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About this tool
Compare maturity estimates across post office NSC, KVP and MIS savings schemes.
The Post Office Scheme Calculator estimates what an NSC, KVP or MIS deposit returns for a rate and term you supply: NSC and KVP use the compound formula A = P(1 + r/n)^(nt), while MIS reports monthly income as principal x rate ÷ 12 with the deposit returned separately at the end. Enter the amount, the annual rate from the current India Post quarterly notification and the term, and you get maturity value, interest earned and a row-by-row breakdown. It is for savers comparing small-savings schemes before walking into a post office. Verify rates, limits and tax treatment officially before you commit.
Open Post Office Scheme Calculator on AltFTool — it loads instantly in your browser.
Pick a Scheme: 'NSC — compound maturity estimate', 'KVP — maturity estimate' or 'MIS — monthly income estimate'.
Fill in Deposit (₹), the Annual rate (%) from the current India Post quarterly notification, Term (years) and Compounds per year.
The result gives the estimated maturity, or estimated monthly income for MIS, with Deposit and Estimated interest rows; Download saves post-office-scheme-calculator.txt.
The monthly scheme shows monthly, annual and full-term interest with the principal listed separately, because MIS pays interest out rather than compounding it.
NSC compounds annually by default, but the frequency is an input, so you can test how a different compounding assumption changes the maturity figure.
The rate is a field you fill from the current quarterly notification, so the estimate cannot silently be built on a figure that changed last quarter.
With the standard compound interest formula, maturity = P x (1 + r/n)^(nt), where P is the deposit, r the annual rate as a decimal, n the compounding periods per year and t the term in years. NSC interest is conventionally compounded annually and paid out only at maturity, so nothing is credited to you in between.
Deposit x annual rate ÷ 12. On a ₹1,00,000 deposit at a 7.4% rate that is about ₹617 a month, with the ₹1,00,000 itself returned at the end of the term — MIS pays interest out, so the principal never grows.
India Post small-savings rates are notified quarterly by the Ministry of Finance and published on the India Post website. The rate field itself doesn't change automatically when you switch the Scheme dropdown — use the "NSC example" and "MIS example" preset buttons to load a scheme together with its example rate (7.7% and 7.4% respectively) in one click, then replace that rate with the one in force for your quarter.
Interest from these schemes is generally taxable, and the details differ by scheme, by whether TDS applies and by your own slab. NSC deposits may also qualify for a deduction under the relevant section. This tool does not model tax at all — treat its output as a gross estimate and confirm the treatment with a tax professional.
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