Two owner-operators with identical trucks can pay thousands apart, and it's rarely about the truck. Commercial truck insurance is priced on how likely you are to have a claim and how big it might be, and underwriters read that from a specific set of signals. Here's what actually moves your rate, starting with the one that blindsides people and then working down by weight, and whether you can change each one or just have to wait it out. Once you know the factors, here's how to lower your premium.

The silent killer: your credit

Every factor below this one, you can see coming. Credit is the exception, and it is the reason more clean-record operators get a bad quote than any other single input nobody warned them about.

What insurers pull is a credit-based insurance score. It is not your FICO, it is not on your credit report, and you will never see it broken out as a line item on a quote. It is built from your credit file and weighted toward what predicts claims rather than what predicts loan default, so paying off a truck note does not necessarily move it. You get a number back, nobody tells you credit was in it, and it looks like the underwriter just did not like your operation.

Who leans on it hardest. The large national writers, Progressive, Berkshire Hathaway (BHHC), and GEICO among them, tend to weight credit the heaviest. Their models are built to price big books of business fast, and credit is a cheap, data-rich signal that fits that. A rough credit file can push a quote from one of them noticeably higher even with a spotless MVR and zero claims.

Who does not. Plenty of the non-standard and specialty trucking markets either skip credit entirely or weight it far behind driving record and loss history. Same driver, same truck, same radius, materially different number. That gap is why a "go away" price from a household name is not the market's answer, just one model's. More on that in why one company's high quote isn't the whole market.

A handful of states also restrict or ban credit in insurance rating, so how much any of this touches you depends partly on where you are based. The full breakdown, including what actually improves the score, is in does your credit score affect truck insurance.

The honest caveat: credit nudges the number, it does not override the record. A genuinely rough MVR does not get rescued by good credit, and a genuinely clean operation is still a clean operation with bad credit. It just quietly costs you at the wrong carriers. That is why it belongs first here, and why the three below still carry more total weight.

Naming those companies is about where credit sits in their pricing models, not a knock on any of them. We are appointed with plenty of them, and for the right operation they win the business outright.

The big three on your record

  • Driving records (MVRs). The most heavily weighted factor for most operations. Tickets, at-fault accidents, and violations on any driver you run price straight into your premium, and they linger for years. This is why a clean record is worth more than almost any coverage tweak.
  • Radius of operation. How far you run is one of the largest single levers. Local and short-radius work is priced well below long-haul, because exposure and severity climb with distance. A 50-mile dump operation and a 48-state reefer are different animals to an underwriter.
  • Loss history. Your last three to five years of claims follow you from insurer to insurer. A clean loss run is one of the best assets you can bring to a renewal; a claims-heavy one is the hardest thing to outrun.

Get a quote priced on your real operation

The factors that shape the number next

  • Experience and time in business. A brand-new authority pays for having no track record, no matter how good the driver is. Years under your own authority steadily lower the rate. Here's why new authorities pay so much.
  • Commodity hauled. What's on the trailer matters. General freight is priced below high-theft targets (electronics, pharma) and specialized loads. Reefer and hazmat carry their own exposure and their own price.
  • Vehicle type and value. Physical damage scales with the truck's stated value, and some equipment (dump trucks, tankers, car haulers) carries more liability exposure than a dry-van tractor. See how it varies by operation.
  • Coverage limits and deductibles. Higher liability and cargo limits cost more; higher deductibles cost less. The goal is matching them to what your contracts require and what you could actually absorb.

The quieter inputs

  • Driver age and CDL history. A very young driver, or a brand-new CDL, prices higher regardless of the clean record, because the data behind those groups is worse.
  • Garaging location and state. Where the truck is based and plated affects the rate, litigious metros and high-claim states cost more than rural bases.
  • Continuous coverage. A history of staying insured without gaps reads as lower risk and protects your pricing.

What you can change vs. what you wait out

You can change your radius rating, limits, deductibles, and how you shop it today. You mostly wait out experience, new-authority status, and past claims, they improve with clean time, not with a phone call. Knowing which is which keeps you from chasing the levers that won't move and ignoring the ones that will.

Credit is the odd one out, because it sits in both columns. The score itself you wait out, it moves on normal credit hygiene and on a lag. But the cost of it you can fix this week, by getting quoted through markets that weight it lightly instead of the ones that weight it hardest. That is the rare factor where shopping beats waiting.

See what you'd pay at a market that weights credit lightly

How McClure helps

We quote your operation on its real inputs, radius, commodity, experience, and records, then put it in front of multiple trucking markets so the number reflects you instead of a worst-case assumption. Get a quote priced on your real operation, and if you're shopping a renewal, send your current declarations so we know exactly what to beat.