Fla. Stat. § 627.4615

When a policy provides for payment of its proceeds in a lump sum upon the death of the insured, the payment must include interest, at an annual rate equal to or greater than the Moody’s Corporate Bond Yield Average-Monthly Average Corporate as of the day the claim was received, from the date the insurer receives written due proof of death of the insured. If the method of calculating such index is substantially changed from the method of calculation in use on January 1, 1993, the rate must not be less than 8 percent.