Millionaire Calculator

Putting a number on the dream

"I want to be a crorepati" is a fine ambition, but it is not a plan. A plan needs a number: how much must leave your account every month to get there, given your time frame and a reasonable return? That is exactly what this calculator produces. You set the target — ₹1 crore by default — the time you have, an expected return, and anything you have already saved. It hands back the single figure that matters: the monthly SIP required.

The engine works backwards from your goal. First it grows your current savings forward at the expected return, because that money keeps compounding whether or not you add to it. Whatever the goal that grown-up amount already covers is subtracted, leaving a shortfall. Then the goal-SIP formula solves for the exact monthly instalment that turns that shortfall into your target on schedule. The more you have saved today, the smaller the monthly commitment — which is why the tool rewards anyone who has already started.

Time is the biggest lever

The most striking thing you will notice is how heavily the time horizon drives the answer. Because compounding is exponential, stretching the deadline shrinks the monthly amount dramatically. Reaching ₹1 crore in 15 years at 12% takes around ₹20,000 a month; give yourself 25 years and the figure falls to well under half that. This is the single most important lesson of long-term investing: starting early beats investing more later. A modest SIP begun in your twenties can outpace a much larger one begun in your forties.

Keep the assumptions honest

Two caveats keep the plan realistic. First, the calculation assumes a steady annual return, but markets are lumpy — some years soar, others slump. The required SIP is a disciplined baseline, not a guarantee, so review your progress each year and adjust. Second, the target sits in today's rupees. A ₹1 crore corpus fifteen years out will buy noticeably less than ₹1 crore buys now, so consider setting a higher goal, or adding a yearly step-up to your SIP, to protect your real purchasing power. Do that, invest through low-cost direct plans, and stay the course through market dips — and the number this calculator gives you becomes a genuine path to the goal.