Interest Calculator

Certificate of Deposit Calculator

Use this calculator to find out how much interest you can earn on a Certificate of Deposit (CD). Just enter a few pieces of information and we will calculate your APY and ending balance.

For additional information on Bank of Internet USA's Interest Calcuations see Tiering Methods.

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 can not 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.

Definitions

Initial deposit:
The starting balance for your CD.

Months:
The total number of months for this CD to mature. A Month is equal to a year divided by 12 or 30.416¯. A year is equal to 365 days.

Interest rate:
The published interest rate for this CD. Make sure to enter the actual interest rate, not the Annual Percentage Yield (APY).

Annual percentage yield (APY):
This is the effective annual interest rate earned for this CD. A CD's APY depends on the frequency of compounding and the interest rate. Since APY measures your actual interest earned per year, you can use it to compare CD's of different interest rates and compounding frequencies.

Compounding:
Interest earned on your CD's accumulated interest. This calculator allows you to choose the frequency that your CD's interest income is added to your account. The more frequently this occurs, the sooner your accumulated interest income will generate additional interest. You may wish to check with your financial institution to find out how often interest is being compounded on your particular CD. The interest will remain and compound with principal.

For additional information on Bank of Internet USA's Interest Calcuations see Tiering Methods.