SWP Calculator: Plan Your Monthly Mutual Fund Income

By Wealthova | Last Updated: July 23, 2026

You have spent decades diligently investing, running SIPs, and building a massive retirement corpus. But accumulating wealth is only half the battle. The ultimate financial challenge is figuring out how to safely consume that wealth without the fear of outliving your money.

Traditionally, Indian retirees parked their life savings in Bank Fixed Deposits to earn monthly interest. Today, that strategy is dangerously flawed due to high inflation and brutal tax slabs. The modern, mathematically superior solution is a Systematic Withdrawal Plan (SWP). An SWP allows you to generate a fixed, reliable monthly “salary” from your mutual funds, while the rest of your money stays invested and continues to compound.

But how much can you safely withdraw? Will your money last 10 years, or 30 years? Use our free, interactive SWP Calculator below to stress-test your retirement. Simply input your total corpus, desired monthly payout, and expected return rate to instantly project your final balance and corpus longevity.

If a Systematic Investment Plan (SIP) is how you build the staircase of wealth, a Systematic Withdrawal Plan (SWP) is how you safely walk back down it.

When you set up an SWP, you instruct your Mutual Fund AMC (Asset Management Company) to sell a specific, fixed rupee amount of your mutual fund units on a specific date every single month, and transfer that cash directly into your bank account.

Here is the mechanical reality: If you request ₹50,000 a month, the AMC will look at the fund’s Net Asset Value (NAV) on that day.

• If the market is high and the NAV is ₹100, the AMC sells 500 units to give you ₹50,000.
• If the market crashes and the NAV drops to ₹50, the AMC sells 1,000 units to give you that same ₹50,000.

Because you are selling units every month regardless of market conditions, you are executing Rupee Cost Averaging in reverse. This makes an SWP incredibly reliable, but it also means you must ensure your withdrawal rate is mathematically sustainable so you don’t liquidate too many units during a deep market crash.

If you are transitioning from the “accumulation phase” (building wealth) to the “distribution phase” (spending wealth), avoid these critical errors:

1. Starting an SWP in a Bear Market: If you retire the exact month the Nifty 50 crashes by 20%, delay starting your SWP if possible. Live off your cash reserves or Bank FDs for a year. Withdrawing from an equity portfolio while it is bleeding is the fastest way to deplete your corpus.
2. Withdrawing More Than 6%: It is mathematically tempting to enter a 10% withdrawal rate into our calculator. However, real-world markets do not go up in straight lines; they have negative years. Financial planners strictly recommend keeping your withdrawal rate between 4% and 6% of your total starting corpus.
3. Ignoring Asset Allocation: As you age, your portfolio should slowly transition from aggressive equity to stable debt. If you are 75 years old and still have 90% of your money in pure equity funds while running an SWP, you are taking on a dangerous amount of risk. Review and rebalance your portfolio annually.

One of the biggest mistakes retirees make is setting up a fixed SWP and forgetting about it. If you set your SWP to withdraw ₹50,000 per month today, that amount might perfectly cover your groceries, utilities, and lifestyle.

However, because of inflation, the purchasing power of that ₹50,000 will be cut in half in about 10 to 12 years. By the time you are 15 years into your retirement, ₹50,000 will barely cover your basic survival needs.

The Solution: The “Step-Up” SWP To survive a 30-year retirement, you must periodically increase your withdrawal amount. Smart investors review their SWP every 3 to 5 years and manually step up their monthly withdrawal by 5% to 6% to match inflation.

(Note: This is exactly why you must ensure your underlying mutual fund is growing at 10% to 12%—it needs to outpace both your withdrawals and inflation!)

We have engineered our interface to be completely intuitive. Follow these steps to map out your passive income strategy:

• Step 1: Set Your Total Investment (Corpus): Enter the total value of your accumulated mutual fund portfolio. This is the starting capital that will generate your monthly income.
• Step 2: Determine Your Monthly Withdrawal: Input the exact rupee amount you need transferred to your bank account every month to cover your living expenses.
• Step 3: Set a Realistic Expected Return Rate: This is the average annualized growth you expect your remaining corpus to generate. Wealthova Tip: Since retirement portfolios should be conservative, we recommend modeling this between 8% to 10% (for balanced/hybrid funds) rather than aggressive equity rates.
• Step 4: Select Your Time Period: Slide the timeline to match your expected retirement duration (e.g., 20 or 30 years). The engine will instantly reveal exactly how much wealth you will have left over at the end of that period to pass on to your heirs.

Planning your retirement withdrawals using mental math is a recipe for disaster. If you withdraw even 1% too much per year, you risk entirely depleting your life savings a decade early. Here is why our dedicated engine is the smartest way to plan your passive income:

• Real-Time Longevity Testing: The most terrifying question in retirement is, “When will the money run out?” Our engine mathematically compounds your remaining balance while simultaneously deducting your monthly withdrawals. If your withdrawal rate is unsustainable, the calculator instantly flashes a red “Corpus Depleted” alert, allowing you to safely adjust your expectations before making real-world mistakes.
• Visual Corpus Tracking: It can be psychologically difficult to watch your portfolio fluctuate in retirement. Our dynamic doughnut chart visually tracks the exact ratio of your Final Remaining Balance against your Total Withdrawn amount, giving you the confidence to trust the math even when markets are volatile.
• Stress-Testing Market Scenarios: Because you can instantly slide the “Expected Return Rate” scale, you can stress-test your retirement against worst-case scenarios. See exactly how long your money lasts if the market only returns 7% instead of your expected 12%.

Before automating your retirement withdrawals, you must understand both the immense power and the strict mathematical risks involved:

When planning for passive income, Indian investors generally choose between three instruments. Here is exactly why the SWP has become the modern gold standard for wealth preservation: