How an SWP Works: Monthly Mutual Fund Withdrawals, Explained

By Dhruv Patil · Last updated: 14 October 2026

Short answer: A Systematic Withdrawal Plan (SWP) is a standing instruction to your mutual fund. On a fixed schedule, say every month, it sells a fixed amount of your units and sends the money to your bank account. Whatever you don’t take out stays invested and keeps moving up or down with the market. An SWP is not interest, and it’s not a guaranteed income. Each payout can include your own original money, so if the withdrawal is big enough, the account will run out one day.

Not investment advice. This guide is for education only. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Every number below is an illustration at an assumed rate of return, not a forecast or a promise.

Why a student should understand SWP at all

Most of us hear about the SIP first: you put in a fixed amount every month. An SWP is the same idea in reverse. You take out a fixed amount every month.

You probably won’t need an SWP this year. It’s still worth knowing, for three reasons:

1. You’ll see it everywhere. Finfluencers love “₹X a month for life” SWP reels. Once you know how it really works, bad maths won’t fool you.
2. Family money chats. Parents and grandparents close to retirement often ask about SWP vs FD. You can be the one at home who explains it calmly.
3. Your own future. Once you’ve built up savings through SIPs, an SWP is one way to draw them down in a planned way.

Our free SWP calculator does the maths. This guide explains what’s going on inside it, so you can read the results properly.

What an SWP is, in AMFI’s words

AMFI (the Association of Mutual Funds in India) has an investor education booklet. It describes an SWP as a way to withdraw a fixed amount at regular intervals, such as monthly or quarterly, from a mutual fund investment. In AMFI’s words, it’s “simply a structured way to redeem”. So instead of pulling everything out at once, you set up small, automatic withdrawals.

Three words in that description matter:

• Redeem. An SWP payout is a sale of units. It’s exactly what happens when you withdraw from a fund yourself. The SWP just does it automatically.
• Fixed amount. You choose the rupee amount, say ₹2,000 a month. The number of units sold changes every time, depending on that day’s NAV.
• Remaining corpus. The units you don’t sell stay invested. AMFI’s booklet notes that the corpus “may increase or decrease depending on investment performance and withdrawals.”

AMFI also points out that units are sold at the applicable NAV when you redeem. And an exit load or tax may apply depending on the scheme, especially if you redeem before a set period.

Why this matters to you: an SWP payout is your own units being sold. It isn’t a salary from the fund.

How one SWP payout actually happens

Here’s what happens for one monthly withdrawal:

1. You register an SWP with the fund house, either directly or through the platform you invest with. You choose the scheme, the amount, how often, the date, and a start and end date. Options and minimums differ by scheme, so check the scheme information document.
2. On the SWP date, the fund works out how many units it needs to sell to raise your amount at that day’s NAV.
3. Those units are sold and the money goes to your registered bank account.
4. Your remaining units stay invested until the next payout.

Units example (illustrative NAVs)

Say your SWP is ₹2,000 a month.

*Illustrative NAVs, not real fund prices.

Look at month 2. When the NAV falls, you have to sell more units to get the same ₹2,000. Those units are gone for good, so they can’t recover when the market bounces back.

Why this matters to you: this is the opposite of what makes SIPs feel comfortable. In a SIP, a falling NAV buys you more units. In an SWP, it costs you more units.

The maths behind our SWP calculator

The TeenBucks SWP calculator uses a simple month-by-month model:

Closing balance = Opening balance × (1 + i) − Withdrawal

• i = assumed yearly return ÷ 1,200 (a monthly rate)
• Growth is added first, then the month-end withdrawal is taken out.
• If the balance is smaller than the withdrawal, the model pays out only what’s left.

There’s also a “target mode”. It works out how much money you’d need to fund a withdrawal for a fixed period, ending at zero. For that it uses the standard annuity formula:

Corpus = W × [1 − (1 + i)^(−n)] ÷ i

Here W is the monthly withdrawal and n is the number of months. At a 0% return, the amount you’d need is simply W × n.

Real funds don’t grow at one steady rate. Think of the model as a planning sketch that shows how the pieces fit together, not as a payout schedule.

Worked examples (illustrative, assumed rates)

All the figures below come from the month-by-month formula above. They’re before tax and exit loads, at assumed steady rates. Real results will be different, and they can be worse.

Example 1: a ₹1 lakh corpus, ₹2,000 a month

At an assumed 0% return

• How long ₹2,000 a month lasts: 50 months (4 years 2 months)
• Total withdrawn: ₹1,00,000

At an assumed 6% return

• How long ₹2,000 a month lasts: 58 months (the last payout is partial)
• Total withdrawn: about ₹1,15,361

At an assumed 6%, you take out more in total than you put in. But the account still runs dry in under five years. Taking out 24% of the starting amount every year is more than this assumed growth can keep up with.

Example 2: same ₹1 lakh, ₹1,000 a month for 10 years

At an assumed 6%, ten years of ₹1,000 withdrawals (₹1,20,000 in total) would leave an estimated balance of about ₹18,060. Halve the withdrawal and the money lasts much longer.

Why this matters to you: the size of the withdrawal matters more than any other number you type in.

Example 3: the calculator’s own ₹5 lakh case

On the calculator page: ₹5,00,000 to start, ₹5,000 at each month-end, an assumed 6% for ten years. That gives ₹6,00,000 withdrawn and an estimated ₹90,302 left. At a 0% return, the same amount funds exactly 100 withdrawals (8 years 4 months).

Example 4: target mode

How much would you need to fund ₹2,000 a month for 2 years, ending at zero? At an assumed 6%, about ₹45,126. At 0%, exactly ₹48,000. In target mode the money is meant to run down to zero. It isn’t trying to keep your capital safe.

Try your own numbers on the SWP calculator. Then try a lower return and watch how fast the result changes.

The three risks the calculator can’t show you

1. Sequence-of-returns risk

The calculator assumes the same return every month. Real markets can fall hard early on. If you’re withdrawing during a fall, you sell more units at low prices (see the units table above). The money may never fully recover. Two portfolios with the same average return can end up very differently, depending on when the bad years come.

2. Inflation

₹2,000 a month buys a little less every year. A fixed SWP amount that feels fine today may not cover the same costs in five or ten years.

3. Fund risk

Different types of schemes carry very different levels of risk. Each scheme’s riskometer and scheme documents tell you what it invests in. No type of fund makes an SWP “safe” or guarantees it will last.

No “safe withdrawal rate” is guaranteed. You’ll see claims online that taking out some fixed percentage a year lasts forever. No official source promises that, and neither does our calculator.

SWP vs SIP vs a fixed deposit

Here’s the quick comparison, one point at a time.

Want to go deeper? Read our SWP vs FD for monthly income post. Curious about a specific target? See our SWP for ₹15,000 a month breakdown. And if you’re still in the saving-up stage, our SIP calculator shows the other side of the story.

Tax, exit loads and paperwork

Tax: each SWP payout is a redemption, so capital-gains tax can apply to the gain part of what you redeem. How it’s taxed depends on the type of fund, how long you held the units, and the law at the time. Check the current rules on the Income Tax Department’s website or ask a qualified tax professional.

Exit loads: some schemes charge an exit load if you redeem units within a set period after buying them. It’s different for each scheme, so read the scheme information document before you pick an SWP start date.

Signing up and cancelling: how much notice you need to give, which dates you can pick, and the minimum amounts all depend on the fund house. Check with your fund house or platform.

Common mistakes to avoid

• Treating SWP payouts as “returns”. Part of each payout can just be your own money coming back to you.
• Setting the withdrawal too high. Example 1 shows a 24%-a-year withdrawal running out within five years, even at an assumed 6%.
• Ignoring a bad first year. Run the calculator at a low or zero return as a stress test.
• Starting an SWP with money you’ll need for fees soon. If your college fee is due in three months, a savings account is simpler and steadier.
• Falling for “guaranteed monthly income” pitches on social media. SEBI has warned investors about unregistered advice on social media. See our post on SEBI’s warning about social-media tips.

FAQ

What is an SWP in a mutual fund?

An SWP (Systematic Withdrawal Plan) lets you take out a fixed amount from a mutual fund at regular intervals, such as monthly or quarterly. Each payout is a sale of units. The units you don’t sell stay invested and can go up or down in value.

Is SWP income guaranteed?

No. SWP payouts come from selling your units. If returns are low or negative, or the withdrawal is large, the money can shrink and eventually run out. Any calculator result is an estimate at an assumed rate.

How long will ₹1 lakh last with a ₹2,000 monthly SWP?

In our example, it lasts 50 months at an assumed 0% return, and about 58 months at an assumed steady 6%. Real returns go up and down, so treat these as examples, not forecasts.

Is SWP better than an FD?

Neither is better for everyone. An FD pays interest at the rate written in its terms. An SWP sells market-linked units, and a payout can include your own capital. Compare the risk, how certain you need the money to be, the charges and the tax.

Is tax charged on SWP withdrawals?

Each SWP payout is a redemption, so capital-gains tax can apply to the gain part. How it’s taxed depends on the fund type, how long you held the units and the law at the time. Check the Income Tax Department’s website or ask a tax professional.

Does the SWP calculator include exit load and tax?

No. The TeenBucks SWP calculator shows results before tax and exit loads, using one steady assumed return. Check the scheme information document for exit loads.

Sources (checked 14 Oct 2026)

• AMFI, Understanding Mutual Funds investor education booklet (“What is Redemption and SWP?”): https://www.amfiindia.com/uploads/AMFI_Understanding_Mutual_Funds_IAP_Booklet_Final_Website_version_860a5b77aa.pdf (checked 14 Oct 2026)
• AMFI Investor Corner: https://www.amfiindia.com/investor (checked 14 Oct 2026)
• SEBI Investor website, mutual fund education and risk: https://investor.sebi.gov.in/ (checked 14 Oct 2026)
• SEBI Investor, Understanding the Riskometer: https://investor.sebi.gov.in/riskometer.html (checked 14 Oct 2026)
• Income Tax Department (for current capital-gains rules): https://www.incometaxindia.gov.in/ (checked 14 Oct 2026)
• TeenBucks SWP calculator methodology (forward model and target-mode formula): https://teenbucks.in/swp-calculator/ (checked 14 Oct 2026)

Disclaimer

TeenBucks is an educational site, not a SEBI-registered investment adviser. Nothing here is a recommendation to buy, sell or withdraw from any scheme. All figures are illustrations at assumed rates, before tax and exit loads, and are not guaranteed. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. For advice on your own situation, talk to a SEBI-registered adviser or a qualified tax professional. See our editorial policy and disclaimer.

Last updated: 14 October 2026