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FD Interest Calculator
When it comes to safe and reliable investments, Fixed Deposits (FDs) are one of the most popular choices in India. They offer guaranteed returns, low risk, and flexible tenure options. But before investing, one important question always comes up: "How much interest will I actually earn?"
An FD Interest Calculator answers that instantly — enter your deposit amount, interest rate, tenure, and compounding frequency to see the exact maturity value and year-by-year growth.
Types of Fixed Deposits
- Regular FD: Standard deposit with a fixed rate and tenure — the most common type.
- Tax-Saving FD: 5-year lock-in period with deduction under Section 80C (up to ₹1.5 lakh).
- Senior Citizen FD: Banks typically offer 0.25%–0.50% higher rates for senior citizens.
- Cumulative FD: Interest is compounded and paid at maturity — maximises total returns.
- Non-Cumulative FD: Interest paid out periodically (monthly, quarterly) — useful for regular income.
FD vs Other Investment Options
| Feature | Fixed Deposit | Mutual Funds | Stocks |
|---|---|---|---|
| Risk level | Low — capital protected | Medium — market-linked | High — volatile |
| Returns | Fixed & guaranteed | Market-linked, potentially higher | Market-linked, highest potential |
| Liquidity | Moderate (premature penalty) | High (most funds) | High (trading days) |
| Best suited for | Capital protection, stable income | Medium-long term wealth | Long-term aggressive growth |
Tips for Better FD Investment
- Compare rates before investing — small banks and NBFCs often offer higher rates than large banks
- Choose cumulative FD for long-term goals — compounding delivers significantly more than periodic payouts
- Ladder your FDs — split one large FD into multiple smaller ones with different maturities for better liquidity
- Invest for longer tenures — compounding accelerates sharply after year 5+
- Check premature withdrawal penalties — typically 0.5%–1% reduction on the applicable rate
Frequently Asked Questions
Most bank FDs use compound interest: A = P × (1 + r/n)^(nt) — where P is principal, r is the annual rate, n is compounding frequency per year, and t is tenure in years. Quarterly compounding (n=4) is most common in India. The calculator above applies this formula automatically for whichever frequency you choose.
In a cumulative FD, interest is compounded and reinvested throughout the tenure — you receive the full maturity amount at the end. This maximises total returns. In a non-cumulative FD, interest is paid out at regular intervals (monthly, quarterly, annually) — useful if you need regular income, but the total return is lower since the interest isn't compounded.
Yes. FD interest is taxed as "Income from Other Sources" at your applicable income tax slab rate. Banks deduct TDS at 10% if annual interest exceeds ₹40,000 (₹50,000 for senior citizens). If your total income is below the taxable limit, you can submit Form 15G/15H to avoid TDS deduction. Tax-saving FDs offer a deduction under Section 80C on the invested amount, but the interest earned is still taxable.
Yes, most banks allow premature withdrawal of FDs. However, a penalty is typically charged — usually a 0.5% to 1% reduction on the interest rate applicable for the period the FD was held. Tax-saving FDs have a mandatory 5-year lock-in and cannot be broken prematurely. Always check the bank's premature withdrawal terms before investing.
FD laddering means splitting a large lump sum into multiple FDs with different maturity dates — for example, three FDs maturing in 1 year, 2 years, and 3 years. This gives you liquidity at regular intervals without breaking a large FD prematurely, allows you to reinvest at potentially higher rates as each FD matures, and reduces the impact of interest rate changes on your overall portfolio.
