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How insurers file rate increases with regulators
A rate filing is an insurer's request to change its prices. What goes into one, how regulators review it, how to read an average increase and where to find it.
A rate filing is a document an insurer sends to a state insurance department that sets out the prices it wants to charge for a line of insurance, such as homeowners, and the data and actuarial reasoning behind them. Depending on the state, the regulator must approve it before it takes effect, or may only review it after the insurer starts using it. Either way, the filing is what turns the company's cost projections into your renewal premium.
Your bill is not set by one number. It is the product of a base rate, a series of rating factors and a few adjustments, and the filing may change any of them.
What is in a homeowners rate filing
Filings are technical, but they follow a predictable structure.
- The requested change. The overall average increase or decrease the insurer wants, often broken down by form (HO-3, HO-5, condo, renters), territory and sometimes by policy segment.
- Loss experience. Several years of premium, claims and expenses, usually trended to the future. This is where the loss ratio comes in.
- Catastrophe load. A charge for hurricane, hail, wildfire or other large events that happen only occasionally. Insurers typically rely on a catastrophe model to estimate this, because a few years of data cannot capture a one-in-a-hundred-year storm. See how catastrophe models shape your premium.
- Reinsurance cost. The price of the insurer's own insurance. Rising or falling reinsurance costs flow straight into the filing. See reinsurance costs and your premium.
- Expenses and profit. Commissions, overhead and a target return, both of which regulators scrutinize.
- Rating plan changes. New or revised factors for roof age, protection class, construction, deductibles, credits and discounts, plus any change to rating territories.
- Supporting exhibits. Actuarial memoranda and spreadsheets, and, in some states, a statement of why the change is needed.
Some filings are "rate filings" (the dollar level of rates). Others are "rule" or "form" filings (changes to underwriting rules or policy language). A single company often files several at once.
How regulators review one
The legal test, in almost every state, is whether rates are adequate, not excessive and not unfairly discriminatory. California's statute, for example, bars a rate that is "excessive, inadequate, unfairly discriminatory," and puts the burden of proof on the insurer (Ins. Code section 1861.05). Regulators' actuaries test the filing against that standard by:
- Checking whether the data is credible and the trends are reasonable.
- Testing the catastrophe and reinsurance assumptions.
- Looking for factors that could be discriminatory or violate a state ban, such as a restriction on insurance score use, where one exists.
- Asking questions. In many states the insurer answers by objection letter in the filing system, and the reviewed rate may be revised before approval.
How much power the regulator has before a rate takes effect depends on the state's rating law. That is the subject of prior approval vs file-and-use rate laws.
What the process looks like to a homeowner
In a prior-approval state like California, the commissioner must give public notice of each application. The filing is deemed approved 60 days after notice unless a consumer requests a hearing within 45 days, the commissioner orders one, or the increase tops 7 percent for personal lines (15 percent for commercial) and a hearing is requested. Any application is deemed approved 180 days after receipt unless it is disapproved after a hearing or extraordinary circumstances exist. Anyone may intervene, and the insurer pays awards to consumer advocates who make a substantial contribution (Ins. Code sections 1861.05 and 1861.10). Few states give consumers that much formal access.
In other states, the public may never see the filing unless it looks. Two practical points:
- Filings are searchable. The NAIC's SERFF system holds most filings, and many states offer public access through SERFF Filing Access on the department's website. Which documents appear varies; filings marked confidential can be withheld.
- The filing is not your rate. Your premium also moves with changes in your own rating factors, your coverage limits and your claims history.
Reading "average rate increase"
The headline number in a news story is almost always an average, and it hides a lot.
| What you see | What it can hide |
|---|---|
| "The insurer got an 8% increase" | Some policyholders may get 2% and others 20%, depending on territory, roof age and form. |
| "Statewide average approved increase of X%" | A mix across companies, large and small. |
| "Rates down 10%" | Changes in deductibles, coverage or underwriting rules may offset the decrease. |
Industry-wide numbers are better as context than as a prediction. AM Best put the average approved homeowners rate increase at 13.5 percent in 2024, roughly 8 percent in 2025 and 4.3 percent in the first half of 2026, as reported in September 2026. Reinsurance is a frequently cited driver, and Florida's June 1, 2026 reinsurance renewals were reported down roughly 15 to 25 percent. Your renewal can still rise even in a falling market because your own rating inputs changed. See why homeowners insurance keeps going up and your home insurance premium jumped: what to do.
A hypothetical walk-through
Say an insurer files for a 7 percent overall increase in a state. Its filing shows higher reinsurance cost, a trend in roofing and labor costs, and a smaller factor change. After the actuary's review, the department asks for support on the catastrophe load, and the insurer agrees to a 6 percent overall increase effective at renewals starting the next quarter. Your policy renews in two months. The overall change is 6 percent, but your roof is 18 years old and the filing changed the roof-age factor, so your own increase is larger. The renewal notice or the filing itself would show the change, and the home insurance renewal increase checker can help you test whether yours is out of line.
When you can act on a filing
- Find it. Search your state department's SERFF Filing Access portal by company name and homeowners line.
- Read the summary. The cover letter and rate/rule schedule usually state the average change and the effective date.
- Comment where allowed. Some states take public comment, and prior-approval states with hearings let you request one.
- Compare at renewal. You can shop elsewhere regardless of what the filing says. See shopping your policy at renewal: how often and how.
- Complain if something looks wrong. If a rating factor looks unlawful in your state, send a complaint to the department (how to file a complaint with your state insurance department).
Key takeaways
- A rate filing is an insurer's request to change prices, backed by loss, catastrophe, reinsurance and expense data.
- Whether the regulator approves first or reviews later depends on the state's rating law.
- An average increase hides large differences between policyholders; your own factors drive your bill.
- Most filings are public through SERFF Filing Access, with exceptions for confidential material.
- In prior-approval states like California, consumers can request hearings and intervene; in most other states, input is informal.