What is an MCS-90 endorsement?

The MCS-90 is an endorsement attached to a motor carrier's liability policy that guarantees the public will be paid for bodily injury or property damage from a negligent operation, up to the federal minimum, even if the underlying policy would otherwise not respond. It functions as a financial-responsibility safety net required for interstate for-hire carriers — not as first-party coverage for the carrier's own losses. If the insurer pays a claim under the MCS-90 that the policy would have excluded, the carrier must reimburse the insurer. [1]

What are the minimum liability limits for interstate trucking?

Federal minimums depend on what you haul. General freight is commonly $750,000 in combined bodily injury and property damage (BIPD); most shippers and brokers require $1,000,000. Carriers hauling oil, certain hazardous materials, or other regulated commodities face higher minimums, generally $1,000,000 to $5,000,000 depending on the commodity and quantity. Always confirm the figure for your specific operation and commodity. [1]

What is the difference between BMC-91 and BMC-91X?

Both are the public-liability (BIPD) insurance filings that prove a carrier meets the federal financial-responsibility minimum. They are filed by the insurer with the FMCSA on the carrier's authority. The BMC-91X is the more commonly used form. Cargo financial responsibility, when required, is filed on a BMC-34. Process-agent designations are filed on a BOC-3. [1]

What is a BOC-3 filing?

A BOC-3 designates a process agent in each state where the carrier operates — a party authorized to accept legal documents on the carrier's behalf. The FMCSA requires a BOC-3 on file before granting operating authority. It is typically filed through a blanket process-agent service rather than by the insurer. [1]

What is UCR and do I have to pay it?

The Unified Carrier Registration (UCR) is an annual federal registration and fee program for interstate carriers, brokers, freight forwarders, and leasing companies, with the fee tiered by fleet size. It is separate from your insurance filings, but lapsing on UCR can lead to enforcement just as a filing lapse can. We flag it so nothing falls through the cracks. [2]

Does Florida intrastate trucking need FMCSA filings?

FMCSA filings apply to interstate for-hire operations under federal authority. If you operate only within Florida, you generally follow Florida's financial-responsibility rules instead — Florida Statutes § 627.7415 sets combined liability minimums of $50,000 to $300,000 based on vehicle weight, and shipper contracts usually require more. We confirm whether you are interstate, intrastate, or both before assuming which rules apply. [3]

How does an authority lose its 'active' status?

The most common cause is an insurance filing lapse — if a policy cancels and the insurer files the cancellation, the FMCSA can revoke or deactivate the authority. New-authority carriers in their first year are especially exposed. We file MCS-90/BMC-91X promptly, monitor for cancellation notices, and coordinate reinstatement so a clerical gap does not shut down your trucks.

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Trucking · FMCSA Filings

FMCSA Filings & Federal Financial Responsibility

If you run interstate, your operating authority stays alive only while the right insurance filings are on record with the FMCSA. People blur four separate things together: operating authority, the liability minimums, the insurance filings that prove them, and the agents that accept legal service. Here is how each piece fits — and where carriers most often lose authority by accident.

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At a Glance

General freight min.: $750,000 BIPD
Hazmat min.: $1M – $5M
Key endorsement: MCS-90
Markets: 100+ carrier markets

Quick answer

FMCSA filings are how a motor carrier proves federal financial responsibility: the MCS-90 endorsement guarantees public liability, the BMC-91/91X confirms liability limits (commonly $750,000 to $1,000,000+), the BMC-34 covers cargo, and the BOC-3 designates process agents for legal service across all states. Miss or lapse any of these and your operating authority is deactivated. Ellie Insurance Group, an independent agency (founded 2014, Tampa, Florida) shopping 100+ carrier markets, places the underlying coverage and files the right forms so your authority stays active. Start an Instant Quote and a licensed agent handles your filings.

The four pieces

Authority, limits, filings, and process agents are separate

Most carrier confusion comes from treating these as one rule. They are four independent pieces — you can have one and still be out of compliance on another.

1 · Operating authority

Your USDOT number identifies the carrier; your MC/FF number is the for-hire operating authority. Authority must be granted and stay 'active' for you to run interstate for-hire loads.

2 · Liability minimums

Federal law sets the minimum bodily-injury and property-damage limit — commonly $750,000 for general freight, and $1M–$5M for oil and certain hazardous materials, by commodity.

3 · Insurance filings

Your insurer proves those limits to the FMCSA by filing the BMC-91/91X (public liability) and, where required, the BMC-34 (cargo). The MCS-90 endorsement rides on the policy itself.

4 · Process agents (BOC-3)

A BOC-3 names someone in each operating state who can accept legal service for you. The FMCSA requires it on file before authority is granted.

These pieces sit underneath every program in the trucking insurance lineup — from semi-truck primary liability to motor truck cargo.

The filings in plain English

What each FMCSA filing actually does

These are the federal filings and endorsements that prove financial responsibility. The insurer files most of them; the BOC-3 typically goes through a process-agent service.

MCS-90 endorsement
Rides on the liability policy. Guarantees the public is paid up to the federal minimum for a negligent operation, even where the policy might not respond — the carrier reimburses the insurer afterward.
BMC-91 / BMC-91X
The public-liability (BIPD) insurance filing the insurer submits to FMCSA proving you carry the required liability limit. The 91X is the form most commonly used.
BMC-34
The cargo financial-responsibility filing, required for certain household-goods carriers and where otherwise mandated.
BOC-3 (process agents)
Designates a party in each operating state authorized to accept legal documents on your behalf. Required before authority is granted.
UCR registration
Annual interstate registration and fee, tiered by fleet size — separate from the insurance filings but enforced alongside them.
USDOT & MC/FF numbers
USDOT identifies the carrier for safety; the MC/FF number is the for-hire operating authority that must stay active.

Interstate vs. Florida intrastate

Which rules apply to your operation

The filings above are federal and apply to interstate for-hire carriers. Florida-only operations follow state financial-responsibility law instead — and many carriers do both.

Interstate for-hire

Crossing state lines for-hire triggers FMCSA authority, the federal liability minimum, BMC-91/91X and MCS-90, BOC-3 process agents, and UCR.

Florida intrastate

Operating only within Florida follows § 627.7415 — combined liability minimums of $50,000–$300,000 by vehicle weight. Most shipper contracts still require $1M CSL.

Mixed operations

Many Florida carriers run both. The safe default is to carry contract-grade limits and keep federal filings active so a cross-border load never catches you short.

Where carriers lose authority

Common FMCSA compliance gaps

Letting a liability policy cancel — the insurer files the cancellation and the authority can be revoked
Assuming the MCS-90 is first-party coverage for your own truck or cargo (it is not)
Carrying $750K when shipper and broker contracts require $1,000,000
Hauling a regulated commodity at the general-freight minimum instead of the higher hazmat figure
Operating interstate while still on Florida intrastate limits
Missing the annual UCR registration and triggering enforcement
Running new authority in year one without monitoring filings for a lapse

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What Ellie needs to file and shop your authority

Quote checklist

Submission essentials

Legal entity name, DBA, USDOT and MC/FF numbers, and authority status
Whether you operate interstate, Florida intrastate, or both
Commodities hauled and whether any are hazardous or regulated
Power-unit and trailer schedule with VINs and stated values
Driver list with CDLs, dates of birth, hire dates, and MVRs
Radius of operation and primary lanes
Current declarations pages and any active FMCSA filings
Currently valued loss runs for the prior 3–5 years

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Sources & disclaimer

How to verify this for your operation

This page is general information for motor carriers, not legal or compliance advice. Federal minimums, filing forms, and registration fees change, and individual broker and shipper contracts can require higher limits than the law. Confirm your specific obligations with the agencies below and review the actual contract before you haul.

[1] Federal financial-responsibility minimums, MCS-90, BMC-91/91X, BMC-34, and BOC-3 — Federal Motor Carrier Safety Administration (FMCSA), insurance and process-agent requirements. fmcsa.dot.gov — insurance requirements
[2] Unified Carrier Registration (UCR) annual registration and fees — Unified Carrier Registration Plan. ucr.gov
[3] Florida intrastate motor-vehicle financial responsibility — Florida Statutes § 627.7415. flsenate.gov — § 627.7415

Requirements may change; verify current rules with the FMCSA, the UCR Plan, and your state regulator. Sources last reviewed June 2026.

FAQ

Frequently Asked Questions

The MCS-90 is an endorsement attached to a motor carrier's liability policy that guarantees the public will be paid for bodily injury or property damage from a negligent operation, up to the federal minimum, even if the underlying policy would otherwise not respond. It functions as a financial-responsibility safety net required for interstate for-hire carriers — not as first-party coverage for the carrier's own losses. If the insurer pays a claim under the MCS-90 that the policy would have excluded, the carrier must reimburse the insurer. [1]
Federal minimums depend on what you haul. General freight is commonly $750,000 in combined bodily injury and property damage (BIPD); most shippers and brokers require $1,000,000. Carriers hauling oil, certain hazardous materials, or other regulated commodities face higher minimums, generally $1,000,000 to $5,000,000 depending on the commodity and quantity. Always confirm the figure for your specific operation and commodity. [1]
Both are the public-liability (BIPD) insurance filings that prove a carrier meets the federal financial-responsibility minimum. They are filed by the insurer with the FMCSA on the carrier's authority. The BMC-91X is the more commonly used form. Cargo financial responsibility, when required, is filed on a BMC-34. Process-agent designations are filed on a BOC-3. [1]
A BOC-3 designates a process agent in each state where the carrier operates — a party authorized to accept legal documents on the carrier's behalf. The FMCSA requires a BOC-3 on file before granting operating authority. It is typically filed through a blanket process-agent service rather than by the insurer. [1]
The Unified Carrier Registration (UCR) is an annual federal registration and fee program for interstate carriers, brokers, freight forwarders, and leasing companies, with the fee tiered by fleet size. It is separate from your insurance filings, but lapsing on UCR can lead to enforcement just as a filing lapse can. We flag it so nothing falls through the cracks. [2]
FMCSA filings apply to interstate for-hire operations under federal authority. If you operate only within Florida, you generally follow Florida's financial-responsibility rules instead — Florida Statutes § 627.7415 sets combined liability minimums of $50,000 to $300,000 based on vehicle weight, and shipper contracts usually require more. We confirm whether you are interstate, intrastate, or both before assuming which rules apply. [3]
The most common cause is an insurance filing lapse — if a policy cancels and the insurer files the cancellation, the FMCSA can revoke or deactivate the authority. New-authority carriers in their first year are especially exposed. We file MCS-90/BMC-91X promptly, monitor for cancellation notices, and coordinate reinstatement so a clerical gap does not shut down your trucks.

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Sources

Authoritative references

Coverage descriptions and regulatory figures on this page are general summaries reviewed against the references above and are not a statement of coverage, legal advice, or a guarantee of eligibility or price. Last reviewed June 30, 2026. Requirements and policy terms change — always confirm current rules with the relevant agency and verify coverage against the actual policy and a licensed agent.

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