This FD calculator estimates fixed deposit maturity value and interest from principal, annual rate, tenure, and compounding frequency. Bank conventions and taxes can differ from a clean compound formula, so confirm the deposit sheet before you invest.
Fixed deposits lock money for a term in exchange for a stated rate schedule. This fd calculator helps you compare maturity amounts before you commit. It is an educational estimate and does not include every bank fee or tax rule.
Explore more under investment and savings. Related tools: compound interest calculator, simple interest calculator, inflation calculator, and SIP calculator.
What this fd calculator estimates
The primary result is maturity value after compounding for the term. Detail shows interest earned as maturity minus principal. Frequency choices such as quarterly compounding change how often interest is added.
How to estimate fixed deposit maturity
- Enter the deposit principal.
- Enter the annual interest rate percent.
- Enter the term in years.
- Choose compounding frequency.
- Compare maturity and interest earned.
How the calculation works
Maturity = P × (1 + r ÷ n)^(n × t)
Interest earned = Maturity − P
P is principal, r is annual rate as a decimal, n is compounds per year, and t is time in years. This matches Multicalify compound interest math used for FD style deposits.
Example: P = 100,000, r = 7% (0.07), t = 3 years, n = 4 quarterly. Maturity = 100000 × (1 + 0.07/4)^(4×3) ≈ 123,143. Interest earned ≈ 23,143.
| Input | Value |
|---|---|
| Principal | 100,000 |
| Rate | 7% annual |
| Years | 3 |
| Frequency | 4 (quarterly) |
FD calculator versus compound interest calculator
The math family is related, but this page keeps bank deposit framing: principal, tenure, and compounding cadence for a fixed deposit. The compound interest page is the general purpose version. Use inflation tools to see whether maturity gains outpace rising prices.
Factors that change real outcomes
- Bank compounding convention versus your frequency choice
- Payout versus reinvestment options
- Taxes on interest
- Penalties for early withdrawal
- Inflation over the term
FD comparison mistakes savers make
- Comparing a monthly compound quote with an annual quote without aligning frequency
- Ignoring tax drag on interest
- Assuming premature withdrawal still pays full maturity
- Forgetting inflation when judging whether the deposit grew in real terms
Limitations
Estimates exclude special bank schemes, TDS rules, and currency effects. Confirm the deposit confirmation sheet before you invest.
Choosing an FD term with clear compounding
Match principal, rate, term, and compounding to the offer, compare interest earned, and check premature withdrawal rules. Use inflation math for a real-return sense check.
Laddering deposits with multiple runs
Some savers split funds across several tenures so money frees up on a schedule. Run this calculator once per ladder rung with that rung principal and term. Sum maturity values for a portfolio view, then compare with a single long deposit if rates differ by tenure.
When equity SIP returns are the alternative, use the SIP calculator for contribution style investing and keep FD estimates for capital preservation comparisons.
Compounding frequency and real bank quotes
Two deposits with the same nominal rate can mature differently if one compounds quarterly and another pays simple interest periodically. Align frequency with the bank quote before you crown a winner.
After you estimate maturity, pressure-test purchasing power with an inflation calculator so the headline interest is not mistaken for real growth.
Related: Compound Interest Calculator · Inflation Calculator · how a fixed deposit works.