About the Retirement Calculator
Tezmy's Retirement Calculator grows your current savings and monthly contributions until the age you want to retire, then shows how much monthly income that pot can pay until the age you plan for. It answers three questions in one go: how much you will have, whether it is enough for the income you want, and, if it is not, how much more to save each month. Everything is shown in today's money as well as future money, so the numbers mean something after inflation. It is an estimate based on the steady rates you enter, not a forecast, and it ignores tax, fees and pensions paid by the state or an employer.
Updated October 2026
How to use the Retirement Calculator
- 1Enter your age, the age you want to retire and the age you want your money to last until.
- 2Fill in your savings today, what you add each month and, if you like, how much that amount rises each year.
- 3Set the yearly return before and after retiring, the inflation rate and the monthly income you would like in today's money.
- 4Read the savings at retirement, the income they can pay, and the surplus or shortfall with the extra monthly saving needed.
How the estimate is built
Until you retire, your savings grow by the yearly return, worked out month by month, and your monthly contribution is added at the end of each month. If you enter a yearly raise, the contribution goes up by that percent each year.
After you retire, the calculator treats the pot as a fund that pays a monthly income for the years you plan for. Because the income is meant to keep its buying power, the rate that matters is the return after retirement compared with inflation. A return of 4% with inflation of 2.5% leaves a real return of about 1.5%.
What moves the result most
- Time: each extra year of saving adds a contribution and lets the whole pot compound for longer. Retiring two years later often helps more than saving a little more.
- The return you assume: a difference of one percentage point over thirty-five years changes the final pot by a large amount, so try a low and a high value.
- Inflation: higher inflation shrinks the value of the pot in today's money and makes the income goal more expensive in future money.
- The age you plan to reach: paying out for thirty years instead of twenty spreads the pot thinner. Planning past average life expectancy is prudent.
- Your yearly raise: if your pay rises, raising your saving with it has a strong effect over decades.
Using the numbers sensibly
Run the calculator a few times with different returns and retirement ages rather than trusting one answer. If the result is a shortfall, look at three levers: save more, retire later or plan for a lower income. The extra monthly saving shown gives you a direct target for the first.
Treat it as a planning aid. It assumes constant returns, ignores tax, fees and sudden costs, and does not know about pensions from the state or an employer. For decisions about a real pension, talk to a qualified adviser. Retirement plans work best when you test more than one idea. See how steady investing grows with the Compound Interest Calculator and the SIP Calculator, check what a goal is worth later with the Future Value Calculator, and use the Inflation Calculator and the Savings Goal Calculator to keep the target realistic.
Features
- Separate returns before and after retirement
- Inflation applied, with results in today's money
- Optional yearly increase in your monthly saving
- Shows surplus or shortfall against your income goal
- Tells you the extra monthly saving that closes a gap
- Any currency symbol, Indian digit grouping for ₹
Frequently asked questions
How much do I need to retire?
It depends on the income you want and how long it must last. Enter the monthly income you want in today's money and the age you plan to reach, and the calculator shows the savings you would need on the day you retire, in future money.
What return should I enter?
Use a cautious long-run figure. Many planners use somewhere around 4% to 7% a year for a mixed portfolio before retirement and a lower one after, when money is usually moved into safer holdings. The calculator treats the rate as a steady yearly rate, which real markets never are.
Why does it show today's money?
Prices rise over the years, so a large number decades from now buys less than it looks. Dividing by inflation shows what the balance and the income would feel like if you spent them today, which is easier to judge.
How is the income after retiring worked out?
The pot is paid out in equal monthly amounts in today's money, rising with inflation, so that it reaches zero at the age you plan for. The return after retirement, less inflation, sets how long it lasts.
What does the extra monthly saving mean?
It is the flat amount you would need to add every month, starting now, for the pot to reach the savings required for your income goal. It assumes the same return before retirement and does not include the yearly raise.
Does it include state pensions, tax or fees?
No. Add any guaranteed pension to your income separately by lowering the income you ask of your savings. Tax and investment fees would reduce the result, so a little caution in the return you enter is wise.
Is my data saved or sent anywhere?
No. The calculation runs in your browser and nothing is stored or uploaded.