Calculate your Maturity Amount using Fixed Deposit Interest Calculator Online


A fixed deposit interest calculator is a tool through which you can determine the interest you can earn on your deposited amount. The calculator allows you to calculate the value you will earn when your investments (such as fixed deposits) mature.

It requires the following variables – 

  • Fixed deposit amount.
  • Rate of interest.
  • Maturity tenor.
  • Frequency of interest calculation.

How does a fixed deposit interest calculator work?

A fixed deposit calculator works on the following formula –

A = P (1 + R / N) ^ (N * T)


A is the amount you will realise on maturity.

P is the principal or deposit amount.

N is the frequency at which compound interest will be calculated.

T is the number of years for which you have deposited the fund.

R is the rate of interest.

For example, Mr A has opened a cumulative fixed deposit account by investing Rs.2,00,000 for 3 years at an interest rate of 8%. The interest will be calculated quarterly.

Therefore, the amount he will earn at maturity is

A = 200000 (1 + 0.08 / 4) ^ (4 * 3)

Or, A = 2,53,647

Here, he earned an interest of Rs.53,647 on his investment.

Alternatively, you can use a fixed deposit interest rate calculator to compute the amount you will earn at maturity. It is more precise than manual calculation and allows you to calculate your maturity amount instantly without any hassle.

How to use an online FD calculator?

You can use a fixed deposit interest calculator by visiting the online portal of any financial institution. You can follow the steps mentioned below –

  • Select the type of customer – existing customer, senior citizen, and new customer.
  • Provide the deposit or principal amount.
  • Choose the type of fixed deposit account – cumulative or non-cumulative.
  • Enter the maturity tenor.
  • Select the frequency of interest calculation.

Once you have posted all the necessary details in a fixed deposit interest calculator, you can see the fund received after maturity and the interest component separately.

What are the two types of interest method calculation?

There are two types of interest payment on fixed deposits –

  • Cumulative fixed deposit – In this form of fixed deposit, interest is compounded on a periodical basis and paid at maturity. The interest is calculated on both the principal and interest components and helps you build a substantial corpus over time.For example, Ms C invests Rs.2,50,000 as cumulative fixed deposit with a tenor of 3 years at an interest rate of 8.1%. The interest will be calculated quarterly.

    Therefore, A = Rs. [250,000 (1 + 0.081 / 4) ^ (3 * 4)]

    Or, A = Rs.317994.24

    Interest on the same would be, therefore, Rs.67994.24. Here, the interest earned in the first year would be Rs.20,873 and the closing balance would be Rs.270,873. In the second year, the interest component would be Rs.22,616 and the closing balance would be Rs.293,489. Interest in the third year would be Rs.24,505 and such closing balance at maturity would be Rs.3,17,994.


  • Non-cumulative fixed deposit – In this form of fixed deposit, the interest would be calculated and disbursed on a periodical basis, which would be as per the investor’s discretion. Henceforth, such interest would only be computed based on the principal amount.To make the distinction between the two types of interest calculation clearer, consider the example mentioned above. Ms C invests Rs.2,50,000 in a non-cumulative fixed deposit for a similar tenor and interest rate. She decided to withdraw her interest on a yearly basis.

    Therefore, A = Rs. [250,000 * 0.081 * 3]

    Or, A = Rs.3,10,750

    She would receive an annual interest of Rs.60,750. Here, the interest of 8.1% would be calculated only on the deposit amount. Henceforth, interest accumulation in such is comparatively lower.

Why invest in company fixed deposits?

Fixed deposit is a non-market linked financial instrument which is offered by financial institutions in India. It carries a fixed rate of interest, which is either compounded or calculated simply on the principal. Fixed deposit is one of the safest investment options as returns on it are independent of market fluctuations and thereby does not vary over time.

A company fixed deposit, which is offered by Non-banking financial companies such as Bajaj Finance, offers a higher rate of interest compared to other segments of financial institutions. Henceforth, it also acts as a more profitable deposit option in comparison to savings accounts and an ideal investment avenue for new investors who are considering exercising their surplus income to yield high returns. Bajaj Finance offers the highest fixed deposit rates of up to 8.1% (for new customers under the age of 60 years) on their fixed deposit. You can utilise your capital to earn higher returns with a Bajaj Finance fixed deposit account.

You can use a fixed deposit interest calculator by providing your preferred principal, maturity tenor variables and type of fixed deposit before opening an account.