Description: This paper presents a policy-year model for GAAP valuation of reinsurance accepted on the coinsurance and modified coinsurance bases. Also presented are the interrelationships between the model's methodology and statutory accounting procedures, a discussion of experience-refunding situations, and a demonstration of the model's ability to yield GAAP profits as a level percentage of premium. From Transactions of Society of Actuaries 1981, Vol. 33.