FD Calculator – Fixed Deposit Maturity & Interest
Compute the maturity amount and interest earned on a fixed deposit. Choose compounding frequency and enter principal, rate and tenure to estimate returns.
FD Calculator Form
FD Formula
The maturity amount for a fixed deposit with periodic compounding is calculated using the standard compound interest formula.
Formula (mathematical):
A = P × (1 + r / n)n × t
Where:
- P = Principal amount (initial deposit)
- r = Annual nominal interest rate (decimal)
- n = Number of compounding periods per year
- t = Time in years
- A = Maturity amount after t years
Interest earned = A − P. Use this to estimate the final corpus at maturity.
FD Snapshot
| Metric | What it Shows |
|---|---|
| Maturity Amount | Principal plus accumulated interest at the end of the term |
| Interest Earned | Total interest you receive over the FD term |
This FD calculator computes the maturity value of a lump-sum deposit using the chosen compounding frequency. It is useful for planning bank fixed deposits, recurring-bond style investments (single deposit), and comparing offers with different compounding frequencies.
When to use this calculator
Use it when you want to know how much a principal will grow over a fixed term at a quoted annual interest rate. It helps compare monthly vs annual compounding and plan for maturity goals like short-term savings.
How it works (plain explanation)
The calculator divides the nominal annual rate into periodic rates based on your chosen frequency (monthly, quarterly, etc.) and compounds the principal that many times per year for the duration. More frequent compounding slightly increases the maturity amount for the same nominal rate.
Factors that affect FD returns
Principal amount, nominal interest rate, compounding frequency, and term length determine FD growth. Taxes on interest and premature withdrawal penalties (if any) reduce net realized returns; check your bank’s terms for clarity.
Frequently asked questions
What is an FD maturity amount? The amount you receive at the end of the FD term, including principal and compounded interest.
Does compounding frequency matter? Yes — monthly or daily compounding yields slightly higher returns than annual compounding at the same nominal rate.
Are FD returns guaranteed? Bank FDs usually offer guaranteed returns for the chosen tenor; however tax and premature withdrawal rules may change net outcomes.
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Disclaimer: This calculator is for educational purposes only and does not constitute financial advice. Always consult a qualified advisor for investment decisions.