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Work out the corpus your retirement actually needs, see whether your current saving gets you there, and find the monthly amount that closes any gap — with an interactive timeline running from today to the end of your plan.
Step 1
Set your three ages
Your age now, the age you stop earning, and the age you are planning to. Longer is the safer error.
Step 2
Describe your spending, not your income
Retirement is funded against what you spend. Enter today's monthly household spending and the share of it you will still need.
Step 3
Enter what you have and what you add
Existing retirement savings plus the monthly amount you invest, including any annual increase.
Step 4
Compare the two numbers
The corpus you need against the corpus you reach. If there is a gap, the planner tells you the monthly amount that closes it.
Short by ₹50,20,695
₹4,38,45,286
Your plan reaches ₹4,38,45,286 by age 60, but this retirement needs ₹4,88,65,981.
Invest each month
₹29,123
That is ₹4,123 a month more than you are investing now.
Monthly spending at 60
₹1,92,428
The same lifestyle costs this much once inflation has had 20 yrs to work.
Retirement planning is one calculation run twice. First your spending is inflated forward to the day you retire. Then every future withdrawal is discounted back to that day, and the total is the corpus you need standing there on your last day of work.
Corpus = Σ Wₖ ÷ (1 + r)ᵏ⁻¹, where Wₖ = E × (1 + i)ʸAmount needed at retirement
The present value, at your retirement date, of every withdrawal you will make.
Withdrawal in month k
Your monthly spending need in that month, net of any pension or rental income.
First monthly withdrawal
Today's spending × the share you still need × (1 + inflation) raised to the years until you retire.
Monthly return in retirement
Your post-retirement annual return divided by 12 and by 100.
Annual inflation
Raises the withdrawal on every anniversary.
Years into retirement
Held constant within each year, so the withdrawal steps up once a year.
Discounting each withdrawal individually rather than using a textbook annuity formula matters more than it sounds. The usual annual annuity approximation overstates the corpus by roughly 5%, because withdrawing monthly leaves money invested longer than withdrawing a year at a time. Working the other way, the contribution needed is found by inverting the same arithmetic: the future value of a monthly contribution is linear in that contribution, so one division gives the exact amount that lands on the target.
It inflates today’s monthly expenses to retirement, estimates a corpus that could fund withdrawals until the end age you type, grows money you already have, and solves for a monthly contribution to close the gap — if inflation and both return assumptions hold. They will not hold exactly.
A comfortable expense today is a different rupee amount at retirement. Change inflation by one percentage point and watch the monthly investment jump. That sensitivity is the lesson. Walkthroughs: how much to save and inflation and corpus. Method: methodology — retirement.
Example settings many people try first: age 35, retire at 60, plan to 90, ₹60,000 a month today, 6% inflation, 10% before retirement, 7% after, some existing savings. Then change only inflation to 7%. The planner is working if that hurts. It is not a certification that you can stop working.
Answers about the retirement planner.
Continue exploring adjacent tools in this topic.
Guides that explain the ideas behind these numbers.
There is no single percentage that fits every household. There is a method: today’s expenses, inflation, working years, years in retirement, and two return assumptions — all of which can be wrong.
Inflation is the reason a comfortable monthly expense today is not the number you should fund at retirement. Small rate differences become large corpus differences over decades.
Compounding is interest on interest — or returns on previous returns. Time and the rate you assume do most of the work. Markets do not compound in a straight line.
The three schemes look interchangeable and behave very differently. One is chosen for you, one is entirely voluntary and one hands most of your corpus to an annuity provider. Understanding which is which decides how much you end up with, and how much of it you can spend.
These figures are estimates based on the values and assumptions you enter. Market returns are not guaranteed. Tax, brokerage and other rules can change. Finaura is an educational tool, not personalised financial, tax, investment or legal advice. Confirm important decisions with the relevant institution or a qualified professional.