Industry
Commercial insurance premiums after a claim: what changes and when
What actually happens to commercial insurance premiums after a claim: loss runs, experience modification, reserves, and the levers you still control at renewal.
What to take away
- A claim changes your price at renewal, not on the day you report it. The reserve is bookkeeping; underwriting is the decision.
- Workers compensation is the only common line with a published formula, the experience modification rate.
- Carriers read three to five years of loss runs, and claim frequency usually costs more than claim severity.
- The levers you keep are timing, class codes, deductible structure, reserve accuracy, and how early you market the account.
The report and the premium are separate events
Filing a claim does not change the premium on the policy in force. That policy was priced before the loss, and a carrier cannot re-rate it mid-term for a covered event. What the claim creates is a reserve, and reserves become underwriting data.
Claim to renewal pricing
- Loss reportedReserve opened, claim number assigned
- Claim paid or closedReserve finalized, loss run updated
- Renewal reviewClass codes, exposure base, deductibles
- New quoteCarrier's own view of the account
The reserve is the adjuster's estimate of the claim's final cost. It rises and falls as facts arrive. Only settlement or closure freezes the figure that follows you to renewal.
A claim closed with nothing paid can still sit on your loss runs if it was reported. Report what the policy requires, and nothing beyond that.
Report and premium are separate
| Stage | What changes | When it reaches pricing |
|---|---|---|
| Loss reported | Reserve opened, claim number assigned | Not on the current term |
| Claim paid or closed | Reserve finalized, loss run updated | Next renewal, and two to four after |
| Renewal review | Class codes, exposure base, deductibles | 60 to 120 days before expiry |
| New quote | Carrier's own view of the account | At binding |
Loss runs, reserves, and what an underwriter reads
Loss runs are the carrier's own record of your claims, and you are entitled to a copy. Ask at every renewal and check dates, claim numbers, paid amounts, and open reserves. Errors survive for years when nobody corrects them.
An open reserve with no activity reads as unresolved exposure. Ask the adjuster to review anything older than twelve months.
Experience modification rate explained
Workers compensation runs on a formula. In most states the rating bureau, commonly NCCI, compares your actual losses with expected losses for your class codes and payroll.
Experience modification rate
Mod rate
- 0.80
- 20 percent credit
- 1.00
- Average
- 1.20
- 20 percent debit
Effect
- 0.80
- 1.00
- 1.20
An experience modification rate of 1.00 is average. A 0.80 earns a 20 percent credit, and a 1.20 adds a 20 percent debit. A ballast factor inside the formula keeps one bad year from wrecking a small account.
No equivalent formula exists for general liability or property. Those renewals are a negotiation, which is why marketing the account matters more there.
What changes in general liability, property, and cyber
General liability is priced on revenue, class codes, and loss history. General liability insurance carries exclusions, so a claim that is denied still costs money to defend and still shows on the report.
Property pushes carriers into valuation questions. If the payout shows you insured below the coinsurance clause threshold, a penalty applies at the worst moment, and the renewal reflects it.
Business interruption claims run long because the payout depends on how fast trade returns. A reserve that stays open for a year signals unresolved exposure, and the next quote prices that uncertainty.
Cyber is the most questionnaire driven. Three separate rulebooks apply, and each one is held by a different office: your data, your sector, and the policy form.
A cyber insurance calculator takes the numbers you enter and returns a range, not a quote. Its honest use is comparison, one input at a time.
A renewal timeline you can work backward
Renewal timeline you can work backward
- 150 to 120 days before expiry, request loss runs in writing from the carrier and the broker.
- 120 to 90 days out, correct errors, question stale reserves, and update payroll, revenue, and vehicle schedules.
- 90 to 60 days out, submit identical information to the incumbent and at least two alternatives.
- 60 to 30 days out, price two deductible or self-insured retention options against cash flow.
- 30 days out, bind, confirm certificates, and diary the next loss run request.
Dates slip. A renewal checklist built as a calendar keeps each stage tied to the document it must produce.
Example: one $18,000 slip-and-fall claim
A restaurant reports a fall in the dining room and the adjuster opens an $18,000 reserve. The claim settles for $9,500 eight months later. At renewal, three years of loss runs show one claim and no open reserves.
The outcome is not automatic. A carrier with a good loss ratio on the account may hold pricing. A carrier already losing money on the class may ask for more. Taking the account to market tells you which one you have.
What you control before renewal
- Request loss runs in writing 150 days before expiry and verify every reserve line.
- Ask the adjuster to review reserves older than twelve months with no activity.
- Confirm class codes and exposure figures match how the business actually operates.
- Price two deductibles or self-insured retentions before accepting the incumbent's number.
- Check that any cyber incident was reported in the form the policy requires.
Small accounts feel a single claim most. Booth renter insurance in Ontario costs roughly $350 to $1,400 a year, and FSRA rules decide what the policy must cover, so one $2,000 claim can shift the price for years.
