SIP of ₹10,000 per month for 15 years

What ₹10,000 a month for 15 years can grow to

You invest ₹18 lakh in total (₹10,000 × 180 months). The final value depends almost entirely on the return, so the table shows four scenarios rather than one answer.

Year-by-year growth at 12%

Returns overtake the money you put in during year 11.

The corpus reaches half its final value only in year 11 of 15: compounding does most of its work at the end, which is why stopping a SIP early costs more than the missed instalments.

With an annual step-up

Raising the SIP by 10% every year (₹10,000 a month in year 1, ₹11,000 in year 2 and so on) means investing ₹38.13 lakh and could grow to ₹86.84 lakh at 12%, ₹36.38 lakh more than a flat SIP.

What it is worth in today's money

At 6% inflation a year, ₹50.46 lakh in 15 years buys roughly what ₹21.05 lakh buys today. The 6% is an assumption, not a forecast; change it in the inflation calculator.

Tax if you redeem everything (equity funds)

Selling the whole holding at the end of year 15 at 12% would realise ₹32.38 lakh of long-term gains and ₹8,093 of short-term gains, because the last 12 instalments are held 12 months or less.

Long-term gains above ₹1.25 lakh in a financial year are taxed at 12.5% and short-term gains at 20%, plus 4% cess: about ₹4,06,330 in total here. Splitting redemptions across financial years uses the ₹1.25 lakh exemption more than once.

This applies to equity-oriented funds (STT paid) under the rules for transfers from 23 July 2024. Surcharge, losses and the basic-exemption set-off are not included, and debt funds are taxed differently.