Fixed Deposit (FD)

A Fixed Deposit (FD) is one of the safest savings instruments in India. You place a lump sum with a bank for a fixed tenure — from a few months to several years — at an agreed interest rate, and at maturity the bank returns your principal plus compounded interest. Because the rate is locked for the entire tenure, returns are guaranteed and do not move with markets.

How it works

When you open an FD you agree to two things: the principal amount and the tenure. The bank applies the prevailing rate for that tenure, typically compounding quarterly, although the quoted figure itself varies by term. At the end of the period you can take the maturity amount or roll the deposit over.

Two things to watch:

• Premature withdrawal usually attracts a penalty, and the rate may be recalculated at a lower level.
• Interest is taxable per your income-tax slab, and at maturity you owe tax on the interest earned even though the bank may have already deducted TDS above certain thresholds.

Key points

• Safety — deposits are the default choice for capital preservation.
• Senior citizens generally receive a 0.5% higher rate than regular depositors.
• A 5-year tax-saver FD qualifies for a deduction under Section 80C of the Income-tax Act (up to specified limits).
• Laddering — splitting a deposit across staggered tenures — lets savers manage liquidity while keeping most of the funds at higher rates.

How the maturity math works

An FD grows with the compound-interest formula:

A = P × (1 + r/n)^(n × t)

where P is the principal, r the annual rate, n the compounding frequency (often 4 for quarterly) and t the tenure in years. The quoted "effective" yield is slightly higher than the headline rate precisely because of compounding over the period. Longer tenures usually carry higher rates, and the compounding multiplies the benefit further — one more reason tenure and rate are read together, not separately.

Remember when choosing an FD

• Lock-in vs liquidity. Higher-rate deposits lock your money for longer; laddering balances the two.
• The rate is fixed, not variable. Even if market rates rise after you open it, your FD keeps its agreed rate until maturity.
• Automatic renewal can quietly roll low-rate deposits over; set reminders to re-evaluate at maturity.

A quick example

Deposit ₹1,00,000 for 5 years at 7% compounded quarterly. The maturity value comes to roughly ₹1,41,478, of which about ₹41,478 is interest. The same money left in a no-interest account would still yield ₹1,00,000 — the difference is entirely the effect of compounding.

Project your maturity amount with the FD Calculator.