Retirement Calculator

What does saving today mean for the life you can afford later? Project your corpus, see it in today's money, and the monthly income it could sustain.

Your situation

Corpus at retirement
In today's money
Income (4% rule)
Income, today's money
ContributedGrowth
Age-by-age breakdown
AgeContributedGrowthBalance

Reading your projection honestly

Retirement calculators love showing big numbers. The one that matters is smaller: the corpus in today's money. A million in 30 years, at 3% inflation, buys what about 412,000 buys today. That's why this calculator always shows both figures side by side — plan against the inflation-adjusted one.

The second honest number is sustainable income. Using the widely-cited 4% rule, the calculator shows the monthly amount your corpus could support — again both in future currency and today's purchasing power. If the today's-money income doesn't cover the life you want, you have three levers: save more monthly, retire later, or earn a higher return (which usually means accepting more risk).

Why starting age dominates everything

Because growth compounds, each decade you delay costs roughly half the final corpus. A 25-year-old saving 500/month at 7% reaches about double the corpus of a 35-year-old saving the same — not from saving more, but from letting compounding run longer. Try moving the current-age slider and watch the growth band of the chart.

Beyond this calculator

Frequently asked questions

How much money do I need to retire?
A common rule of thumb is 25× your desired annual spending — the inverse of the 4% rule. If you want the equivalent of 2,000 a month today, you need roughly 600,000 in today's money, more in future money once inflation is counted.
What is the 4% rule?
A guideline from historical market studies: withdrawing about 4% of your portfolio in the first year of retirement, then adjusting for inflation, has historically sustained a portfolio for 30+ years. It is a planning benchmark, not a guarantee.
Why show an inflation-adjusted value?
A large number decades from now buys much less than it does today. The calculator converts your projected corpus into today's purchasing power using your inflation estimate, so you can judge whether it is actually enough.
What return and inflation should I assume?
Many planners model 6–9% returns for diversified portfolios and 2–4% inflation in developed economies (higher in some countries). Being conservative on returns and generous on inflation gives a safer plan.
Is this financial advice?
No — it is an educational estimate based on the numbers you enter. For decisions about your retirement, consult a qualified financial adviser.

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