(a) Each insurer that seeks payment of a Federal share of compensation under subpart H of this part shall retain such records as are necessary to fully disclose all material matters pertinent to insured losses and the Federal share of compensation sought under the Program, including, but not limited to, records regarding premiums and insured losses for all commercial property and casualty insurance issued by the insurer and information relating to any adjustment in the amount of the Federal share of compensation payable. Insurers shall maintain detailed records for not less than five (5) years from the termination dates of all reinsurance agreements involving property and casualty insurance subject to the Act. Records relating to premiums shall be retained and available for review for not less than three (3) years following the conclusion of the policy year. Records relating to underlying claims shall be retained for not less than five (5) years following the final adjustment of the claim.

(b) Each insurer that collects a Federal terrorism policy surcharge as required by subpart J of this part shall retain records related to such surcharge, including records of the property and casualty insurance premiums subject to the surcharge, the amount of the surcharge imposed on each policy, aggregate Federal terrorism policy surcharges collected, and aggregate Federal terrorism policy surcharges remitted to Treasury during each assessment period. Such records shall be retained and kept available for review for not less than three (3) years following the conclusion of the assessment period or settlement of accounts with Treasury, whichever is later.