Short answer
“A- VII or better” is a minimum carrier rating that many architect and engineer contracts require. It comes from A.M. Best, a rating agency that grades insurers on financial strength and size. The letter measures the insurer’s ability to pay claims, and the Roman numeral measures its size. Check the requirement before you bind a policy, not when your client asks for the certificate.
What A- VII or better means
The rating has two parts. “A-” is the financial strength grade, and “VII” is the financial size category. “Or better” means a carrier with a higher grade and a larger size category also qualifies.
Contracts use this language to make sure the insurer behind your policy can pay a claim years after the project ends. That matters for professional liability, where a claim can surface long after the work is done.
What is A.M. Best?
A.M. Best is a credit rating agency that focuses on the insurance industry. It reviews an insurer’s balance sheet, operating performance and business profile. It then assigns a rating that clients, lenders and brokers use to compare carriers.
What the letter grade tells you
The letter grade is the financial strength rating. It runs from A++ at the top down through A+, A, A-, B++ and lower grades. A- sits in the “Excellent” range.
When a contract asks for A- or better, a carrier rated A-, A, A+ or A++ qualifies. A carrier rated B++ does not, even though that grade is still considered strong.
What the Roman numeral tells you
The Roman numeral is the financial size category. It reflects the insurer’s policyholder surplus, which is the capital it holds beyond what it needs to pay expected claims. The scale runs from I, the smallest, to XV, the largest.
A rating of VII corresponds to a mid-sized insurer. A contract asking for VII or better accepts VII and every larger category. A carrier in category VI would fall short, even with a strong letter grade.
Where A- VII or better shows up in contracts
You will usually find this language in the insurance section of a prime agreement, a subconsultant agreement or a request for proposals. It often reads like this: “insurers must carry an A.M. Best rating of A- VII or better.”
The requirement can also appear in a client’s insurance guidelines or a certificate of insurance checklist. Some clients set a higher bar, such as A VIII, so read each contract on its own terms.
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Get a Quote →What happens if your carrier falls short
A carrier that misses the required rating may not satisfy the contract. The client could reject your certificate of insurance and ask you to fix the problem before work continues.
Fixing it can mean replacing the policy with one from a different carrier, which takes time and may affect pricing. Some clients grant exceptions, but you should not count on one without written confirmation.
A real-world example
A structural engineering firm wins a project with a contract that requires professional liability coverage from a carrier rated A- VII or better. The firm receives two quotes. Carrier one is rated A- VII. Carrier two is rated B++ VIII, with a slightly lower premium.
The second quote looks cheaper, but its letter grade falls below the contract minimum. If the firm binds it, the client may reject the certificate. Checking the rating before binding avoids that problem.
How to check a carrier’s rating
Ask your broker for the carrier’s current A.M. Best rating and look for it on the quote. You can also confirm it on the A.M. Best website. Ratings can change, so check the date of the rating, not only the grade.
Questions to ask before you bind
- Does the contract require a minimum A.M. Best rating?
- What is the carrier’s current rating, including both the letter and the Roman numeral?
- Does the contract also require an admitted carrier?
- Will the client accept a lower rating, and can they confirm it in writing?
- What happens to the rating requirement if the carrier is downgraded during the policy term?
Is A- VII or better a good rating?
A- is in the “Excellent” range, and VII shows a mid-sized insurer. Whether it is good enough depends on your contract. Some clients accept a lower rating and others ask for a higher one.
Can a carrier lose its rating during my policy term?
Yes. A.M. Best can upgrade or downgrade a carrier at any time. If your contract requires a minimum rating throughout the project, ask your broker what happens if a downgrade occurs.
Does a lower rating mean the carrier can’t pay claims?
Not necessarily. A lower grade reflects a rating agency’s view of the carrier’s financial position, not a prediction of failure. A contract can still require a higher grade, so the rating matters for compliance even when the carrier is financially sound.
Does A- VII or better apply to admitted and non-admitted carriers?
Yes. The rating applies to both. Some contracts add a licensing requirement as well, so check the carrier’s rating and its admitted status together.
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