FD Calculator

The FD Calculator estimates the maturity value of a bank Fixed Deposit — the safest, most predictable savings instrument available to Indian investors. Enter the deposit amount, the annual interest rate offered by your bank, the tenure in months or years, and the compounding frequency (quarterly is standard for most Indian FDs; some banks offer monthly). The tool returns your maturity amount, the interest earned, and the effective annual yield. Fixed Deposits work on the compound interest principle: interest is calculated at the stated rate and added back to the principal at the chosen compounding frequency, so subsequent interest is earned on the growing balance. The standard formula is A = P × (1 + r/n)^(n×t), where P is the principal, r is the annual rate, n is the number of compounding periods per year, and t is the tenure in years. Quarterly compounding (n = 4) gives you a slightly higher effective yield than annual compounding at the same nominal rate. Use the calculator to compare offers across banks. Interest rates vary meaningfully — small finance banks and NBFCs often offer 0.5–1.5% higher than large private banks, though with slightly higher counterparty risk (mitigated by DICGC insurance up to ₹5 lakh per bank per depositor). Senior citizens usually earn an extra 0.25–0.75% across the board, so if you're 60+ or investing on behalf of a senior parent, factor that in. FDs are best suited for goals within a 1–5 year horizon: emergency funds, near-term down payments, wedding funds, upcoming education fees. For longer goals (10+ years), the after-tax, after-inflation real return on FDs is typically 1–2% — historically much lower than equity mutual funds, though far more predictable. Interest earned is fully taxable at your income tax slab rate, so a 7% pre-tax FD earns roughly 4.9% after tax for a 30%-slab investor. Consider these variants when planning. Cumulative FDs reinvest interest automatically — best for goal-based savings. Non-cumulative FDs pay out interest monthly, quarterly, or annually — best for retirees seeking regular income. Tax-saver FDs have a 5-year lock-in and qualify for Section 80C deduction up to ₹1.5 lakh a year. FD laddering — splitting one large deposit across multiple maturities — balances liquidity with locking in current rates. Everything runs client-side in your browser. Pair this tool with the RD Calculator for monthly-deposit variants, the Compound Interest Calculator for the general formula, and read our FD vs RD comparison guide to pick the right instrument for your situation.