Financial Independence, Retire Early — the age your savings rate reaches the corpus, rather than a corpus for an age you pick.
How much more you invest each year, as your pay rises. At 5%, ₹90,000 a month becomes ₹94,500 next year and ₹99,225 the year after. Set it to 0 to keep the amount flat.
Have a particular age in mind? Enter it and a second panel appears below, showing what stopping at that age would take. Leave it blank and the calculator just works out the earliest age.
FIRE stands for Financial Independence, Retire Early. The idea is plain arithmetic: once invested money can fund your expenses for the rest of your life, paid work becomes optional rather than necessary. Two things move the answer — how much of your income you do not spend, and how long it is left to compound.
Most FIRE calculators ask which age you want to stop at, then report whether you are on course for it. This one turns the question around: it takes what you earn and what you spend, and works out the earliest age at which the corpus is reached. The corpus itself is priced exactly as the Retirement Corpus Calculator on this site prices it — expenses grown by inflation, then discounted at the real rate over the years they have to last.
An educational estimate. It assumes steady returns and steady inflation, that everything not spent is invested, and that the corpus is drawn down over the rest of your life. It ignores taxes, EPF/NPS/pension income, health costs and one-off goals. Treat it as a direction, not a guarantee.
The Retirement Corpus Calculator fixes the age and works out the corpus — the same maths, asked the other way round.
In short
This calculator solves for the AGE at which financial independence is reached, instead of the corpus needed by an age you pick. It works out how much of your pay is not spent, prices the corpus required at every future age, projects what you would actually have at that age, and reports the first age where the projection covers the requirement.
Yes. Fill in the optional target age and a second panel appears, showing the corpus required by that age, what these assumptions would actually have built by then, and the shortfall or surplus between the two. It uses the same per-age calculation as the headline answer, so if you enter the age the calculator returned, the required figure matches the corpus it reported exactly.
Because the unknown here is the age, not the corpus. How soon the corpus is reached depends on how fast it builds, which depends on how much of your pay is not spent. Income and expenses together give both the savings rate and the expense base the corpus has to fund.
No. That rule of thumb comes from US historical data over a 30-year retirement. This prices the corpus directly from your own expenses, your own inflation assumption and the number of years it has to last, so the implied withdrawal rate falls out of your numbers instead of being imposed on them.
They answer different questions with the same maths. The retirement calculator fixes the age and reports the corpus; this one fixes what you save and reports the age. Give the retirement calculator the age this one returns, with the same assumptions, and the corpus figures agree exactly.
That is a real result, not an error. On the numbers entered, the projected corpus never catches the amount required at any age up to life expectancy. Changing the amount invested, the return assumed, the expenses or the life expectancy changes it.
Basis for the “subject to market risks” framing: a market-linked return is an assumption, never a guarantee, so the age this produces moves with it.
Where to check the inflation assumption against the published trend, rather than leaving it at this page's default.
Investor-corner explainers on long-term investing and risk disclosures.
This tool gives you a number. These free WealQuest lessons explain the idea it rests on — in English and हिंदी, no sign-up.
This explains the maths behind the tool so you can trust the number. It is educational information, not financial advice.