Fla. Stat. § 627.06291

A residential property insurer shall return all excess profits to policyholders except as otherwise directed by the Office of Insurance Regulation. A residential property insurer shall be deemed to have earned an excess profit if its surplus exceeds its direct probable maximum loss for a 1-in-250-year return period and it has earned a net underwriting gain in Florida in excess of 10 percent of earned premiums above its anticipated underwriting profit over the most recent 10-year period.