CD Calculator Use this calculator to find out how much you can earn on a Certificate. Just enter a few pieces of information to calculate your annual percentage yield (APY) and ending balance. Information and interactive calculators are made available to you as self-help tools for your independent use and are not intended to provide investment advice. We cannot and do not guarantee their applicability or accuracy in regards to your individual circumstances. All examples are hypothetical and are for illustrative purposes. We encourage you to seek personalized advice from qualified professionals regarding all personal finance issues.