Retirement Calculator
How much you need on the day you retire, and how far your savings get you towards it
Corpus Needed at Retirement
₹6,87,50,102
- Projected Corpus
- ₹5,02,79,099
- Shortfall
- ₹1,84,71,003
Enough to draw ₹2,87,175 a month from age 60, rising with inflation, until 85.
How it adds up
- Years to retirement
- 30
- Years in retirement
- 25
- Monthly expenses at retirement
- ₹2,87,175
- Real return in retirement
- 1.89% p.a.
- Savings so far, grown
- ₹1,49,79,961
- Running investment, grown
- ₹3,52,99,138
- Additional monthly SIP to close the gap
- ₹5,233
- Or a lump sum invested today
- ₹6,16,524
- Corpus needed
- ₹6,87,50,102
Corpus needed, by source
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How this is calculated
Formula
corpus = E × [(1 − (1 + i)⁻ⁿ) ÷ i] × (1 + i)
- E
- = monthly expenses in the first month of retirement
- i
- = real monthly return = Fisher real rate ÷ 12
- n
- = months in retirement
With your numbers
- 1Inflate today’s expensesE = expenses × (1 + inflation)^years to retirement₹50,000 × (1 + 6.0%)^30 = ₹2,87,175
- 2Real return in retirement(1 + post-retirement return) ÷ (1 + inflation) − 1(1 + 8.0%) ÷ (1 + 6.0%) − 1 = 1.89%; monthly i = 0.001572
- 3Present value of the withdrawalsE × [(1 − (1 + i)⁻ⁿ) ÷ i] × (1 + i)₹2,87,175, n = 300 → ₹6,87,50,102
- 4What you already have, grownsavings × (1 + pre-retirement return)^years + SIP future value₹1,49,79,961 + ₹3,52,99,138 = ₹5,02,79,099
- The trailing × (1 + i) makes this an annuity-due: each month’s expenses are withdrawn at the start of the month, the mirror image of a SIP’s instalment going in at the start.
- The real return uses the Fisher relation. Subtracting inflation from the return instead overstates it, and understates the corpus needed.
- The additional SIP is level for the whole period. A SIP that steps up with your salary can start lower — try the SIP calculator’s step-up.
- Tax on withdrawals is not modelled, and nothing here is a recommendation of any product.
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