A fixed deposit calculator, often known as an FD interest calculator, will show you the monthly interest rate as well as the FD maturity amount. An FD interest will give you all of the basic facts you'll need to make an investing decision. The interest rate on FDs is established at the time of opening the account and is not affected by market changes. Some financial institutions will even let you break your FDs early if you pay a penalty price. Learn more about the FD calculator on Shriram City Union Finance.