How you can enhance the future value of your FD investment . Invest in company FDs . The company fixed deposits such as Bajaj Finance FD are providing at least 1% to 2% extra interest rates than regular bank FDs. Bajaj Finance FD is providing high-interest rates up to 8.35%, which goes up to 8.70% for senior citizen fixed deposits. Future Value of a Single Deposit. To calculate the future value of a one-time, lump-sum investment, enter the dollar amount invested, the interest rate you expect to earn, and the number of years you expect to let the investment grow, then click the "Compute" button. Note: When entering numbers into the data fields only use numbers Calculators : This form calculates the future value of an investment when deposits are made regularly. All deposits are assumed equal. You must provide the amount of each deposit, the frequency of the deposits, the term in months, and the nominal interest rate. It is assumed that interest is compounded with each deposit.