Project what monthly contributions to PPF, ELSS, NPS or similar products could grow to, with an optional tax on gains.
How to use it. Enter what you plan to put in each month and a return you choose as an assumption. The tool compounds monthly. For products whose maturity is tax-free, such as the Public Provident Fund, set the tax on gains to 0. For an ELSS fund, an effective rate of around 12–13% on gains is a rough way to reflect long-term capital gains tax above the yearly exemption. For NPS, remember that part of the corpus must buy an annuity, and the pension from it is taxed as income.
Formula. Each month: balance = balance × (1 + annual rate ÷ 12) + contribution. Value after tax = contributions + growth × (1 − tax rate).
Worked example (illustrative). ₹12,500 a month (₹1.5 lakh a year) for 15 years at an assumed 7.1% grows to roughly ₹40 lakh, of which ₹22.5 lakh is your own money. 7.1% is only an example: the PPF rate is reset by the government each quarter, and market-linked funds have no fixed return at all.
Limits. This is a projection, not a forecast. PPF credits interest once a year on the lowest balance between the 5th and the end of each month, so actual figures differ slightly. The investment deductions help only if you choose the old regime. Compare products in the tax-saving investments guide.