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Retirement Calculator

Find out how much corpus you need to retire comfortably and how much to save every month — free, instant, no signup required.

Retirement Corpus Calculator
Corpus Needed at Retirement
₹0
Monthly Savings Required
₹0
Years to Retire
0 yrs
Future Monthly Expense
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What is Retirement Planning?

Retirement planning is the process of determining how much money you will need to maintain your desired lifestyle after you stop working, and then creating a strategy to accumulate that amount. It involves estimating your future expenses, accounting for inflation, calculating investment returns, and figuring out how much you need to save every month starting today.

A retirement calculator does all this arithmetic for you instantly. By entering a few key variables — your current age, target retirement age, current monthly expenses, expected inflation rate, and expected investment return — you get a clear picture of your retirement corpus goal and the monthly savings needed to reach it.

Why Start Retirement Planning Early?

Time is the single most powerful factor in retirement planning. Starting just 5 years earlier can make a difference of tens of lakhs in your final corpus, thanks to the compounding effect. Consider this: if you need ₹5 crore at age 60 and you start at 25 (35 years away), your monthly SIP at 10% return would be around ₹15,000. If you delay starting to age 35 (25 years away), you would need over ₹44,000 per month to reach the same goal — nearly 3 times more.

The earlier you begin, the less financial stress each monthly contribution creates, and the more your investments do the heavy lifting through compounding returns.

Retirement Corpus Calculation Formula

This calculator uses a two-step approach — first estimating your inflation-adjusted expenses at retirement, then calculating the lumpsum corpus needed to sustain those expenses for 25 years.

Step 1 — Future Monthly Expense:
FME = CurrentExpense × (1 + inflation/100)^years

Step 2 — Corpus Needed (present value of 25-year annuity):
Corpus = AnnualExpense × [(1 − (1 + realReturn)^−25) / realReturn]

Where:
  realReturn = [(1 + return/100) / (1 + inflation/100)] − 1
  AnnualExpense = FME × 12

Step 3 — Monthly Savings Required (SIP formula):
MonthlySavings = Corpus × (r/12) / [(1 + r/12)^(n) − 1]
Where r = expected annual return / 100, n = years to retire × 12

How to Use This Retirement Calculator

  1. Enter your current age: This sets the starting point for calculating how many years you have until retirement.
  2. Set your retirement age: The age at which you plan to stop working. The default is 60, but many people target 55 or even 50 for early retirement.
  3. Enter current monthly expenses: This is what you spend today on all living costs. The calculator will inflate this figure to estimate what you will spend at retirement.
  4. Set the inflation rate: India's average long-term inflation has been around 6%. You can use a higher figure (7–8%) to be conservative.
  5. Enter your expected investment return: This is the annual return you expect from your investments (equity mutual funds, NPS, etc.) during the accumulation phase. Historically, equity has delivered 10–12% CAGR in India.
  6. Read your results: The calculator shows your corpus goal, required monthly savings, years to retirement, and inflation-adjusted future monthly expense.

Tips for a Comfortable Retirement

  • Account for healthcare costs: Medical expenses rise sharply with age. Consider adding 20–30% extra to your retirement corpus to cover healthcare beyond regular expenses.
  • Diversify your portfolio: During the accumulation phase, maintain a higher equity allocation for growth. Gradually shift to debt instruments as you approach retirement to protect the corpus.
  • Use NPS and PPF for tax-efficient retirement savings: Both instruments offer significant tax benefits and are specifically designed for long-term retirement savings.
  • Factor in non-working spouse: If your spouse does not have an independent income or retirement savings, your corpus target should be calibrated for both of you.
  • Reassess every 3–5 years: Life circumstances change — income grows, expenses shift, goals evolve. Review your retirement plan regularly and adjust contributions accordingly.

Advantages of Using a Retirement Calculator

  • Instant, accurate projections: See the impact of inflation and compounding in real time without complex manual calculations.
  • Scenario planning: Adjust any variable to explore "what if" scenarios — what if you retire 5 years earlier, or reduce current expenses, or earn a higher return?
  • Goal clarity: Instead of a vague sense that you "need to save more," you get a specific monthly savings number to target.
  • Free and private: No signup, no data collection. All calculations run in your browser and your financial data stays on your device.

Frequently Asked Questions

The retirement corpus you need depends on your current monthly expenses, how many years you have until retirement, expected inflation, and how long your retirement will last. A common rule of thumb is 25 times your annual expenses at retirement (adjusted for inflation). For example, if your inflation-adjusted annual expense at retirement is ₹12 lakh, you need a corpus of ₹3 crore. This calculator applies this logic with a real-return adjustment for a more accurate estimate.
India's long-term average CPI inflation has been around 6–7%. For retirement planning, it is generally advisable to use a slightly higher rate — around 6–8% — to be conservative. Healthcare inflation in India has historically been higher than general inflation (around 10–12% per year), so if you want to account for rising medical costs, use 7–8% as your planning inflation rate. Being conservative on inflation means your corpus estimate will be higher, which is a safer outcome than underestimating.
For the accumulation phase (investing today to build your corpus), if you primarily invest in equity mutual funds or NPS Equity (Tier I, Asset Class E), a long-term CAGR of 10–12% is a reasonable assumption based on historical data. For more conservative mixed portfolios (equity + debt), 8–10% is appropriate. Remember that these are assumptions — actual market returns will vary year to year. Using a slightly conservative rate (9–10%) gives you a larger savings target, which provides a buffer against underperformance.
This calculator conservatively assumes 25 years of retirement (from age 60 to 85). With improving healthcare and life expectancy in India, planning for at least 25–30 years is prudent. If you plan to retire early — say at 50 — you should plan for 35 years of retirement to age 85. A longer retirement horizon means you need a larger corpus, but it also means your investments have more time to grow if you remain partially invested even after retirement.