Most banks group their FD rates into four bands: 7 days to 6 months (lowest rates, treated almost like savings), 6 months to less than 1 year, 1 year to less than 5 years (the sweet spot), and 5 years and above (eligible for the 80C tax-saver FD if the bank flags it as such). The 1–3 year band is where banks usually peak their rates and where most retail money sits. Outside that band, you sacrifice yield for either liquidity or for an 80C deduction.
The 5-year tax-saver FD has a hard lock-in: no premature withdrawal, no loan against it, and no auto-renewal. It is only sensible if you have already used up your ₹1.5 lakh 80C limit through PPF, ELSS or EPF and want a guaranteed-return balance. For most goals, a 1–3 year FD plus an FD ladder (a fresh FD started every year so one matures every year) is more flexible and only marginally less profitable.
₹3,00,000 at typical bank rates, by tenure
- 6 months @ 5.50%
- Maturity ₹3,08,313 — interest ₹8,313
- 1 year @ 6.80%
- Maturity ₹3,20,925 — interest ₹20,925
- 3 years @ 7.10%
- Maturity ₹3,70,360 — interest ₹70,360
- 5 years @ 7.00%
- Maturity ₹4,24,861 — interest ₹1,24,861
Notice how 3 years at 7.10% compounds to nearly 23% extra, while 6 months at 5.50% barely beats a savings account. That is the cost of staying too liquid.