TallyKnot

Fixed Deposit Calculator

See what a fixed deposit could be worth when it matures. Enter the amount, the yearly rate, how long you lock it in and how often interest is added, and the calculator shows the interest earned and the final value. You can also compare monthly, quarterly and yearly compounding.

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Your deposit
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Value at maturity-
Your deposit-
Interest earned-

Balance over time

Compounding compared

How a fixed deposit grows

A fixed deposit (also called a term deposit or FD) is money you leave with a bank for a set time at a set rate. In return you usually get a higher rate than an ordinary savings account. The interest is added to the deposit every period, and from then on it earns interest too.

Example. 10,000 at 6% a year, compounded every quarter for one year, grows to about 10,614 — roughly 614 of interest. The same deposit at simple interest would earn a flat 600.

The formula

  • Compound: maturity = amount × (1 + rate ÷ periods)periods × years
  • Simple: maturity = amount × (1 + rate × years)

Things to keep in mind

  • Tax. Interest is often taxable, which lowers what you actually keep.
  • Early withdrawal. Taking the money out before the term ends usually means a penalty or a lower rate.
  • Inflation. If prices rise faster than your rate, the money buys less at maturity even though the number is bigger. To see long-term growth with regular top-ups, try the Compound Interest Calculator.

Frequently asked questions

How is the maturity value worked out?

With compound interest: the balance grows by a share of the yearly rate each period, and that interest then earns interest too. The formula is principal × (1 + rate ÷ periods) raised to the power of periods × years.

What does the compounding frequency change?

It is how often interest is added to the deposit: monthly, quarterly, half-yearly or yearly. At the same yearly rate, more frequent compounding gives a little more, because interest starts earning interest sooner. The difference is usually small.

What is simple interest mode?

Some deposits pay simple interest, where interest is only ever calculated on the original amount, not on the interest already earned. Turn it on to compare. For the same rate and term it gives a lower maturity value than compounding.

Is the result exactly what my bank will pay?

Treat it as a close estimate. Real banks may use daily counts, part-period rules, payout schedules, early-withdrawal penalties and tax on the interest, which this calculator does not model. Always check your bank's own figure before deciding.

What happens at a 0% rate?

The maturity value is the same as the amount you put in, and the interest is zero.

TallyKnot Cashbook

Track your expenses every day, for free

A calculator gives you one answer. A cashbook shows you the whole picture: write down cash in and cash out, see where the money goes in charts and on a calendar, and share a ledger with your family, team or friends.

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