FD Interest Calculator FD stands for Fixed Deposit FD's are most common investment planning widely used by Indian's for future saving in Bank or Post office. There are many formulas and conditions are applied while calculating interest on FD amount. Different bank's offer different rates of Interest for different - different time period. You can calculate and check the same with below FD Interest calculators. If you break FD before it's mature, banks impose some penalty in form of lower interest. Be careful and acknowledged this from bank in advance, so when ever you stuck in such a situation, you will be prepare in advance and compare policies of various banks. Want to know how much you can earn interest on specific amount on FD - Fixed Deposit in Bank or Post Office. Here is a online FD interest calculator which gives maturity amount and interest you can earn with various methods of interest compounding like - 1. Simple Interest2. Compound Annually Interest3. Compound Semi Annually Interest4. Compound Quarterly Interest5. Compound Monthly Interest Tax Treatment on Fixed Deposits There are two types of Fixed deposits A. Fixed Deposit In normal fixed deposit you have to pay tax on interest as per your income tax slab. There is no rebate in income tax. TDS is also deducted as per law for FD's. FD's are classified in "TTT" category. You have to pay tax for principle amount, for interest earned and for maturity amount also. B. Tax Saving Fixed Deposit There are Tax Saving FD are also available under Section 80c, in which you will get tax rebate for principle amount upto 1,50,000 (INR) in a financial year. Whatever interest you earned with Tax saving FD will attract tax as per your slab. These Tax saving FD has a fixed 5 year period also. You can't break them in between. Tax saving FD's are classified under "ETT" category. Means only Investment is tax free, earned interest and maturity is not tax free.