SWP Calculator: Monthly Withdrawal & Corpus Longevity

Use this free SWP calculator to find out how much monthly income you can withdraw from your investment, how long your corpus will last, and what happens when inflation is applied. Enter your total investment, monthly withdrawal amount, expected return rate and time period. The calculator runs month-by-month projections and shows a year-wise cash flow table, so you can see exactly when your corpus may run out or how much remains at the end of your plan. No login, no sign-up, and your data never leaves your browser.

What Is a Systematic Withdrawal Plan (SWP)?

A Systematic Withdrawal Plan, or SWP, is a facility offered by mutual funds that lets you withdraw a fixed amount from your investment at regular intervals, usually every month, while the remaining balance stays invested and continues to earn market returns.

Think of it as the reverse of a SIP. A SIP moves money from your bank account into an investment every month to build wealth. An SWP moves money from your investment back to your bank account every month to create income.

Here is the basic mechanism. You invest a lump sum in a mutual fund. You instruct the fund house to redeem a fixed rupee amount every month. That amount is credited to your bank account on a fixed date. The remaining units stay invested and keep growing at the fund’s NAV.

SWP is most commonly used for:

• Retirement income that replaces a monthly salary
• Supplementing pension for senior citizens
• Creating passive income from a lump sum such as a retirement payout, property sale or inheritance
• Funding recurring expenses like rent, school fees or EMIs
• Tax-efficient income compared to fully taxable FD interest

What This SWP Calculator Offers

Most SWP calculators show one number: the final corpus value. This calculator gives you the complete picture you need to actually plan retirement income.

Month-by-month accuracy. Interest is credited monthly and the withdrawal is deducted monthly, exactly how mutual fund SWPs work in practice. This removes the overestimation common in simpler yearly tools.

Inflation-adjusted withdrawals. Open Advanced Options and set a yearly inflation rate. Your monthly withdrawal then increases automatically each year, simulating rising living costs. This is also called a step-up SWP.

Corpus depletion warning. If your withdrawal is too aggressive for your corpus and return rate, the Key Takeaways section flags that the corpus runs out before your tenure ends, so you can adjust before committing real money.

Year-wise cash flow table. Every year shows the amount withdrawn, interest earned and closing balance. You can see at a glance whether your corpus is growing, holding steady or depleting.

Total profit calculation. The calculator shows how much your investment earned during the withdrawal period, over and above what you took out.

Flexible tenures up to 30 years. Quick-select 10, 15, 20, 25 or 30 years, or type a custom number. The 30-year option matters for anyone retiring at 55 or 60 who needs income until age 85 or 90.

Shareable plan link, image and CSV download. Generate a personalised link for a family member or advisor, share the summary as an image, or download the full year-wise projection as a CSV for Excel or Google Sheets.

Free and private. No account, no email, no data stored. Every calculation runs inside your own browser.

How the SWP Calculator Works: The Formula

The calculator applies this calculation every single month:

Closing Balance = Opening Balance x (1 + monthly return rate) minus Monthly Withdrawal

Where monthly return rate equals the annual return rate divided by 12. At 8 percent annual return, the monthly rate is 0.667 percent.

A worked example

Suppose you invest 50 lakh rupees and withdraw 30,000 rupees per month at 8 percent annual return.

Month 1 interest: 50,00,000 x 0.00667 = 33,333 rupees. Withdrawal: 30,000 rupees. Closing balance: 50,03,333 rupees.

Interest earned exceeds the withdrawal, so the corpus actually grows slightly. This is a sustainable SWP.

Now raise the withdrawal to 50,000 rupees per month on the same corpus. Interest is still 33,333 rupees, but you withdraw 50,000 rupees, so the corpus shrinks by 16,667 rupees in the first month alone. Compounded over 20 years, this plan depletes well before the end. Run both scenarios in the calculator above to see the difference in the year-wise table.

The sustainable withdrawal principle

If your monthly withdrawal is less than or equal to the monthly interest earned, your corpus never depletes and may even grow. If withdrawals consistently exceed interest, depletion is only a matter of time. The calculator shows you exactly which year that happens.

How to Use the SWP Calculator: Step by Step

Step 1: Enter your total investment

This is the lump sum you have invested or plan to invest. For example, 50 lakh rupees of retirement corpus.

Step 2: Enter the monthly withdrawal amount

The fixed amount you want credited every month. For example, 30,000 rupees for living expenses.

Step 3: Enter the expected return rate

Use realistic reference points. Debt and liquid funds have historically delivered around 6 to 7 percent. Hybrid and balanced advantage funds around 8 to 10 percent. Large cap equity funds around 10 to 12 percent over long periods. For retirement planning, a conservative 8 percent assumption builds in a safety margin.

Step 4: Select the time period

Pick 10, 15, 20, 25 or 30 years, or type your own. For retirement, count the years from retirement to your life expectancy. Most planners use 25 to 30 years as a safe horizon.

Step 5: Enable inflation adjustment

Open Advanced Options and enter an inflation rate. India’s long-term consumer price inflation, as tracked by the RBI, has averaged roughly 5 to 6 percent. Entering 6 percent grows your withdrawal 6 percent every year to preserve purchasing power.

Step 6: Click Calculate

You instantly get total withdrawn, final balance, total profit, a visual chart, Key Takeaways, and the full year-wise cash flow table. Download it as CSV or share the plan link if needed.

Safe Withdrawal Rate for SWP in India

The safe withdrawal rate is the percentage of your corpus you can withdraw each year without running out of money over a 25 to 30 year retirement.

The widely cited 4 percent rule comes from US research. It says withdrawing 4 percent of the corpus annually, adjusted upward for inflation each year, has historically sustained portfolios for 30 or more years. On a 1 crore corpus, that is 4 lakh per year, or roughly 33,333 rupees per month.

India is different. Our inflation has historically run higher than US inflation, so many Indian planners recommend a more conservative 3 to 3.5 percent starting withdrawal rate.

At a 3.5 percent safe withdrawal rate:

Use the calculator to stress-test any withdrawal rate against your corpus and time horizon.

How Much Corpus Do You Need for Your Target Monthly Income?

Reference figures assuming 8 percent annual return with 6 percent yearly inflation adjustment:

These are estimates. Actual requirements depend on the return you achieve and the inflation you experience. Model your exact numbers in the calculator above.

SWP with Inflation: Why It Changes Everything

Most SWP calculators online ignore inflation. This is one of the biggest planning mistakes Indian retirees make.

If you fix your withdrawal at 30,000 rupees today and never increase it, then at 6 percent inflation it will have the purchasing power of roughly 16,750 rupees in 10 years, and only about 9,350 rupees in 20 years. Your income looks stable on paper while your lifestyle quietly shrinks.

The solution is an inflation-adjusted SWP, also called a step-up SWP, where the withdrawal rises by a fixed percentage every year.

Comparison for a 50 lakh corpus at 8 percent return over 20 years:

The flat plan looks safer but fails you in real life. The inflation-adjusted plan protects your lifestyle but demands a larger corpus or a lower starting withdrawal. Turn on the inflation option in this calculator to see your honest scenario.

SWP vs FD for Monthly Income

This is the most common comparison for retirees and senior citizens.

Senior citizens should also compare against the Post Office Senior Citizen Savings Scheme, which offers government-backed quarterly income. Many planners suggest a hybrid: keep 1 to 2 years of expenses in an FD or liquid fund as a buffer, and run the SWP on the rest. The buffer prevents you from redeeming equity units at low NAVs during market crashes.

SWP vs SIP: Two Ends of the Same Journey

You build with SIP during your working years and distribute with SWP in retirement. They are two phases of one plan.

SWP vs the Dividend (IDCW) Option

Before SEBI renamed dividend plans to IDCW in 2021, many investors relied on mutual fund dividends for income. SWP is the better tool for regular income, and here is why.

With SWP, you decide the amount and the date. With IDCW, the fund house decides when and how much to distribute, and payouts can be skipped entirely. IDCW payouts are also added to your income and taxed at your slab rate, while SWP redemptions follow capital gains taxation, which is usually gentler for long-term equity holdings.

Is SWP Taxable? Current Rules

Yes. Every SWP instalment is a redemption, and the gain portion of each redemption is taxed as capital gains under Income Tax rules.

For equity mutual funds held over 12 months, long-term capital gains are taxed at 12.5 percent on gains above 1.25 lakh rupees per financial year. Gains on units held under 12 months attract short-term capital gains tax at 20 percent.

For debt mutual funds purchased after 1 April 2023, gains are added to your income and taxed at your slab rate regardless of holding period.

One important nuance works in your favour. In the early years of an SWP, a large part of each withdrawal is simply your own capital coming back, and only the gain portion is taxable. This often makes SWP meaningfully more tax-efficient than FD interest, where the entire payout is taxable. Estimate your slab impact with the Income Tax Calculator.

SWP Risks You Must Understand

Sequence of returns risk

The biggest hidden risk. If markets crash in the first few years of your SWP, you redeem more units at low NAVs to meet the fixed withdrawal. Those units are gone forever and cannot participate in the recovery. Mitigation: hold a 2-year expense buffer in a liquid fund and pause or reduce the SWP during deep downturns.

Over-withdrawal risk

Setting the withdrawal based on optimistic return assumptions is the fastest route to running out of money. Mitigation: stress-test your plan in this calculator at a return rate 2 to 3 percent below your expectation. If the corpus still survives, you have a genuine safety margin.

Inflation underestimation

Planning with zero inflation for a 20-year horizon means your real income halves along the way. Always model with 5 to 6 percent inflation enabled.

Fund selection risk

Running an SWP on a volatile small cap or mid cap fund magnifies sequence risk. Balanced advantage, hybrid or conservative hybrid funds are the standard choices for withdrawal portfolios.

Common Mistakes to Avoid with SWP

Starting the SWP immediately after moving the entire corpus to equity is risky; stagger the shift. Ignoring exit loads on withdrawals within the first year of investment quietly eats returns. Forgetting to report capital gains from each SWP instalment in your tax return creates compliance problems. And treating the calculator’s projections as guarantees rather than estimates leads to disappointment; returns are assumptions, not promises.

Expert Tips for a Sustainable SWP

Start with a withdrawal rate near 3.5 percent of corpus, then adjust yearly. Review the plan every 12 months against actual fund performance. Split the corpus across two or three funds to reduce single-fund risk. Time the SWP date a few days after your fund’s typical dividend or rebalancing dates. And if you have not yet built the corpus, work backwards: use the Retirement Calculator for the target and the SIP Calculator for the monthly investment needed to reach it.

Key Takeaways

An SWP converts a lump sum into a predictable monthly income while the balance stays invested. Sustainability depends on one comparison: monthly withdrawal versus monthly interest earned. India-appropriate safe withdrawal rates sit around 3 to 3.5 percent of the starting corpus. Inflation adjustment is not optional for plans beyond 10 years. This calculator models all of it month by month, with a year-wise table, depletion warnings, inflation step-up, CSV export and shareable plans, completely free and private.

Sources: SEBI regulations on mutual fund schemes and IDCW nomenclature, RBI consumer price inflation data, and Income Tax Department capital gains provisions

Frequently Asked Questions