When you’re looking through different annuity selections with your financial advisor or consultant, knowing which insurance offer to trust makes a big difference. Credit rating agencies rate insurance companies with a grade or percentage. This score assigned to each independent insurance agency indicates that company’s ability to pay policyholders’ claims. The Big Four: A.M. Best, Comdex, Moody’s, and Standard & Poor’s Financial rating services such as A.M. Best, Comdex, Moody’s, and Standard & Poor’s rank insurance companies based on their financial strength and stability. Before you invest in an annuity, check that annuity’s insurance provider’s ranking. These financial rating agencies are independent and they all have their own rating scale based on their own standards. Which rating service should you use?