Flood insurers, ranked on what they write

These ceilings are set in the statute that created the program, not by the company that sells you the policy. A homeowner whose rebuild cost runs past $250,000 is uninsured above that line unless private cover sits on top of it.

This is an ordering by premium volume, taken from NAIC data as published, and nothing else. It is not a service ranking and it does not separate personal cover from commercial cover, because the NAIC table it comes from does not separate them either.

The federal program is the market. As of December 31, 2025 it held 4.57 million policies and more than $1.3 trillion of cover in force across more than 22,000 communities, on about $4.6 billion a year in premiums, fees and surcharges. Forty-seven Write Your Own companies service roughly 87.6 percent of those policies. What none of them control is the price. The Congressional Research Service puts it flatly: with either the direct servicing agent or the Write Your Own program, the NFIP underwrites the policy, and the policy terms and premiums are the same. Shopping four agents for a federal flood policy gets you four quotes for the identical contract at the identical price.

The private column is the one worth shopping, and it is small. Private carriers wrote $1.416 billion in direct flood premium in 2023 against the program’s billions, and the ten groups above hold most of it. Their ranking is size. It says nothing about whether any of them pays a claim well, and this page will not pretend otherwise.

The coverage ceilings and the 30-day wait come from the statute itself, 42 U.S.C. 4013, in the text current in August 2026. The five-units-and-up row is not spelled out in the section of statute above and comes instead from the Congressional Research Service summary of the program, R44593, updated April 7, 2026, which is also the source for every program-wide count on this page and for the quotation about identical terms and premiums. Market shares are the NAIC private flood figures for 2023 as published by the Insurance Information Institute, sourced from S&P Global Market Intelligence.

One column is missing on purpose. The source table also prints a direct-premium figure for each group, but the unit sits in a footnote that did not render on the page as loaded, and a dollar figure whose unit cannot be confirmed is not a figure. The share column carries the same ordering without that risk.

There is no flood equivalent of the studies that order the other ledgers on this site. J.D. Power publishes no flood insurance study. Its United States insurance work covers auto, home, individual life and claims satisfaction, and this page does not swap in the property claims study as a stand-in, because that study measures homeowners claims and a homeowners policy is the thing that excludes flood.

Nor is there per-carrier flood claims data. FEMA publishes its full NFIP claims file openly, down to the census block, and every record is stripped of the company that handled it. There is no Write Your Own identifier in the file, so no one outside the agency can say which of the 47 companies pays well and which does not. The NAIC collects the right measure for the flood line in its Market Conduct Annual Statement, including claims closed without payment, and publishes the 2025 private flood scorecard with 49 of 52 jurisdictions blank because three or fewer companies reported. Until that changes, a flood service ranking would be a guess dressed as a table.