Calculator
What the FD Calculator does
FD Calculator: calculates Maturity / Total Received, Interest Earned and Periodic Payout (non-cumulative) from Principal, Interest Rate and Tenure. Formula: A = P x (1 + r/n)^(n x t). Example: principal 100000 ₹, interest rate 6.5 % p.a. and tenure 3 years gives maturity / total received ₹1,21,340.76.
The FD Calculator turns Principal, Interest Rate, Tenure and Compounding into Maturity / Total Received, Interest Earned and Periodic Payout (non-cumulative). Values update as you type, so comparing options is a matter of editing one field.
Typical users are anyone weighing up a loan. Small differences in rate or term compound into large differences in what you actually pay.
The work is done by JavaScript already loaded in your browser, so your input never crosses the network.
Everything needed to verify a result is further down: the fields, the method and one fully worked example.
What do the FD Calculator fields mean?
The FD Calculator uses 6 inputs. Nothing is blank on load, so you can see the shape of the answer before supplying your own figures.
| Field | What to enter | Default |
|---|---|---|
| Principal | measured in ₹ | 100000 |
| Interest Rate | measured in % p.a. | 6.5 |
| Tenure | measured in years | 3 |
| Compounding | choose from Quarterly, Half-Yearly, Yearly or Monthly | Quarterly |
| Interest Payout | choose from Cumulative (reinvested, paid at maturity), Monthly payout, Quarterly payout or Yearly payout | Cumulative (reinvested, paid at maturity) |
| Senior Citizen (60+) | choose from No or Yes | No |
How does the FD Calculator work?
n is how many times interest is compounded per year, so a higher n produces a larger maturity value for the same nominal rate.
Validation runs before the calculation, which is why a mistyped value shows an error rather than a plausible-looking result.
Worked example
These are the values the FD Calculator loads by default, and the result it produces from them. These are the exact values loaded when the page opens, and the answer they produce.
| Principal | 100000 ₹ |
|---|---|
| Interest Rate | 6.5 % p.a. |
| Tenure | 3 years |
| Compounding | Quarterly |
| Interest Payout | Cumulative (reinvested, paid at maturity) |
| Senior Citizen (60+) | No |
| Maturity / Total Received | ₹1,21,340.76 |
|---|---|
| Interest Earned | ₹21,340.76 |
| Periodic Payout (non-cumulative) | ₹0.00 |
| TDS Deducted (10%) | ₹0.00 |
| Net After TDS | ₹1,21,340.76 |
| Tax note | Yearly interest stays under the 50k TDS threshold, so no TDS is deducted. Interest is still taxable at your slab rate. |
Read next: Compound vs Simple Interest: Where the Difference Comes From
How to use it
- Key in Principal in ₹.
- Fill in Interest Rate in % p.a..
- Type Tenure in years.
- Pick a value for Compounding: the options are Quarterly, Half-Yearly, Yearly or Monthly.
- Pick a value for Interest Payout: the options are Cumulative (reinvested, paid at maturity), Monthly payout, Quarterly payout or Yearly payout.
- Pick a value for Senior Citizen (60+): the options are No or Yes.
- No confirmation step: what you type is what gets calculated.
- Read Maturity / Total Received, Interest Earned, Periodic Payout (non-cumulative), TDS Deducted (10%), Net After TDS and Tax note in the results panel.
- Print gives a tidy version without the navigation, which is handy for attaching to a file.
What this tool does not do
- Rates are treated as fixed for the whole term; a floating rate will change the outcome.
- Fees, processing charges and taxes are not included unless there is a field for them.
- It handles the common case well and the unusual case literally.
- A number that passes validation has been checked for plausibility, not for correctness.
Frequently asked questions
Enter Principal in ₹, Interest Rate in % p.a. and Tenure in years. Each field states its unit next to the input, and outputs are labelled the same way.
With the values loaded when the page opens, maturity / total received comes out as ₹1,21,340.76. Overwrite any of the starting values and the result follows.
No. There is no account, no session and no storage. The values exist only while the tab is open.
No payment and no login. Advertising covers the running costs.
It is precise to the method and honest about its scope: no calculator can know your eligibility, and eligibility is what usually moves the final number.