A.M. Best Rating — an evaluation published by A.M. Best Company of all life, property, and casualty insurers domiciled in the United States and U.S. branches of foreign property insurer groups active in the United States. The ratings are often used to determine the claims-paying ability, suitability, service record, and financial stability of insurance companies. Other rating agencies include Standard & Poor's, Conning & Company, Fitch, and Moody's.