What if you retire at 55, 60 or 65?
| Retirement Age | Required Corpus | Expected Corpus | SIP Needed |
|---|
Impact of retiring at different ages
| Retire at | Years Left | Required Corpus | Expected Corpus | SIP Needed |
|---|
How is this calculated? (Transparent formulas)
1. Future value of a lump sum
FV = PV × (1 + r)n
where PV is present value, r is annual return rate, n is number of years.
2. Future value of monthly SIP (end-of-month)
FV = P × [((1 + i)n – 1) / i]
where P is monthly investment, i = annual rate / 12, n = total months.
3. Inflation adjustment
Future amount = Today’s amount × (1 + inflation)years
4. Required retirement corpus (finite period, inflation-adjusted withdrawals)
We calculate the present value (at retirement) of a growing annuity of monthly withdrawals that increase with inflation, discounted at the post-retirement return rate.
5. Sustainable withdrawal / pension estimate
Starting from the corpus, each month we apply return, then subtract the inflation-adjusted withdrawal, and check whether the corpus lasts for the chosen duration.
Assumptions: Constant returns & inflation, monthly compounding, end-of-month cash flows, no taxes/fees, no post-retirement contributions. These are mathematical estimates only.
Disclaimer: Investment returns are market-linked and actual returns may differ significantly from the rates you enter. This calculator is for educational and illustrative planning purposes only and does not constitute investment advice, a guarantee of returns, or a recommendation to buy or sell any financial product. Consult a qualified financial advisor for personalised advice.
Retirement Planning Calculator – Estimate Your Corpus, SIP & Pension Needs
Planning for retirement in India involves more than guessing a round number. Inflation erodes purchasing power, investment returns compound over decades, and the length of retirement can easily exceed 20-30 years. This free Retirement Planning Calculator helps you estimate the corpus you may need, the monthly SIP required to get there, a sustainable withdrawal (pension-like) income, and the impact of retiring earlier or later – all based on the assumptions you enter.
What is a retirement planning calculator?
A retirement planning calculator is a tool that converts your current age, savings, monthly investments, expected returns and inflation into an estimated retirement corpus and income need. It answers practical questions such as how much money you need to retire, how much to invest every month via SIP, whether your corpus will last, and what changes if you retire at 55 instead of 60.
How much retirement corpus do you need?
There is no single correct number. A useful starting point is the corpus required to support your desired monthly expenses (in today’s rupees), adjusted for inflation until retirement and then withdrawn over your expected retirement years while the remaining balance continues to earn a post-retirement return. Use the Retirement Corpus tab above with your own numbers.
How inflation affects retirement planning
Even moderate inflation of 5-6% per year doubles prices in roughly 12-14 years. Over a 30-year working life, ₹50,000 of monthly expenses can become ₹2-3 lakh or more in nominal terms. This calculator applies inflation both to the income you will need at retirement and to post-retirement withdrawals.
How to calculate retirement corpus
- Project today’s desired monthly income forward to retirement age using expected inflation.
- Estimate how many years you will need income (life expectancy – retirement age).
- Calculate the present value (at retirement) of that stream of inflation-adjusted withdrawals, discounted at the expected post-retirement return.
- Project your current savings and future SIPs to the same date and compare for surplus or shortfall.
How much should you invest every month for retirement?
Once the required corpus and the contribution of existing savings are known, the remaining shortfall can be funded by a monthly SIP. The calculator solves for the SIP amount that compounds to the shortfall by retirement age under the return rate you assume.
What is the difference between retirement corpus and pension?
A retirement corpus is a lump-sum amount of savings and investments. A pension is a regular income stream. This calculator estimates a sustainable withdrawal from a corpus; it does not guarantee a pension or recommend any specific product.
How does SIP help with retirement planning?
SIPs let you invest a fixed amount every month. Over long periods, rupee-cost averaging and compounding can build a substantial corpus. Related tools: SIP Calculator, Compound Interest Calculator.
How long can a retirement corpus last?
Longevity depends on starting corpus, monthly withdrawal size, return and inflation. The Withdrawal tab runs a month-by-month simulation under the assumptions you enter. Real outcomes can differ due to market volatility.
What happens if you retire early?
Retiring earlier shortens the accumulation period and lengthens the withdrawal period, raising both required corpus and monthly SIP. Use the Early Retirement tab and What-if tables to compare ages side by side.
How should someone use this calculator?
- Start with the Retirement Corpus tab using realistic assumptions.
- Note required corpus and SIP needed for any shortfall.
- Experiment with different SIP amounts in the SIP tab.
- Stress-test withdrawals in the Pension / Withdrawal tabs.
- Compare early retirement scenarios if relevant.
- Revisit as your savings and goals change.
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Frequently Asked Questions
How much money do I need to retire in India?
It depends on your desired lifestyle, expected inflation, investment returns and how long you expect to live after retirement. Use the Retirement Corpus tab above with your own numbers for a personalised estimate.
How is retirement corpus calculated?
First inflate today’s desired monthly income to the retirement year. Then compute the present value of a series of monthly withdrawals that grow with inflation, discounted at the post-retirement return. That present value is the required corpus.
How much should I invest every month for retirement?
Once the required corpus and existing savings contribution are known, the remaining shortfall can be funded by a monthly SIP. The calculator solves for that amount under the return rate you assume.
Can I retire at 50?
Mathematically yes if you have (or can still accumulate) a large enough corpus for 30-40 years of withdrawals. Early retirement sharply raises the required monthly investment. Use the Early Retirement tab to see the numbers.
How does inflation affect retirement savings?
Inflation reduces purchasing power. This calculator adjusts both the income target and post-retirement withdrawals for the inflation rate you enter.
What is the difference between pension and retirement corpus?
A retirement corpus is a stock of savings. A pension is a flow of regular income. This tool estimates withdrawals; it does not sell or guarantee any pension product.
How long will my retirement corpus last?
It depends on starting amount, monthly withdrawal, return and inflation. The Withdrawal tab projects this under constant-rate assumptions. Treat the result as illustrative.
Can I use this calculator for SIP investments?
Yes. The Retirement SIP tab projects the future value of a monthly SIP plus existing savings and compares it with the corpus needed for your income goal.
Can I change the expected return and inflation assumptions?
Yes. Every tab lets you set your own expected return and inflation rate so you can see how sensitive your plan is to these assumptions.
Is this calculator free and does it store my data?
Yes, it is free. All calculations run entirely in your browser. No data is sent to a server or stored by this page.