SIP for Retirement Calculator
Estimate your retirement corpus and the monthly SIP that may help you work towards it.
Illustrative estimate based on your inputs.
| Year from now | Estimated existing savings | Estimated SIP value | Total projected value |
|---|
Convention: the annual return is treated as a nominal rate compounded monthly; monthly SIP contributions are assumed to be invested at the beginning of each month. Inflation is compounded annually.
Planning for retirement starts with one practical question: how much should you invest each month to support the life you want later? The SIP for retirement calculator estimates a retirement corpus from your current expenses, expected inflation, investment horizon and assumptions about returns.
What does a SIP for retirement calculator do?
A systematic investment plan (SIP) lets you invest a fixed amount at regular intervals, often monthly. This calculator works backwards from a retirement target: it estimates future monthly expenses, converts them into an indicative corpus using an assumed withdrawal rate, accounts for existing savings, and estimates the SIP needed to bridge any shortfall. A SIP for retirement calculator is useful for exploring this gap, but its output depends on the inputs you choose. Use the SIP for retirement calculator to test a few realistic combinations rather than relying on one projection.
For example, expenses of ₹50,000 per month today will not necessarily buy the same lifestyle decades from now. Inflation can raise the amount you need, while investment returns may help your savings grow. Both assumptions matter, and neither is certain. The SIP for retirement calculator lets you test how changing these assumptions affects your estimate.
How to use the SIP for retirement calculator
- Enter your current age and planned retirement age. The difference gives the time available to invest.
- Add monthly expenses in today’s rupees. Include the recurring household costs you expect your retirement savings to fund.
- Choose an inflation assumption. This estimates how expenses may rise before retirement.
- Enter an expected annual investment return. Treat it as a scenario to test, not a forecast.
- Set an annual withdrawal rate. The calculator uses this assumption to estimate the corpus required to fund annual expenses. It is not a guarantee that withdrawals will last.
- Include existing retirement savings. The model projects their future value under the same return assumption.
- Calculate and review the result. Compare the monthly SIP with your budget and test more than one scenario.
How is the retirement SIP estimated?
The calculation has three main stages. The SIP for retirement calculator follows these steps to estimate a monthly contribution. First, it estimates what today’s monthly expenses could become by the retirement date. Second, it estimates a target corpus using the selected withdrawal rate. Third, it subtracts the projected value of existing savings and calculates the monthly contribution needed to cover the remaining gap. These steps explain how the SIP for retirement calculator turns a retirement goal into an estimated monthly contribution. The SIP for retirement calculator is most useful when you understand the assumptions behind that contribution.
1. Estimate monthly expenses at retirement
This is a simplified inflation projection. Your actual costs may rise faster or slower, and different expenses may experience different inflation rates. The SIP for retirement calculator uses one inflation assumption for this estimate.
2. Estimate the target retirement corpus
For example, if projected expenses are ₹1,00,000 per month and the assumed withdrawal rate is 4%, the simple formula produces a target of ₹3 crore: ₹12 lakh in annual expenses divided by 0.04. This is an illustrative calculation, not a universal rule for how much every retiree needs.
3. Estimate the monthly SIP
The calculator projects the existing savings forward, subtracts that amount from the target corpus, and estimates the monthly SIP required to fill the gap. It assumes a nominal annual return compounded monthly and contributions invested at the beginning of each month.
What can change your required SIP?
| Factor | What it changes | What to test |
|---|---|---|
| Retirement age | A longer accumulation period gives contributions more time to compound. | Compare retiring at 58, 60 and 62 if those dates are realistic for you. |
| Inflation | Higher inflation increases the projected cost of your retirement lifestyle. | Run a lower, base and higher inflation scenario. |
| Expected return | A higher assumed return can lower the calculated SIP, but may require taking more risk. | Do not rely on only the most optimistic scenario. |
| Existing savings | Savings already set aside for retirement may reduce the additional amount needed. | Include only money genuinely earmarked for retirement. |
| Withdrawal rate | A lower withdrawal rate implies a larger target corpus for the same expenses. | Test multiple rates and seek qualified guidance for a sustainable plan. |
Why starting earlier can matter
Time can make a meaningful difference because returns may compound on both your contributions and earlier gains. Starting earlier also gives you more months to contribute, which can reduce the monthly amount required under the same assumptions. That does not mean an early start removes market risk; it simply gives the plan more time to develop.
If the calculated SIP is currently too high, explore realistic levers rather than assuming a higher return will solve the problem. You might increase contributions gradually as income grows, review the retirement age, adjust the spending target, or account for other reliable retirement income. Each change has trade-offs and should be considered in context. Revisit your SIP for retirement calculator estimates whenever your income, expenses or retirement timeline changes materially. A fresh SIP for retirement calculator estimate can help you see whether your current contribution still matches your revised goal.
Common retirement-planning mistakes
- Using today’s expenses without inflation. A future retirement budget should reflect the time remaining until retirement.
- Assuming a smooth return every year. Real markets fluctuate, and losses close to retirement can have a disproportionate effect.
- Ignoring healthcare and one-off costs. Build a separate buffer for expenses that do not fit neatly into a monthly budget.
- Counting all savings as retirement money. Keep emergency funds and near-term goals separate where appropriate.
- Never updating the plan. Review the inputs when your income, family responsibilities, health needs or retirement date changes.
What this calculator does not include
This calculator is intentionally a simplified starting point. It does not calculate a personalised asset allocation or recommend specific mutual funds. It also does not model taxes, investment costs, pension income, EPF/NPS benefits, annuity income, changing withdrawal amounts, or market returns in individual years. The selected return and inflation rates are user-entered assumptions, not live market data.
For a more complete retirement plan, consider separate estimates for healthcare, housing, dependants, major purchases and income that may continue after retirement. A qualified financial adviser can help assess the assumptions and the suitability of a withdrawal strategy for your circumstances. Treat the SIP for retirement calculator as one planning input rather than a complete retirement plan. You can use the SIP for retirement calculator alongside a separate budget and retirement-income review.
Related calculators and guides
For investor education and risk awareness, consult SEBI’s investor education resources and AMFI’s mutual fund investor resources. Verify that all internal links above are published and live before launch.
Frequently asked questions
How much SIP is needed for retirement?
The SIP for retirement calculator estimates an amount based on your retirement age, current expenses, inflation assumption, expected return, existing savings and selected withdrawal rate. Enter your own assumptions to get an illustrative monthly amount; the result is not a guarantee.
What return should I enter for a retirement SIP?
There is no single return that applies to every investor or portfolio. When using the SIP for retirement calculator, test more than one return assumption. Use multiple scenarios, including a more conservative one, and remember that actual returns vary over time. The result is sensitive to this input. Review the SIP for retirement calculator output again if your return assumption changes. When using the SIP for retirement calculator, treat the return as an assumption rather than a prediction.
Does the calculator include inflation?
Yes. The SIP for retirement calculator increases your current monthly expenses by the annual inflation assumption for each year until retirement. It does not model different inflation rates for individual expense categories.
What is the withdrawal rate?
It is the percentage of the retirement corpus assumed to be withdrawn each year. The calculator divides projected annual expenses by this rate to estimate a target corpus. This simplified method does not guarantee that the corpus will last for a particular number of years.
Can I use EPF, NPS or pension savings in this calculation?
You can include a current value in existing retirement savings if it is genuinely earmarked for retirement. This calculator does not model the separate rules, contributions, tax treatment or payout features of EPF, NPS or pension products.
Educational disclaimer: This content is for general education only and is not personalised financial advice. Consider consulting a SEBI-registered investment adviser before making investment decisions. Read our disclaimer. Mutual fund investments are subject to market risks. Read all scheme related documents carefully before investing.
Last updated: 18 October 2026. Review the assumptions and methodology periodically; the calculator uses editable assumptions rather than live rates.