Savings Account Interest Calculator

This savings account interest calculator estimates how much your bank balance will earn over a chosen period, then shows the effect of tax so you can see the real, in-hand return. It is built for everyday savers comparing banks, anyone deciding how much idle cash to leave in a savings account versus moving it to a fixed deposit, and taxpayers who want to know how Section 80TTA or 80TTB applies to them. A savings account is the most accessible deposit product any bank offers — unlike a Fixed Deposit you can put money in or take it out at any time — but the trade-off is a much lower interest rate. Since the RBI deregulated savings rates in October 2011, every bank sets its own rate, and the spread between the lowest and the highest can exceed 4 percentage points.

How interest is calculated (the daily-balance method)

Since the April 2010 RBI mandate, all banks must compute savings interest using the daily closing balance method. Each day's closing balance earns interest at annual rate ÷ 365, so the figure responds to every deposit and withdrawal. The accrued interest is then credited quarterly, on the last working day of June, September, December and March. Once credited, that interest joins your principal and itself earns interest in the following quarter — so savings interest in effect compounds four times a year. Major Indian banks currently pay roughly 2.7% to 4% on savings balances, while small finance banks pay more.

A worked example

Suppose you keep an average daily balance of ₹1,00,000 in a bank paying 3.5% a year, and you leave it untouched for 12 months. The quarterly rate is 3.5% ÷ 4 = 0.875%. After the first quarter the balance becomes ₹1,00,875; the second quarter earns 0.875% on that slightly higher figure, and so on. After four quarters of compounding the balance grows to roughly ₹1,03,547, meaning about ₹3,547 of interest — a touch more than the ₹3,500 simple interest would give, because of quarterly compounding. The effective annual yield works out a little above the headline 3.5% for the same reason. Move the same ₹1,00,000 to a small finance bank paying 6.5% and the yearly interest jumps to roughly ₹6,660.

Why bank choice matters more than people think

A Public Sector Bank typically pays around 2.7%. A major private bank pays 3.0–3.5%. A Small Finance Bank often pays 6% or more on the very same balance. On a ₹1 lakh average balance that gap is the difference between about ₹2,700 a year and about ₹6,100 a year — more than double, for money sitting in the same kind of account. Small Finance Banks are scheduled commercial banks regulated by the RBI, and deposits up to ₹5 lakh per depositor per bank are insured by the DICGC, exactly like deposits at any other scheduled bank.

Tax on savings interest

Savings interest is fully taxable as Income from Other Sources and is added to your income at your slab rate. Section 80TTA gives non-senior taxpayers a deduction of up to ₹10,000 a year on savings interest only; Section 80TTB gives resident senior citizens a wider ₹50,000 deduction that also covers fixed-deposit and recurring-deposit interest. Both deductions are available only under the old tax regime, and the cap applies to your combined interest across all banks, not per account.

Tips to earn and keep more

Keep only the cash you genuinely need for liquidity in a savings account and sweep the rest into a fixed deposit or a higher-rate small finance bank, since the yield difference compounds over time. If your savings interest is comfortably within the 80TTA or 80TTB cap, it is effectively tax-free, so spreading large balances thoughtfully can matter. Maintaining a steady balance rather than letting it dip mid-month also helps, because interest is computed on the daily closing balance every single day.

Common mistakes to avoid

Many savers assume the listed rate is what they pocket — but tax at your slab can quietly reduce it, which is why the in-hand figure here matters more than the headline rate. Others believe interest is paid only once a year; it is actually credited every quarter and compounds from then on. A further error is thinking the 80TTA cap is per bank — it is a single combined limit across all your savings accounts. This calculator gives estimates based on the rate you enter and standard RBI conventions; actual interest depends on your bank's published rate, which can change at its discretion. It is an informational tool and not financial advice — confirm current rates and your own tax position before acting.