Fixed deposit calculator.
Estimate FD maturity, compare reinvestment with interest payouts, and include an optional effective tax assumption.
FD inputs
Enter your quoted rate. Example rates are not live bank offers.
Nominal annual rate, compounded 4 times/year; fractional periods use exponential interpolation. Optional tax is reserved from interest at maturity, not deducted annually. Bank day-count, TDS and premature withdrawal rules are excluded.
How this fixed deposit calculator works
A cumulative deposit grows as principal × (1 + nominal annual rate / compounding frequency) raised to frequency × years. Payout mode keeps principal unchanged and estimates simple interest paid monthly or quarterly. These are distinct uses of a deposit: growing a balance or receiving income.
A worked example
A 100,000 deposit at 8% compounded quarterly for one year grows to 108,243.22 before tax. At the same nominal rate, the simplified quarterly payout model pays 2,000 per quarter and returns the 100,000 principal at maturity.
Will this exactly match my bank’s maturity or monthly payout?
Not necessarily. Banks may use daily conventions, special treatment of incomplete quarters, discounted monthly payouts and premature withdrawal penalties. Tax here is an effective assumption on interest; cumulative tax is reserved at maturity, not deducted annually. It is not a TDS calculation.
References and further reading
Calculations run on your device. Review your results before exporting or sharing them.