Retirement Calculator
Plan your journey to financial freedom. This calculator helps you estimate the total corpus required to maintain your current lifestyle after retirement, accounting for inflation and investment returns.
Key Inputs
- Monthly Expenses: Your current monthly spending. The calculator projects this forward using inflation.
- Expected Return: The annual rate of return you expect on your investments (e.g., 7-10% for equities).
- Inflation Rate: The rate at which costs rise (typically 3-6%). This significantly impacts your future needs.
Retirement Calculator
Plan your retirement corpus
📐 4% Withdrawal Rule
Corpus = 25× Annual
Expenses
Withdraw 4% yearly for 25+ years of retirement
💡 Tips
• Start early - time is your biggest
asset
• Account for inflation
• Consider healthcare costs
Frequently Asked Questions
A reasonable rule: target 25-30 times your annual expenses at retirement. If you'll spend ₹6 lakh a year (in today's money), and inflate that to retirement age — say ₹15 lakh annually 20 years from now — you'll need a corpus of ₹3.75-4.5 crore. The 25x rule comes from the 4% safe withdrawal idea, adapted for India where you might use 3.5%. Factor in healthcare inflation separately — it runs higher than general inflation. Use the calculator with your current expenses, retirement age, and life expectancy. The number is usually larger than people initially assume.
First, project your retirement-age annual expenses by inflating today's expenses. If you spend ₹50,000 a month now and you're retiring in 25 years, at 6% inflation that becomes around ₹2.14 lakh a month — or ₹25.7 lakh a year. Multiply by 25-30 (or divide by your safe withdrawal rate, typically 3-4%) to get the corpus needed. Around ₹6.4-7.7 crore in this case. Healthcare costs need extra padding — they grow faster than 6%. Build the corpus through SIPs, EPF, NPS, and PPF. The calculator handles the inflation-adjusted target for you.
It depends on your current age and target. Roughly, if you start at 25 with a ₹4 crore goal at 60, you need around ₹7,000 monthly at 12% returns. Start at 35 and the same goal needs about ₹22,000 monthly. Start at 45 and you'd need ₹76,000 — and that's painful. Time is the cheapest leverage you have in retirement planning. A common rule: save at least 15% of gross income for retirement from your 30s onwards. Step up contributions every year. The calculator works backwards from your target and tells you the exact monthly amount.
The classic "4% rule" suggests withdrawing 4% of your starting corpus each year, adjusted for inflation. In India, with higher inflation and longer-term debt returns, a safer rate is 3-3.5%. So a ₹5 crore corpus comfortably supports ₹15-17.5 lakh of annual withdrawals. Withdraw too aggressively and you risk running out by 80; too conservatively and you'll leave a huge legacy unspent. Healthcare costs late in life can spike, so build a 10-15% buffer above your basic withdrawal needs. The calculator can stress-test different withdrawal rates against expected lifespan.
That depends on your starting corpus, withdrawal rate, returns, and inflation. ₹3 crore corpus growing at 7% post-retirement, with annual withdrawals of ₹15 lakh inflating at 6%, lasts roughly 30-32 years. Increase the withdrawal to ₹20 lakh and it might run out in 20-22 years. The interplay between sequence of returns (especially poor early years) and inflation is the biggest risk. Keep 2-3 years of expenses in safe instruments to avoid selling equity during market downturns. The calculator simulates different scenarios — use it conservatively rather than optimistically.
Starting late means contributing more aggressively and possibly working a few extra years. If you're 45 with little saved and want to retire at 60, you might need to invest 35-50% of your income. Maximise EPF, NPS, and equity SIPs. Consider delaying retirement to 65 — those extra 5 years of contributions plus 5 fewer years of withdrawals can shrink the required corpus by 30-40%. Cut high-interest debt first; it competes with your savings. Healthcare insurance becomes critical. Don't take on equity-heavy risk in panic — stick to a balanced portfolio. The calculator shows what's still achievable.
Plan for life expectancy of 85-90 years, even if family history suggests less. Indian life expectancy is rising, and medical advances continue. For someone retiring at 60, that means planning for 25-30 years of withdrawals. Underestimating lifespan is the most common mistake in retirement planning — running out of money at 80 is a real risk. If you have a chronic condition or family longevity history, add 5 years to your default planning age. The calculator lets you toggle expected lifespan. Always plan for the longer scenario; the cost of overestimating is far less than the cost of running out.
Understanding the Retirement Calculator
Worked Example
Aisha, age 32, has $60,000 saved, contributes $1,200/month at 6% real return, retires at 65.
- Years to retirement: 33
- Lump-sum growth: $60,000 × (1.06)^33 = $413,800
- Monthly growth: $1,200/mo for 396 months → ~$1,178,800
- Combined corpus: ~$1,592,600 (today's dollars)
- 4% withdrawal rule → $63,700/yr in retirement income.
Comparison Table
| Start Age | $500/mo at 6% to 65 | $1,000/mo at 6% to 65 | $2,000/mo at 6% to 65 |
|---|---|---|---|
| 25 | $995,000 | $1,991,000 | $3,982,000 |
| 30 | $725,000 | $1,450,000 | $2,900,000 |
| 35 | $502,000 | $1,005,000 | $2,010,000 |
| 40 | $340,000 | $680,000 | $1,360,000 |
| 45 | $214,000 | $429,000 | $858,000 |
Use Cases
- Retirement readiness: are you on track for your target age?
- FIRE planning: compute escape velocity for early retirement.
- Catch-up planning: impact of doubling contributions in your 40s/50s.
- Pension lump-sum decision: compare lump vs annuity using corpus projection.
Glossary
- Corpus
- The total accumulated retirement savings at the date of retirement.
- 4% Rule
- Withdraw 4% of starting balance year 1, then adjust each year for inflation; portfolio survives 30+ years historically.
- FIRE
- Financial Independence, Retire Early — aggressive saving for retirement before traditional age.
- Real Return
- Investment return minus inflation; reflects actual purchasing-power growth.
- Withdrawal Rate
- % of corpus withdrawn yearly in retirement; lower = safer.
Sources & References
- Social Security Administration — Official US benefit estimator and account portal.
- Trinity Study — Origin of the 4% withdrawal rule.
- Vanguard 'How America Saves' — Annual report on US retirement savings benchmarks.
Last reviewed: May 2026