SWP Calculator

What is a SWP (Systematic Withdrawal Plan)?

A Systematic Withdrawal Plan, or SWP, is the mirror image of a SIP. Instead of investing a fixed amount every month into a mutual fund, you redeem a fixed amount every month from a mutual fund corpus you already own. SWP is the standard way to convert a lump-sum corpus — built up through years of SIPs, provident fund withdrawals, or property sales — into a predictable monthly income stream.

SWP is most commonly used in retirement. You accumulate a corpus during your working years through SIPs and EPF/PPF contributions, then switch to SWP mode at retirement to draw a monthly "pension" while keeping the balance invested and growing. The same mechanism works for any goal that requires regular withdrawals — a sabbatical, a child's college years, or bridging the gap between two jobs. Our SWP calculator shows you exactly how long a given corpus, withdrawal amount, and return assumption will last.

At SIPlyy, our SWP calculator runs entirely in your browser. The month-by-month simulation is computed locally on your device — your corpus and withdrawal details never travel to a server. There is no sign-up, no usage cap, and no data collection.

How SWP is the opposite of SIP — accumulation vs distribution

A SIP and a SWP are two halves of an investor's life. The SIP phase (also called the accumulation phase) is when you build the corpus: you put money in every month, the markets compound it, and the corpus grows. The SWP phase (also called the distribution phase) is when you spend the corpus: you take money out every month, the markets still compound whatever remains, and the corpus either holds steady, grows, or shrinks depending on the math.

The math, however, is not symmetric. During accumulation, time is your friend — every additional year of compounding multiplies your corpus. During distribution, time can be your enemy — every additional year of withdrawals is a chance for a market downturn to force you to sell more units at lower prices. This is called sequence-of-returns risk, and it is the single biggest threat to a retirement SWP. Two retirees with identical average returns can end up with wildly different outcomes depending on whether the bad years came early or late.

This asymmetry is why the SWP calculator matters. A corpus that looks "obviously enough" — say ₹1 crore with a ₹50,000 monthly withdrawal at 10% expected return — can still run out if the first three years of retirement happen to be bear markets. The calculator's constant-return assumption is a useful planning baseline, but real-world results will vary. Always model a 2–3 percentage point lower return than your "expected" figure to stress-test your plan.

The math: how SWP calculations work

The SWP calculator simulates your corpus month by month for 240 months (20 years). For each month, it applies this formula:

newCorpus = (oldCorpus − withdrawal) × (1 + monthlyRate)

Where oldCorpus is the corpus at the start of the month, withdrawal is the fixed monthly amount you redeem, and monthlyRate is the annual expected return ÷ 12. The withdrawal is subtracted first (because it typically happens at the start of the month), and the remaining corpus then compounds for the month. If at any point the corpus drops below the withdrawal amount, the corpus is considered exhausted.

The break-even corpus — the minimum corpus needed to sustain a given withdrawal forever — is when the monthly growth equals the withdrawal. Mathematically: break-even corpus = withdrawal ÷ monthlyRate. For a ₹30,000 monthly withdrawal at 10% annual return (monthly rate ≈ 0.833%), the break-even corpus is ₹30,000 ÷ 0.00833 ≈ ₹36 lakh. If your corpus is above ₹36 lakh, it should grow over time; if it is below ₹36 lakh, it will eventually exhaust.

Note that this break-even is a simplification. It assumes constant returns, no taxes, no inflation, and no fees. In practice, taxes on each redemption (see below) and inflation on the withdrawal amount both work against you, so a safer break-even is roughly 1.5× to 2× the theoretical figure. A common rule of thumb — the 4% rule — suggests you need a corpus of 25× your annual expenses (₹50,000 monthly = ₹6 lakh annual = ₹1.5 crore corpus). Read more on this below.

A worked example: ₹50 lakh corpus at 10% return

Let's plug in the calculator defaults. You start with a ₹50 lakh corpus, withdraw ₹30,000 per month, and assume a 10% annual return. The monthly growth on ₹50 lakh at 10% is roughly ₹41,666 — more than the ₹30,000 you are withdrawing. So the corpus grows every month, not shrinks.

After 20 years of ₹30,000 monthly withdrawals, you will have withdrawn a total of ₹72 lakh (₹30,000 × 240 months). But the corpus, far from being depleted, will have grown to roughly ₹1.37 crore — almost three times your starting capital. This is the magic of a corpus that comfortably exceeds the break-even threshold: the growth outpaces the withdrawals, and the corpus compounds while you are spending from it.

Now change just one variable: double the monthly withdrawal to ₹50,000. The corpus is no longer self-sustaining — ₹50,000 withdrawal against ₹41,666 monthly growth means the corpus declines by roughly ₹8,333 per month at the start, and the decline accelerates as the corpus shrinks. Run the simulation and you will see the corpus exhaust at around month 210 — roughly 17 to 18 years. Increase the withdrawal further to ₹60,000, and the corpus exhausts in roughly 12 years. The lesson: small changes in withdrawal rate produce dramatic changes in corpus life. This is exactly why retirement planners obsess over the 4% rule.

Try this in the calculator yourself. Slide the monthly withdrawal up and watch how quickly the "Corpus status" line flips from "Lasts 20 years" to "Exhausts at month X". The relationship between withdrawal rate and corpus survival is the most important number in retirement planning, and this tool lets you see it in real time.

SWP for retirement income — the 4% rule and its Indian adaptation

The 4% rule, popularised by US financial planner William Bengen in 1994, says a retiree can safely withdraw 4% of their initial corpus per year (adjusted for inflation) for 30+ years without running out of money. For a ₹1 crore corpus, that means ₹4 lakh per year, or about ₹33,333 per month. Bengen's research showed that even in the worst historical 30-year windows (including the Great Depression and 1970s stagflation), a 50–75% equity portfolio with 4% withdrawals survived.

The 4% rule needs adaptation for India. Three factors argue for a more conservative withdrawal rate. First, Indian inflation runs at 5–6% versus the US's 2–3%, so the inflation adjustments on withdrawals are larger. Second, Indian equity volatility is higher — the Nifty 50 has had several 50%+ drawdowns (2008, 2020, 2022). Third, Indian retirees often want to leave a bequest, not just maximise spending. A 3–3.5% withdrawal rate (₹25,000–₹29,000 per month per ₹1 crore) is a more realistic Indian safe withdrawal rate.

In practice, most Indian retirees blend SWP with other income sources. The typical structure is: EPF/PPF interest for the essential floor, an annuity for guaranteed income, SWP from a balanced or equity-debt mutual fund portfolio for discretionary expenses, and a liquid fund with 2–3 years of expenses as a sequence-of-returns buffer. This blended approach lets you reduce the SWP withdrawal rate in bad market years without cutting your overall income. Read our SIP for retirement planning guide for the full framework.

If you are still in the accumulation phase, your goal is to build a corpus large enough that your desired monthly withdrawal is at most 3.5–4% of it. Use our SIP Goal Calculator to work backwards from your target retirement corpus, and our SIP Inflation Calculator to make sure your target is inflation-adjusted. The SIP calculator and Lump Sum calculator show the forward direction — how much a given monthly SIP or one-time investment can grow to.

Tax implications of SWP

Every SWP redemption is a taxable event. Each month, when your mutual fund sells units worth ₹30,000 (or whatever your withdrawal is), a portion of that ₹30,000 is your original capital (not taxed) and a portion is capital gains (taxed). The split depends on which units are being redeemed — and Indian mutual funds follow the First-In-First-Out (FIFO) method, meaning the oldest units in your folio are sold first.

For equity mutual funds (where at least 65% of the portfolio is domestic equity), units held for more than 12 months qualify for Long-Term Capital Gains (LTCG) treatment. LTCG on equity is taxed at 12.5% on gains above ₹1.25 lakh per financial year (post-July 2024 Budget). Units held for less than 12 months are Short-Term Capital Gains (STCG), taxed at a flat 20% (also post-July 2024 Budget). For a long-running SWP from an equity fund, almost all redemptions will be LTCG, and only the gains portion (typically 30–60% of each withdrawal) is taxed — so the effective tax rate on a ₹30,000 withdrawal might be just 2–4%.

For debt mutual funds, the rules changed in April 2023. All gains — regardless of holding period — are now added to your income and taxed at your slab rate. There is no LTCG benefit for debt funds bought after 1 April 2023. This makes SWP from pure debt funds less tax-efficient than SWP from equity or hybrid funds, especially for investors in the 30% tax bracket. Many retirees therefore use hybrid funds (balanced advantage or aggressive hybrid) for their SWP corpus — these maintain equity taxation (65%+ equity) while reducing volatility through the debt component.

The SWP calculator on this page does not deduct taxes from the corpus. The "final corpus" and "total withdrawn" figures are pre-tax. To estimate your post-tax position, knock off roughly 1–2 percentage points from the expected return for equity SWPs and 2–4 percentage points for debt SWPs, depending on your tax slab. For a fuller treatment of how SIP and SWP taxation works in India — including the LTCG exemption, FIFO accounting, and the April 2023 debt fund changes — read our detailed guide to mutual fund taxation. And to understand how to measure the actual return you earned through a mix of SIP and SWP, see our primer on XIRR in SIP.

Frequently asked questions about the SWP Calculator

Mutual fund investments are subject to market risks. Please consult a SEBI-registered investment adviser before investing.