# How much will my FD earn?

Works out the maturity amount and the interest of a fixed deposit (FD) in rupees from the deposit, the yearly rate, the tenure and how often the bank compounds interest.

- Page: https://www.acalculator.org/finance/fd-calculator
- JSON spec: https://www.acalculator.org/finance/fd-calculator.json
- Version: b9f0a85073bc

## Default answer

Example with the default inputs (Deposit (₹) 100,000, Interest rate a year 7%, Tenure: years 5, Interest compounded Quarterly): ₹100,000 in an FD at 7% grows to ₹141,477.82, earning ₹41,477.82.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| p | Deposit (₹) | The amount in rupees put in the fixed deposit. |
| r | Interest rate a year | The yearly interest rate the bank quotes for the tenure (the simple rate, before compounding). |
| y | Tenure: years | Whole years in the tenure. |
| m | and months | Extra months on top of the years. |
| c | Interest compounded | How often the bank adds interest to the deposit. Check your bank’s terms. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| maturity | Maturity amount (₹) | The deposit plus all the interest at the end of the tenure. |
| deposit | Deposit (₹) | The amount you put in. |
| interest | Interest earned (₹) | The maturity amount minus the deposit. |
| yield | Effective yearly yield | (1 + r ÷ m)^m − 1: what the rate earns in a full year once compounding is included. |
| periods | Compounding periods | The whole compounding periods in the tenure. |
| leftover | Months at simple interest | Months after the last whole period, paid simple interest. |

## Method

m = compoundings a year; q = whole periods in the tenure; L = months left over; A = P × (1 + r ÷ m)^q × (1 + r × L ÷ 12); interest = A − P.

## Assumptions

- The rate stays the same for the whole tenure, and the interest stays in the deposit until maturity (a cumulative FD).
- Months after the last whole compounding period earn simple interest on the grown amount. Banks count the days of a broken period, so their figure can differ by a few rupees.
- Tax deducted at source (TDS) and premature withdrawal penalties are not included.

## Worked examples

1. p = 100,000, r = 7%, y = 5, c = quarterly gives maturity = 141,477.819576, interest = 41,477.819576, yield = 7.185903%, periods = 20. Source: U.S. Securities and Exchange Commission, Investor.gov, Compound interest calculator and formula, https://www.investor.gov/financial-tools-calculators/calculators/compound-interest-calculator (retrieved 2026-10-03).
2. p = 50,000, r = 6.5%, y = 1, m = 4, c = quarterly gives maturity = 54,490.259674, periods = 5, leftover = 1. Source: Reserve Bank of India, Master Direction: Interest Rate on Deposits, 2016 (banks set term deposit rates and must disclose them; premature withdrawal earns the rate for the period the deposit stayed), https://www.rbi.org.in/Scripts/BS_ViewMasDirections.aspx?id=10394 (retrieved 2026-10-03).
3. p = 10,000, r = 4%, y = 5, c = yearly gives maturity = 12,166.529024, yield = 4%.
4. p = 25,000, r = 6%, y = 0, m = 2, c = quarterly gives maturity = 25,250, interest = 250, periods = 0.
5. p = 200,000, r = 7.2%, y = 1, c = monthly gives maturity = 214,884.833544, yield = 7.442417%. Source: U.S. Securities and Exchange Commission, Investor.gov, Compound interest calculator and formula, https://www.investor.gov/financial-tools-calculators/calculators/compound-interest-calculator (retrieved 2026-10-03).

## FAQ

### How is FD interest calculated?

For a cumulative FD, interest is added to the deposit at each compounding period: A = P × (1 + r ÷ m)^q, where m is the periods in a year and q the whole periods in the tenure. ₹1,00,000 at 7% for 5 years compounded quarterly is 1,00,000 × 1.0175²⁰ = ₹1,41,477.82.

### How often do banks compound FD interest?

Terms differ between banks and deposits, so pick the compounding your bank states; the calculator starts at quarterly. Monthly compounding earns a little more than quarterly at the same rate.

### What happens with a tenure that is not a whole number of quarters?

The calculator compounds the whole periods, then pays simple interest for the months left over. ₹50,000 at 6.5% for 1 year and 4 months is 5 quarters plus 1 month. Banks count the days of that broken period, so their figure can differ by a few rupees.

### What is the effective yield of an FD?

It is what the rate earns in one full year with compounding: (1 + r ÷ m)^m − 1. A 7% FD compounded quarterly yields 7.19% a year.

### Does the result include tax?

No. The calculator shows interest before any income tax or tax deducted at source (TDS), and before any penalty for closing the deposit early.

### How is an FD different from a CD?

Both lock a deposit for a fixed term at a fixed rate. A US CD is usually quoted as an APY, which already includes compounding, while an FD is quoted as a yearly rate with a compounding period. At yearly compounding the two give the same result.

## Sources

- Reserve Bank of India, Master Direction: Reserve Bank of India (Interest Rate on Deposits) Directions, 2016. https://www.rbi.org.in/Scripts/BS_ViewMasDirections.aspx?id=10394 (retrieved 2026-10-03)
- U.S. Securities and Exchange Commission, Investor.gov, Compound interest calculator and formula. https://www.investor.gov/financial-tools-calculators/calculators/compound-interest-calculator (retrieved 2026-10-03)