Finance tool
FD Calculator
The FD Calculator estimates what a fixed deposit will be worth at maturity. Enter the principal, annual interest rate, and tenure in months, and the tool applies quarterly compounding the way most banks do.
The calculation runs locally in your browser, so your figures never leave your device.
Privacy & data handling
Browser processingThis tool processes your input locally in your browser. Nothing is uploaded to a server or sent to an external service.
Interactive tool
FD Calculator
₹1,41,478
after 5 years at 7% p.a.₹41,478
+41.5% total gain₹1,00,000
70.7% of maturity valueMathematical Formula:
- P = Principal Deposit Amount
- r = Annual Interest Rate (Annual Rate ÷ 100)
- n = Compounding Frequency (Quarterly = 4, Monthly = 12, Yearly = 1)
- t = Total Deposit Tenure in Years
- For 0% Interest Rate: M = P (Zero growth)
Bank Compounding Mechanics:
• In India, scheduled commercial banks typically compound fixed deposit interest on a Quarterly basis. This reinvests the accumulated interest every 3 months into the principal pool, resulting in a higher effective annual yield (EAY).
• 100% Client-Side Privacy: All calculations execute entirely inside your browser memory.
Overview
What does FD Calculator do?
Enter three numbers, one per line: the deposit amount, the annual interest rate, and the tenure in months. The tool returns the maturity value and the interest earned above your principal.
Defaults of 1,00,000 at 7% for 12 months apply if you leave a field blank.
Under the hood
How does it work?
Fixed deposits are typically compounded quarterly. The tool applies the quarterly rate (annual rate divided by 4) for the number of quarters in your tenure, using the compound interest formula. The interest shown is the maturity value minus your principal.
Key features
Features of FD Calculator
Use cases
When should you use FD Calculator?
Comparing bank rates
Run the same amount and tenure at different rates to compare maturity values.
Planning a deposit
Check what a lump sum will grow to before locking it in.
Building a ladder
Compare short and long tenures to design a deposit ladder for liquidity.
Step-by-step
How to use FD Calculator
- Step 1
Enter your deposit amount and tenure.
- Step 2
Enter the interest rate offered by your bank.
- Step 3
View the maturity amount and interest earned.
Real example
Example
Before (input)
100000 7 12
After (result)
Principal: Rs 100,000 Maturity: Rs 107,186 Interest: Rs 7,186
1 lakh for 12 months at 7% compounded quarterly.
Technical information
How the details work
Inputs are parsed as floats from the first three lines with defaults of 1,00,000, 7%, and 12 months. The formula compounds quarterly: maturity equals principal times (1 + annual rate / 4) raised to (4 × tenure in months / 12). Interest is maturity minus principal.
Privacy & security
Your data stays yours
All calculations happen locally in your browser. Your figures are never uploaded or stored.
Local processing — files stay in your browser
- The calculation runs on your device with no network requests.
- Nothing you enter is saved after the tab is closed.
- No account or data collection of any kind.
Limitations
What this tool does not do
- It assumes fixed quarterly compounding — banks may compound differently for some products.
- Tax on interest and early-withdrawal penalties are not included.
- Senior-citizen and other special rates are not modeled.
Frequently asked questions
Common questions about FD Calculator
How is FD interest compounded?
Most banks compound fixed deposits quarterly — the calculator follows that convention. Some products compound differently, which changes the result slightly.
Does it include TDS on interest?
No. The result is gross interest before tax. Banks deduct TDS above thresholds depending on your PAN status.
Can I enter tenure in years?
Enter months — 24 for two years, 36 for three. The tool converts months to quarters internally.
Is my data private?
Yes. Everything runs in your browser and nothing is transmitted or stored.
What if I break the FD early?
Banks usually apply a lower rate and a penalty on premature withdrawal — the calculator assumes you hold to maturity.
What compounding frequency is used for Fixed Deposit calculation?
Most commercial banks compound FD interest quarterly. The maturity formula is A = P * (1 + r/4)^(4*t), where P is principal, r is annual interest rate, and t is tenure in years.
How does cumulative FD differ from non-cumulative FD?
In a cumulative FD, interest is reinvested and paid out with principal at maturity. In a non-cumulative FD, interest is paid out periodically (monthly, quarterly, or annually) as regular income.
Are bank fixed deposits taxable?
Yes. Interest earned on fixed deposits is added to your total income and taxed according to your applicable income tax slab. Banks also deduct TDS (Tax Deducted at Source) if annual interest exceeds statutory thresholds.
What is the senior citizen interest rate benefit?
Most commercial banks offer senior citizens (age 60 and above) an additional 0.50% to 0.75% interest rate over standard FD rates.
Can I break or withdraw my FD before maturity?
Premature withdrawal is usually allowed by banks, but typically incurs a penalty of 0.5% to 1.0% on the applicable interest rate for the period the deposit was held.
Related tools
SIP Planner
NewCalculate potential returns on systematic investment plans with monthly contribution and tenure.
Investment Planner
NewGet an educational asset-allocation estimate based on amount and risk appetite. Not personalized financial advice.
Budget Planner
NewSplit your monthly income into a simple needs, wants, and savings budget.
Related guides
Practical articles to help you get the most out of this tool and related workflows.
Finance
Monthly Budget Planning for Beginners: A No-Nonsense Framework
Stop guessing where your money goes. Track income and expenses with a framework you will actually maintain.
Finance
EMI vs. Total Interest: How to Compare Loan Offers Properly
The lowest EMI is rarely the cheapest loan. Learn to compare offers by total interest and effective cost, not monthly payments.
Need another tool?
Browse the full catalog and jump between related workflows with SEO-friendly internal links.
Explore all tools