazardous wastes. Smaller vehicles under 10,001 pounds GVWR hauling non-hazardous property sit at a $300,000 minimum.
Those are federal minimums for interstate for-hire operations. They are not a recommendation, and they are not what your risk actually looks like. A single serious injury claim involving a commercial vehicle can exhaust $750,000 in medical specials alone before anyone talks about pain and suffering, lost wages, or the other vehicle.
Why do shippers and freight brokers demand $1 million anyway?
Because their own contracts require it. The standard broker-carrier agreement and the standard shipper packet almost always specify $1,000,000 combined single limit auto liability, $100,000 cargo, and frequently $1,000,000 general liability with the broker named as certificate holder. That is a contractual condition of getting the load, and it has nothing to do with federal regulation.
The practical effect: $1,000,000 is the real minimum in California trucking, and $750,000 is a technicality. Carriers who buy to the federal floor to save money in month one usually end up endorsing up to $1,000,000 within weeks, once the first broker packet comes back rejected — and mid-term changes are a worse way to buy insurance than getting it right at binding.
The federal government sets the floor at $750,000, but the freight market sets it at $1 million, and the freight market is the one that pays you.
MCS-90 vs. BMC-91 and BMC-91X: what is each one?
The MCS-90 is an endorsement attached to your insurance policy. It makes the insurer responsible for paying a judgment for public liability — bodily injury, property damage, environmental restoration — up to the required limit, even in situations where the underlying policy might not otherwise respond, such as an unscheduled vehicle or a coverage dispute. It is a financial responsibility backstop for the public, not extra coverage for you: if the insurer pays under the MCS-90 when the policy would not have responded, the insurer has the right to seek reimbursement from you.
The BMC-91 and BMC-91X are filings, not coverage. They are the certificate of insurance your insurer transmits electronically to FMCSA to prove you carry the required limits. The BMC-91 is used when a single insurer provides the full required limit; the BMC-91X is used when the required limit is built from more than one policy or layer. You do not file these yourself — only an authorized insurer can, which is why binding coverage and getting the filing transmitted are one linked step, not two.
Most interstate for-hire operations end up with both: the MCS-90 endorsement sitting on the policy, and the BMC-91 or BMC-91X sitting in FMCSA’s system. If you want the endorsement explained on its own terms, see what an MCS-90 is and whether your operation needs it.
What about intrastate-only California operations?
If you never cross a state line, you are on the California side of the system instead of the federal side: you need a Motor Carrier Permit (MCP) issued through the California DMV, and your insurer files proof of insurance with the DMV rather than with FMCSA. California Vehicle Code §34631.5 sets the intrastate financial responsibility minimums, which follow a similar tiered structure by vehicle weight and commodity.
Two practical notes. First, intrastate-only is not automatically cheaper across the board, but the shorter radius usually helps the rate — intrastate packages commonly run $1,300–$2,000 per month for a single truck versus $1,700–$2,500 for interstate, driven by radius, commodity, driving record and equipment value. Second, we handle the insurance and the filing; permit issuance, renewal and any fees are decisions made by the DMV and FMCSA, not by us or by any broker.
What happens if your insurance filing lapses?
Losing the filing starts a clock that ends in revoked authority. When a policy cancels or non-renews, the insurer notifies FMCSA of the cancellation, FMCSA posts the pending revocation and gives a notice period — commonly around 30 days — for a replacement filing to be made. If no replacement filing arrives, the operating authority is revoked, and you are out of compliance the moment you keep running.
Getting reinstated is slower and more expensive than staying insured. You need a new policy, a new filing, and in many cases a reinstatement request — and underwriters treat a lapse as a real underwriting signal, which shows up in your renewal pricing long after the paperwork is fixed. The most common cause is not a business decision at all: it is a missed payment on a monthly plan during a slow freight month.
If you are sorting out limits, filings or a lapse notice, our commercial team works out of 956 W. Robinhood Drive, Stockton, CA 95207. Call (209) 670-1556 — most commercial trucking policies are quoted and bound by phone, because limits, filings and haul class need a real conversation rather than a web form. We work with commercial carriers in English and Spanish, and there are no broker fees on standard policies. Insurance City’s parent operation serves 4,500+ active customers across three California offices and wrote 2,080 new policies in 2025.
Frequently asked questions
Is $750,000 in liability enough for a California trucking operation?
It meets the federal minimum in 49 CFR 387.9 for general freight, but it is usually not enough commercially. Most freight brokers and shippers require $1,000,000 combined single limit in their contracts, so carriers at the federal floor often cannot book loads.
Is the MCS-90 the same thing as the BMC-91?
No. The MCS-90 is an endorsement attached to your policy that makes the insurer responsible for public liability judgments up to the required limit. The BMC-91 or BMC-91X is the filing your insurer transmits to FMCSA as proof you carry those limits. Most interstate carriers have both.
Do I need an MCS-90 if I only run inside California?
Generally no. Intrastate-only operations work through a California Motor Carrier Permit with proof of insurance filed with the DMV, under the financial responsibility limits in California Vehicle Code 34631.5, rather than through the federal MCS-90 and BMC-91 system.
How long do I have to replace a filing before my authority is revoked?
When your insurer notifies FMCSA of a cancellation, FMCSA issues a notice giving a limited window, commonly around 30 days, for a replacement filing. If nothing is filed in that window, the operating authority is revoked and reinstatement is required before you can legally run.
Related reading: More on limits, filings and what trucking coverage actually costs in California.
- What is an MCS-90 and does my trucking operation need it?
- New authority trucking insurance in California
- How much does commercial truck insurance cost in California?
- Cargo insurance explained for owner-operators
Insurance City Agency — 956 W. Robinhood Drive, Stockton, CA 95207 — (209) 670-1556. CA License #6003045.