Interstate or intrastate: why the label changes everything
Before you buy a policy, you need to answer one question honestly: does freight ever cross a state line, or does it stay entirely inside one state? That answer decides who regulates you, which number you carry, which filing proves your coverage, and what your minimum limits actually are. Get the label wrong and you can end up under-filed, under-insured, or both.
This is general education on how the two authority types differ, not legal advice. Your specific setup (freight type, home state, and how often you actually cross a line) should get checked against your state's rules and FMCSA's before you commit to either path.
What makes an operation "interstate"?
Interstate commerce is broader than most new owners expect. It's not just "I drive across state lines." FMCSA counts a load as interstate if the trade, traffic, or transportation crosses a state line at any point, even if your truck personally never leaves the state. A load that starts in-state but is part of a shipment moving to or from another state can count as interstate.
Interstate carriers answer to FMCSA:
- You need operating authority, granted as an MC number, on top of your USDOT number.
- Your liability minimum is set federally under 49 CFR Part 387, generally $750,000 for most for-hire freight, with hazmat pushing to $1,000,000 or $5,000,000 depending on the commodity. Full breakdown in our FMCSA insurance requirements reference.
- Your insurer files proof of that coverage directly with FMCSA on a BMC-91 or BMC-91X. Until that filing is on record (along with your BOC-3 and the 21-day protest period), your authority doesn't activate.
Get your interstate liability filing started
What makes an operation "intrastate"?
Intrastate means every load starts and ends inside the same state, and nothing about the shipment continues on to another state. If that's genuinely your whole business, you're not regulated by FMCSA's operating authority rules at all. You're regulated by your own state's DOT or equivalent agency instead.
That changes the paperwork completely:
- No MC number. Most states still require their own intrastate registration or permit, tied to your USDOT number, but it's a state process, not an FMCSA one.
- No BMC-91 filing to FMCSA. Instead, your state sets its own filing requirement, often a state-specific insurance form (many states use a version of the same certificate concept, filed with the state rather than FMCSA).
- Minimum liability limits vary by state, and they don't automatically match the federal $750,000 number. Some states mirror the federal minimum, some set it lower, and some set it higher depending on vehicle weight or cargo type. There's no single number to assume; you have to check the requirement where you're actually registered.
Because intrastate rules live at the state level, they can also carry state-specific wrinkles: different weight thresholds, different treatment of hazmat, different renewal cycles. That's part of why we always confirm the actual filing requirement with your state before quoting, rather than assuming it mirrors federal rules.
Same truck, two very different filing paths
Picture two operators with an identical truck and trailer. One runs freight that regularly crosses into a neighboring state; the other stays entirely within state lines. On paper their equipment looks the same, but their compliance stack doesn't:
| Interstate | Intrastate | |
|---|---|---|
| Regulated by | FMCSA (federal) | State DOT / equivalent agency |
| Authority number | MC number + USDOT | USDOT (+ state permit, where required) |
| Liability filing | BMC-91 / BMC-91X to FMCSA | State-specific filing, varies by state |
| Minimum limits | Federal, generally $750k+ | Set by the state, varies |
| Who else touches it | Insurer files with FMCSA | Insurer files with the state |
The insurance policy underneath can be structured to satisfy either path, but the filing, the paperwork, and the number you're carrying it under are not interchangeable. An MC number doesn't mean anything to a state intrastate desk, and a state filing doesn't satisfy FMCSA if a load of yours ends up crossing a line.
The common path: start intrastate, add interstate later
It's common, especially for newer operators building a local or regional customer base, to run intrastate-only for a while and then add interstate operating authority once the business needs it, a shipper wants freight moved out of state, or growth naturally pulls loads across a line. That's a legitimate way to grow into it, but it's not automatic. Adding interstate authority means going through the MC number application, the BOC-3, and the BMC-91 filing from scratch, on top of (not instead of) whatever intrastate registration you already hold if you still run local loads too. Our new authority insurance requirements piece walks through exactly what FMCSA is waiting on when you make that move.
The flip side matters just as much: if you're running under intrastate-only registration and even one load's origin or destination steps outside your state, that load is arguably interstate, and you're not properly authorized or filed for it. This is the mistake we see most often, an operator assumes "we mostly stay local" is close enough. It isn't. The rule runs on the individual shipment, not your general pattern of operation.
Talk through your interstate or intrastate setup
What to check before you commit to either
- Be honest about your actual freight pattern, not your intent. If any load's origin, destination, or through-movement touches another state, treat it as interstate for filing purposes.
- Confirm your state's intrastate minimum directly rather than assuming it matches the federal $750,000 figure. It may be lower, higher, or tied to vehicle weight in ways the federal rule isn't.
- Line up the full registration stack, not just insurance. Authority type affects USDOT registration, IRP, IFTA, and other filings too. Our permits and compliance 101 guide covers the full first-year checklist in order.
- Revisit the question as you grow. An intrastate fleet that starts taking occasional out-of-state loads needs to update its authority before those loads happen, not after.
How McClure helps
We write both sides of this: interstate liability policies with the BMC-91X filing to FMCSA, and intrastate coverage structured to your specific state's filing and minimum limit. Since we're independent, we'll tell you plainly which path actually fits how you run freight today, and what changes if that expands. Start with the application here; it's the same information either path needs, and we'll sort out the filing from there.