This page estimates the maturity value of an Indian rupee fixed deposit from a principal, an annual interest rate, a tenure in years, months, or days, and a compounding frequency. Quarterly compounding is the default because that is the illustration most retail bank FDs still print. You can switch to monthly, half-yearly, or yearly compound interest, or to a simple-interest payout that does not reinvest coupons. An optional senior-citizen toggle adds 0.50% to the quoted rate as a what-if — issuers set their own extra, and this page does not look up a bank’s card. Everything runs in this browser tab. FlashKit does not store the numbers, does not book a deposit, and does not withhold TDS.
The compound-interest formula is A = P × (1 + r/n)^(n t), where P is principal, r is the annual rate as a decimal, n is the number of compounding periods in a year (12, 4, 2, or 1), and t is tenure in years. Months become t = months / 12. Days become t = days / 365. Simple-interest payout is A = P × (1 + r t) and pays the coupon out instead of folding it back. Worked example that matches the default fields: ₹1,00,000 at 7% a year, compounded quarterly for 5 years. n = 4, t = 5, so A = 1,00,000 × (1.0175)^20 ≈ ₹1,41,478. Interest earned is about ₹41,478. The same principal at simple 7% for five years is only ₹1,35,000 — the gap is the compounding you gave up by taking a payout plan.
Banks still have room to differ. They may use a 365-day or 360-day year, cut the rate on premature withdrawal, add a small extra for a particular senior-citizen slab, or deduct TDS when your interest across branches crosses the threshold for that financial year. A cumulative FD reinvests interest; a non-cumulative FD pays monthly, quarterly, or yearly and is closer to the simple-interest option here. This calculator does not model premature-withdrawal penalties, auto-renewal, sweep-in, or Form 15G/15H. Confirm the deposit advice, the compounding printed on it, and your PAN-linked TDS before you treat the maturity figure as cash in hand.
Use the FD number next to the other India finance tools on FlashKit rather than in isolation. The EMI calculator answers a loan installment, not a deposit. The SIP calculator answers a market-linked illustration, not a contractual coupon. The PPF calculator answers a 15-year government scheme with a yearly deposit cap. The income-tax calculator compares old vs new regime tax — FD interest is usually taxable as “income from other sources” unless a specific exemption applies, and PPF is often described as EEE; none of those labels is personalised tax advice. Related guides cover EMI vs SIP, home-loan EMI, and 5-year / 10-year SIP math if you are ranking a deposit against a loan or a mutual-fund SIP.
The fields above match this article. Principal is rupees (default 1,00,000). Annual interest rate is a percent, not a monthly rate. Tenure accepts years, months, or days. Compounding defaults to quarterly. Senior-citizen extra is off until you tick it. Copy summary writes the estimate plus a “not a bank quote” line. The yearly table shows opening, interest, and closing for each completed year and a residual row when tenure is not a whole number of years. Closing the tab clears the inputs. Nothing is written to FlashKit or to localStorage.
How to estimate an India FD maturity
- Enter the deposit principal in rupees, for example 100000 for ₹1,00,000. Do not type commas.
- Enter the annual interest rate the issuer quoted (for example 7). Tick senior-citizen extra only if you are modelling that 0.50% what-if.
- Set tenure and pick Years, Months, or Days. Five years, 60 months, and 1,825 days are the same t on the 365-day year used here.
- Pick compounding. Quarterly is the usual bank FD card. Simple interest is a payout plan that does not compound.
- Read maturity amount and interest earned. Scroll the yearly breakdown. Copy summary if you want the figures in a notes app — then confirm with the bank’s advice.
Key Features
- Standard compound interest A = P × (1 + r/n)^(n t)
- Monthly, quarterly (default), half-yearly, yearly, or simple-interest payout
- Tenure in years, months, or days (365-day year)
- Optional +0.50% senior-citizen what-if and a yearly breakdown table
- INR en-IN grouping — local only, not a bank quote
How the FD math actually works
- Each compounding period multiplies the running balance by (1 + r/n). Quarterly at 7% is 1.75% per quarter, applied 20 times over five years.
- The yearly table is the same formula at t = 1, 2, 3… so you can see interest earned each year, not a bank statement.
- Simple interest keeps the coupon off the principal. Five years at 7% on ₹1,00,000 is ₹35,000 of interest, paid out, not reinvested.
- A 0% rate is allowed and returns principal unchanged. Garbage-in still garbage-out if you type a monthly rate in the annual box.
- TDS, premature-withdrawal rates, and auto-renewal extras are not subtracted. Put those on top after you read the deposit advice.
FD vs PPF vs SIP vs EMI
- FD: contractual coupon on a lump sum, taxable as interest in most cases, tenure you choose, compounding you pick. Liquidity is better than PPF if the issuer allows premature closure (usually at a lower rate).
- PPF: yearly deposits between ₹500 and ₹1,50,000, 15-year lock-in, government-notified rate revised quarterly, annual compounding. Often described as EEE; 80C may apply in the old regime. Open the PPF calculator for that formula.
- SIP: market-linked mutual-fund illustration at an assumed return you type. No contractual coupon. Use the SIP calculator and treat the corpus as a what-if, not a promise.
- EMI: a loan installment on reducing-balance principal. Comparing “EMI vs FD” only makes sense as cash-flow, not as the same product. Use the EMI calculator for the loan side.
- Income tax: FD interest and PPF treatment are not the same box. Compare regimes on the income-tax calculator, then confirm with a CA. This page will not file an ITR.
Tips, limits, and related tools
- Re-run the same principal at monthly vs quarterly vs yearly so you see how much n is worth on your tenure — the gap shrinks on short deposits.
- If a dealer quotes “flat” interest on a loan, that is not this FD formula. Read the flat vs reducing-balance guide, then use the EMI calculator.
- Senior-citizen extras differ by issuer and by whether the deposit is a tax-saving 5-year FD. The 0.50% toggle is only a planning increment.
- Related tools: PPF calculator, SIP calculator, EMI calculator, income-tax calculator, HRA calculator, in-hand salary calculator, GST calculator. Related guides: EMI vs SIP, home-loan EMI, 5-year/10-year SIP, flat vs reducing-balance.
- Copy the summary before you refresh. Nothing is saved. This is arithmetic, not a deposit offer and not personalised financial advice.
Frequently Asked Questions
Is this FD calculator a bank quote?
No. It is a planning calculator that uses the standard compound-interest formula in your browser. Your issuer’s advice can differ because of day-count, premature-withdrawal rates, TDS, or a different extra for seniors. Confirm the deposit advice.
What FD formula does FlashKit use?
A = P × (1 + r/n)^(n t) for compound interest. Example: ₹1,00,000 at 7% quarterly for 5 years is about ₹1,41,478. Simple-interest payout is A = P × (1 + r t). Days use a 365-day year.
What does the senior-citizen toggle add?
It adds 0.50% to the annual rate you typed. That is a common illustration, not a lookup of any bank’s senior-citizen card. Turn it off and compare if your issuer quotes a different extra.
Is FD interest tax-free?
Usually not. Most bank FD interest is taxable as income from other sources, and TDS may apply above the threshold for that year. A 5-year tax-saving FD has a lock-in and a different 80C story. Confirm with a CA — this is not tax advice.
Should I pick an FD, PPF, or SIP?
This page will not choose for you. FD is a contractual coupon, PPF is a 15-year government scheme with a yearly cap, and SIP is a market-linked illustration. Open the PPF, SIP, and EMI calculators to compare formulas, then talk to a registered advisor if the money matters.
Is my deposit amount uploaded or stored?
No. Math runs in this tab. Closing or refreshing the page drops the inputs. Ads on the page are separate from the calculator. This is not personalised investment or deposit advice.
