Retirement Calculator
Find out how much corpus you need at retirement and how much to save monthly
functions Retirement Formulae
Corpus = PV of 25-yr inflation-adjusted retirement expenses
Monthly savings = SIP for corpus in working years
Real rate = (1 + return) / (1 + inflation) − 1
Real-Life Guide to Using the Retirement Planner
Corpus needed for retirement. Use the examples and checks below to turn the number into a practical decision.
When this calculator is useful
Anyone in their 30s to 50s who wants to estimate the total corpus needed by a target retirement age, based on current monthly expenses, expected inflation, and the number of years the corpus must last.
For most people, the best way to use the Retirement Planner is to try the real case first, then change one input at a time. That makes the trade-off visible. For example, with a loan calculator you can change tenure while keeping the same rate; with an investment calculator you can change return assumption while keeping the same monthly contribution; with a health, education or measurement calculator you can check how much one input changes the final category.
The result should answer a practical question: Can I afford this? How much should I save? Is this score enough? Is this measurement within range? What is the safer or cheaper option? If the output does not answer the decision clearly, adjust the inputs until the scenario matches your real situation.
Practical Advice
Use the Retirement Planner as a planning tool, not just a number generator. Write down the inputs you used, because the final answer is meaningful only when you remember the assumptions behind it.
If the decision affects money, health, tax, safety, academics or legal compliance, keep a second check ready. That second check may be a bank quote, payslip, official rule, prescription, site measurement, mark sheet or invoice.
Common Mistakes
- Using today's monthly expense figure directly instead of inflating it to the retirement year — a ₹50,000/month expense today becomes over ₹1.8 lakh/month in 25 years at 6% inflation.
- Assuming a flat post-retirement return equal to pre-retirement equity returns, when a retiree's portfolio is usually shifted toward safer, lower-yielding debt instruments.
- Planning for only 15-20 years of retirement instead of 25-30 years, which risks exhausting the corpus while the retiree is still in their late 70s or 80s.
- Ignoring that healthcare cost inflation typically runs well above general inflation, leaving an underfunded medical buffer in the later retirement years.
- Entering existing retirement assets like EPF, PPF, or NPS balances as zero, which overstates the "additional corpus needed" figure the calculator produces.
How to Interpret Results
The result shows the lump-sum corpus required at retirement and the monthly SIP needed to reach it — treat the SIP as a minimum starting figure that should be revisited every few years as your expenses, existing savings, and market returns evolve.
A good interpretation looks at both the main result and the supporting values. If a page shows totals, ratios, categories, schedules or warnings, read those together instead of focusing only on the biggest number.
Retirement Planner FAQs
Useful answers for interpreting the output, avoiding mistakes and using the result responsibly.
What is a Retirement Calculator?
A retirement calculator helps you estimate how large a corpus you must accumulate by the time you stop working, so your savings can fund your lifestyle for the next 25–30 years without running out. It accounts for the most critical variable in retirement planning — inflation — by projecting what your current monthly expenses will cost in the future.
This calculator uses the Present Value of an inflation-adjusted annuity to find the exact corpus needed, then applies the SIP (annuity-due) formula to show you the monthly savings required to reach that corpus during your working years.
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