FD Calculator
Calculate the maturity value of your Fixed Deposit with our free online FD Calculator. Enter tenure in years, months, or days. Get accurate results for any Indian bank FD based on principal amount, interest rate, tenure, and compounding frequency. Plan your investments wisely and know exactly how much your money will grow.
Calculate Your FD Returns
FD Calculation Results
How FD Interest is Calculated
Fixed Deposit interest in India is calculated using the compound interest formula. Unlike simple interest, compound interest earns interest on previously accumulated interest, resulting in higher returns over time.
FD Maturity Formula
M = P × (1 + r/n)(n×t)
- M = Maturity Amount (final value)
- P = Principal Amount (initial deposit)
- r = Annual Interest Rate (in decimal form)
- n = Compounding Frequency per year
- t = Tenure in years (you can enter months or days; the calculator converts to years)
How banks calculate FD interest (latest)
Based on RBI guidelines and bank terms (e.g. DBS, HDFC):
- Tenor < 6 months (e.g. up to 180 days): Interest is usually paid on simple interest (Principal × Rate × Time / 100). No compounding.
- Tenor ≥ 6 months: Interest is compounded quarterly for most banks. Banks typically do not use one formula for the whole period; they use a hybrid method (see below). Some banks or products may compound monthly or annually—check your FD terms.
- Day count: Banks typically use 365 days in a non–leap year and 366 days in a leap year for converting days to years.
- Exact maturity: Small variance (e.g. ₹10–₹20) can still occur due to bank-specific rounding and day-count; the calculator aims to match bank-style when Quarterly is selected.
Bank-style hybrid (quarterly): Banks use full quarters compounded, then simple interest on the remaining days. Example: 400 days = 4 full quarters (1 quarter = 365/4 ≈ 91 days) + 35 remaining days. Step 1: Amount after 4 quarters = P × (1 + r/4)4, rounded to 2 decimals. Step 2: Interest on remaining days = that amount × rate × (remaining days/365), rounded. Step 3: Maturity = amount after quarters + interest on remaining days. This calculator uses this method when you select Quarterly compounding, so results (e.g. ₹1,07,615 for ₹1,00,000 / 400 days / 6.75%) align with real bank FDs.
Understanding Compounding Frequency
The compounding frequency determines how often interest is added to your principal:
- Yearly (n=1): Interest added once per year
- Half-Yearly (n=2): Interest added twice per year
- Quarterly (n=4): Interest added four times per year (most common in India)
- Monthly (n=12): Interest added every month
Higher compounding frequency results in slightly higher returns because interest starts earning interest sooner.
FD Interest Rates in India
Indian banks typically offer FD interest rates between 5% to 8% depending on tenure and bank. Senior citizens usually get an additional 0.25% to 0.50% higher rate. Tax-saving FDs (under Section 80C) have a mandatory 5-year lock-in period.
Example FD Calculation
Let's calculate the maturity amount for a typical Indian bank FD:
Given Values
- Principal (P): ₹1,00,000
- Interest Rate (r): 7% per annum
- Tenure (t): 5 years
- Compounding: Quarterly (n = 4)
Step-by-Step Calculation
-
Convert interest rate to decimal:
r = 7/100 = 0.07 -
Calculate rate per compounding period:
r/n = 0.07/4 = 0.0175 -
Calculate total compounding periods:
n × t = 4 × 5 = 20 -
Apply the formula:
M = 1,00,000 × (1 + 0.0175)20
M = 1,00,000 × (1.0175)20
M = 1,00,000 × 1.4148
M = ₹1,41,478
Result
- Maturity Amount: ₹1,41,478
- Interest Earned: ₹41,478
- Effective Annual Rate: 7.19%
Your ₹1 lakh investment grows by ₹41,478 over 5 years with quarterly compounding.
Quick Answers
What is a Fixed Deposit?
A Fixed Deposit is a savings instrument where money is invested for a fixed period at a predetermined interest rate. In India, banks typically compound FD interest quarterly for tenors of 6 months or more.
How is FD maturity calculated?
FD maturity is calculated using compound interest based on principal, interest rate, tenure, and compounding frequency. For tenors below 6 months, banks often use simple interest.
Is FD interest taxable in India?
Yes. FD interest is taxable as income under the head “Income from other sources” and is added to your total income. TDS may apply if interest exceeds ₹40,000 (₹50,000 for senior citizens) in a financial year.
What is the typical FD interest rate range in India?
Indian banks typically offer FD rates between 5% and 8% per annum depending on tenure and bank. Senior citizens usually get an extra 0.25% to 0.50%.
Can I withdraw my FD before maturity?
Yes, but premature withdrawal usually attracts a penalty (e.g. 0.5% to 1% lower rate). Tax-saving FDs have a 5-year lock-in and cannot be broken early.
Frequently Asked Questions
Can I enter FD tenure in months or days?
Yes. This FD calculator supports tenure in years (1–30), months (1–360), or days (1–10950). Choose your preferred unit from the dropdown; the result uses the same compound interest formula with tenure converted to years.
What is the minimum amount required to open an FD in India?
Most Indian banks allow you to open a Fixed Deposit with a minimum of ₹1,000 to ₹10,000. Some banks offer FDs starting at ₹100 for special schemes. Corporate FDs may require higher minimum investments of ₹25,000 or more.
Is FD interest taxable in India?
Yes, FD interest is fully taxable as per your income tax slab. Banks deduct TDS at 10% if total interest exceeds ₹40,000 per year (₹50,000 for senior citizens). You can submit Form 15G/15H to avoid TDS if your total income is below the taxable limit.
What happens if I break my FD before maturity?
Premature FD withdrawal typically incurs a penalty of 0.5% to 1% reduction from the applicable interest rate. The interest is recalculated at the lower rate for the period the deposit was held. Tax-saving FDs cannot be broken before 5 years.
How do Indian banks calculate FD interest?
Per RBI guidelines and bank terms: for FDs below 6 months, interest is usually simple interest (Principal × Rate × Time / 100). For FDs of 6 months or more, interest is compounded quarterly. Banks use 365 days (non–leap year) or 366 days (leap year) for day count. Some banks or products may compound monthly or annually—check your FD agreement. Exact maturity can differ by a few rupees due to rounding at each credit.
Which compounding frequency gives the highest returns?
Monthly compounding gives slightly higher returns than quarterly or yearly compounding because interest is added more frequently. However, most Indian banks compound FD interest quarterly for tenors of 6 months or more (per RBI/bank practice). Select the frequency that matches your bank to get a closer estimate. The difference is minimal—about 0.1% to 0.2% higher effective rate with monthly vs quarterly compounding.
Are bank FDs safe in India?
Bank FDs in India are insured by DICGC (Deposit Insurance and Credit Guarantee Corporation) up to ₹5 lakh per depositor per bank. This covers both principal and interest. For amounts above ₹5 lakh, choose scheduled commercial banks with strong credit ratings.