Fixed deposit calculator
See what a fixed deposit grows to. Enter the amount, rate, and term to find the maturity value and the interest you would earn.
This tool involves interest (riba) and is shared for educational and informational purposes only — it is not financial advice. Interest-based finance is not permissible in Islam; please consider Shariah-compliant alternatives.
How FD growth works
Interest is added back to the deposit at the end of each compounding period, so later interest is earned on a larger balance. The interest earned is simply the maturity value minus the amount you invested.
FAQs about fixed deposits
How is FD maturity calculated?
A fixed deposit grows by compound interest. The maturity is P × (1 + r/n)^(n×t), where P is the deposit, r is the annual rate, n is how many times a year interest is added, and t is the years.
How often is FD interest compounded?
Most banks compound FD interest every quarter. This tool defaults to quarterly but lets you choose monthly, half-yearly, or yearly to match your bank.
What is the difference between cumulative and non-cumulative FD?
A cumulative FD adds interest back and pays it all at maturity, which is what this tool shows. A non-cumulative FD pays interest out at regular intervals instead.
Is FD interest taxable?
Usually yes — interest earned on a fixed deposit is treated as income and taxed accordingly. Depending on where you live, tax may also be withheld at source once the interest passes a yearly threshold.
Does more frequent compounding help?
Slightly. For the same annual rate, monthly compounding gives a little more than quarterly or yearly, because interest starts earning interest sooner.