A monthly income from your own savings.SWP calculator: how long monthly withdrawals could last.

How to use the SWP calculator

1. Enter the amount you start with, for example your retirement corpus or a large sum you’ve invested.
2. Enter how much you want to withdraw each month, and for how many years.
3. Pick an expected return a year on the money that stays invested. Then see the total withdrawn and the balance left, or the month the money runs out.

How to read your result

Total withdrawn is everything you take out over the period. Balance left is what may still be invested at the end. If the withdrawals are too large for the corpus, you’ll see the month the money may run out instead.

For example, ₹50 lakh with ₹30,000 a month taken out for 20 years, at an assumed 8% a year, gives you ₹72 lakh in all and could still leave about ₹68 lakh. Take ₹50,000 a month instead, and the money may run out in about 13 years and 8 months.

Your withdrawal stays the same every month, but prices won’t, so the same amount buys a little less each year. It helps to start with a modest withdrawal and review it every year. Mutual fund returns are market-linked and not guaranteed, and a fall in the early years hurts more, because you keep withdrawing while values are low. See how we plan a monthly income on our retirement planning page.

How the SWP calculator works

Each withdrawal is taken at the start of the month, and the rest keeps growing at the monthly rate until the next one. This repeats every month for the years you choose, or until the money runs out. B is the starting amount, W is the monthly withdrawal, i is the yearly rate divided by 12 and n is the number of months.

Each month: Balance = (Balance − W) × (1 + i); After n months: Balance = B × (1 + i)^n − W × (1 + i) × ([1 + i]^n − 1) ÷ i; Total withdrawn = W × months paid