FMCSA's insurance rules boil down to three questions: how much liability coverage does your operation require, which filing proves it, and what does the MCS-90 endorsement actually do? Here are the answers with the real numbers. This is the reference we wish existed when clients call us mid-application.

How much liability insurance does FMCSA require?

For most for-hire carriers hauling general freight in interstate commerce, the minimum is $750,000. Hazmat pushes that to $1,000,000 or $5,000,000 depending on the commodity, and light non-hazmat vehicles get a $300,000 floor. The minimums come from 49 CFR Part 387:

  • $300,000: for-hire carriers of non-hazardous freight in vehicles under 10,001 lbs GVWR (think hotshots and sprinter vans running for hire, though note most brokers still demand $1M).
  • $750,000: for-hire carriers of non-hazardous freight in vehicles 10,001 lbs and up. This is the number that covers the vast majority of trucking.
  • $1,000,000: carriers hauling oil, and certain hazardous materials and hazardous waste that don't hit the top tier.
  • $5,000,000: the serious hazmat tier, meaning hazardous substances in bulk (cargo tanks, hopper-type vehicles), Division 1.1/1.2/1.3 explosives, poison gas, and highway-route-controlled radioactive materials.

Two practical notes. First, these are minimums. The market runs on $1,000,000, because that's what brokers and shippers require regardless of what the regulation says. Second, these apply to interstate commerce, which includes loads that cross state lines even when your truck doesn't; purely intrastate operations answer to state rules instead (Texas carriers, we wrote yours up separately).

Which FMCSA filing do you need?

Each filing is your insurer (or surety) certifying something to FMCSA electronically. You never file these yourself. The map:

Filing What it proves Who needs it
BMC-91 Public liability (bodily injury/property damage) at the full federal minimum, one insurer For-hire motor carriers
BMC-91X Same public liability requirement, where coverage is split across insurers or written at specific limits For-hire motor carriers (the most common version in practice)
BMC-34 Cargo insurance ($5,000 per vehicle / $10,000 per occurrence) Household goods carriers only
BMC-84 A $75,000 surety bond guaranteeing carriers get paid Freight brokers and freight forwarders
BMC-85 The same $75,000 obligation, funded as a trust agreement instead of a bond Brokers/forwarders who'd rather post their own money

The one that surprises people: general freight carriers no longer have a cargo filing requirement. FMCSA eliminated it in 2011. You still need cargo insurance to get loaded (brokers typically require $100,000), but that's a market requirement, not a filing. The BMC-34 survives only for household goods movers.

The other one: the broker bond is not insurance. If you get your own brokerage authority alongside your carrier authority, the BMC-84 is a $75,000 guarantee that you'll pay the carriers you broker to, and if the surety pays a claim, they collect from you.

What is the MCS-90 endorsement, really?

Attached to your policy is an endorsement called the MCS-90. Truckers often assume it's extra coverage for them. It isn't. The MCS-90 is a promise to the public, required by federal law: it guarantees that a member of the public injured by your operations gets paid up to the federal minimum, even if the policy would otherwise deny the claim (wrong truck listed, an excluded scenario, a reporting gap).

Here's the sting: when the MCS-90 pays a claim the underlying policy didn't actually cover, the insurer has the right to come after you for reimbursement. Read that again. The endorsement satisfies the federal financial-responsibility rule, but your actual protection is the policy underneath it, which is why keeping your equipment schedule, drivers, and radius accurately reported is not paperwork trivia. It's the difference between a covered claim and a six-figure debt to your own insurance company. Full breakdown in primary liability, explained like a human.

When does the filing happen, and when does it stop mattering?

The filing gates your authority at both ends of its life:

  • Activation: FMCSA won't grant authority until the liability filing and your BOC-3 are on file and the 21-day protest period has run. The filing typically posts to FMCSA's system within a day or two of your policy binding.
  • Cancellation: if your policy cancels for any reason (including non-payment), the insurer files notice with FMCSA, and after 30 days your authority is revoked. Reinstatement costs money and time, and brokers who monitor your authority will drop you the day it flags.

You can verify your own filing status the same way brokers do. Look yourself up by DOT number and check what FMCSA shows on file.

Quick answers to the questions we get weekly

Do I need $750k or $1M? Legally $750k (general freight, over 10,001 lbs). Practically $1M. Brokers require it and the premium difference is smaller than you'd think.

Does my private fleet need filings? Private carriers (hauling your own goods) don't need operating authority or BMC filings, though hazmat private carriers still must carry the required limits and the MCS-90 obligations attach.

Is a certificate of insurance the same as a filing? No. A COI is proof for brokers and shippers; the BMC filing is a separate electronic certification to FMCSA. You need both, from the same policy.

Who files the BOC-3? Your process agent company. It's a separate requirement from insurance. The full first-year stack is in Permits & compliance 101.

How McClure helps

Filings are the part of this we own: when we write your policy, we make the BMC-91X (and BMC-34 where it applies) so your authority activates on time and stays active. Because we're independent, we also make sure the policy under your MCS-90 actually matches how you operate: right units, right radius, right commodities, since that's what determines whether a claim is covered or clawed back. New authority or switching carriers, start your application here and we'll handle the federal side.