SWP Calculator

A Systematic Withdrawal Plan (SWP) is the mirror image of a SIP. Where a SIP puts in a fixed amount every month, an SWP takes out a fixed amount every month from a lump sum you have already invested in a mutual fund. The fund redeems just enough units each period to pay you, and everything you have not yet withdrawn stays invested and keeps earning returns. It is the most common way to turn a retirement corpus, a maturing FD or a windfall into a predictable monthly income.

The appeal is control and tax efficiency: you choose the amount and the date, and you are only taxed on the gain inside each withdrawal rather than the whole sum. The risk is that withdrawing too aggressively — or hitting a bad market early — can drain the corpus faster than a constant-return projection suggests.

Each month the calculator follows a simple recurrence. Under the default start-of-month convention you withdraw first and the remaining balance then grows:

balance_k = (balance_k−1 − W) × (1 + i)

which has the closed form

FV = P × (1 + i)ⁿ − W × [((1 + i)ⁿ − 1) ÷ i] × (1 + i)

• P — the opening lump-sum corpus.
• W — the fixed amount you withdraw each month.
• i — the monthly return = annual rate ÷ 12 ÷ 100 (e.g. 8% → 0.006667 per month).
• n — the number of monthly withdrawals = withdrawal years × 12.
• FV — the remaining corpus after the run.

In plain terms: your whole lump sum keeps compounding, and from it we subtract the compounded value of every withdrawal you take. When the expected return is 0%, the annuity factor would divide by zero, so the engine switches to the straight-line case FV = P − W × n — no division-by-zero, no NaN.

With P = ₹5,00,000, W = ₹5,000, i = 8% ÷ 12 and n = 120, the corpus leaves a remaining value of ₹1,88,991.74 after you have drawn ₹6,00,000.00 in total. The year-by-year table below is generated by the same engine that powers the calculator above, so it can never drift from the math. Watch how the closing balance barely dips at first — the 8% growth almost keeps pace with the withdrawals — before the gap slowly widens:

The single most important question in any SWP is whether the corpus outlives the plan. The pivot is the monthly growth, P × i:

• If W < P × i, you withdraw less than the corpus earns — the balance actually grows.
• If W = P × i, the corpus stays roughly level indefinitely.
• If W > P × i, you are eating into principal and the corpus will eventually hit zero.

The table below shows the same ₹5,00,000 corpus at 8% over 10 years under different monthly withdrawals. Notice the point where a bigger draw flips the plan from “lasts the full term” to a hard depletion month:

When a plan depletes, the calculator reports the exact month the money runs out and caps the total withdrawn there — it never shows a meaningless negative balance.

A widely-quoted rule borrowed from retirement planning is the 4% rule — withdrawing about 4% of the starting corpus per year, roughly 0.33% a month. At that pace a corpus earning a moderate return tends to last for decades. The genuinely sustainable rate, though, depends on your expected return: as a guide, keep your annual withdrawal at or below your expected annual return so you draw mostly from gains rather than principal. Because real markets are not steady, leaving a margin below that line is what protects you against a poor early run.

Every SWP withdrawal is a partial redemption of units, so it is taxed as a capital gain — and crucially, only on the gain portion of what you receive, not the whole amount. For equity-oriented funds:

• Units held more than 12 months → long-term capital gains (LTCG), taxed at 12.5% on gains above the ₹1.25 lakh annual exemption (FY 2025-26).
• Units held 12 months or less → short-term capital gains (STCG), taxed at 20%.
• Debt-fund gains are taxed at your income-tax slab rate, regardless of holding period.

The fund applies FIFO — first-in, first-out — so your earliest, often most-appreciated units are sold first. Because only the gain is taxed (and equity LTCG enjoys an exemption), an SWP is usually far more tax-efficient than the same income taken as a dividend. This calculator shows gross figures, so your net in-hand cash is lower after tax.

Many investors weigh an SWP against the dividend (now called IDCW — Income Distribution cum Capital Withdrawal) option of a fund. They are very different in control and tax treatment:

With an SWP you decide the amount and the date and pay tax only on the embedded gain; an IDCW is declared at the fund\'s discretion, is irregular, and is taxed in full at your slab rate plus TDS. For someone who needs a steady, tax-efficient income, the SWP is usually the better tool.

An SWP is not the only way to generate regular retirement income. Two common alternatives are the Senior Citizens Savings Scheme (SCSS), a government-backed savings account that pays 8.2% p.a. (as of Q1 FY 2025-26) in quarterly instalments, and bank fixed deposits, which pay a fixed rate for a chosen tenure. The three products serve different parts of a retiree\'s risk appetite:

A practical approach many retirees use is a bucket strategy: park 1–2 years of expenses in SCSS or short-term FDs for certainty, and run an SWP from an equity-light fund for the remainder so the corpus has a chance to grow above inflation over the longer horizon. This way market volatility in the SWP bucket does not force you to sell units at bad prices for daily expenses.

Any open-ended mutual fund can run an SWP, but the category choice matters enormously for sustainability. The guiding principle is simple: the fund should be able to grow faster than your withdrawal rate while absorbing manageable volatility.

• Conservative hybrid funds / balanced advantage funds — the most common SWP choice for retirees. A 25–40% equity allocation keeps returns above inflation while the debt portion cushions market falls. Balanced advantage funds dynamically shift between equity and debt, reducing equity exposure when valuations are high — a useful buffer against sequence-of-returns risk.
• Large-cap or flexicap equity funds — suitable for a longer horizon (10+ years) where the corpus has time to recover from downturns. The higher expected return makes a higher withdrawal sustainable in the long run, but early-year drawdowns can permanently impair the corpus if the withdrawal rate is too aggressive.
• Short-duration or money market debt funds — for an investor who wants near-certainty on the corpus value. Returns are lower (broadly in line with prevailing short-term rates), so the sustainable withdrawal rate is lower too, but there is almost no volatility in the corpus.

Whichever category you pick, check the scheme\'s expense ratio — it directly reduces your net return. A 1% difference in expense ratio is roughly a 1% difference in the effective return your SWP earns, which can shorten or lengthen the corpus life by years.

Yes — and this surprises many first-time SWP users. If your monthly withdrawal is smaller than the return the corpus earns that month (W < P × i), the leftover growth is reinvested and your balance climbs over time even though you are taking money out every month. A ₹10 lakh corpus at 12% earns roughly ₹10,000 a month, so a ₹3,000 monthly SWP leaves it comfortably growing. The balance line in the chart above tells you instantly whether your plan trends up or down.

Two legitimate conventions exist. The start-of-month (annuity due) method withdraws first and grows the remainder; the end-of-month (ordinary annuity) method grows first and then withdraws, leaving a marginally larger corpus because the money is exposed to one less withdrawal each period. We pin start-of-month as the default because that is the convention the live Groww and ClearTax calculators use — it is the only one that reproduces their published worked examples to the rupee. The timing toggle lets you switch to the textbook end-of-month variant:

This calculator assumes a single, constant return every month. Real markets are lumpy, and that matters more for withdrawals than for accumulation. If a downturn strikes early in your withdrawal phase, you are forced to sell more units at depressed prices to fund the same fixed withdrawal — permanently shrinking the corpus that then has to recover. This is sequence-of-returns risk, and it is why a real SWP can run out years sooner than a steady-rate projection promises, even when the long-run average return is exactly as assumed. The practical defence is to keep your withdrawal comfortably below the sustainable limit and hold a buffer of low-volatility assets to draw from during bad years.

The headline corpus is a gross nominal estimate. Your real outcome is affected by:

• Capital-gains tax on every withdrawal (LTCG/STCG for equity, slab rate for debt).
• Fund costs — the expense ratio shaves the effective return; exit loads hit early redemptions.
• TDS may apply to certain investors on redemptions.
• Inflation — a fixed nominal ₹W loses purchasing power over a long retirement, so the remaining corpus is nominal, not real.

Use the calculator to compare scenarios; consult a tax adviser for your exact post-tax, post-cost, inflation-adjusted figure.

The figures here use the standard SWP identity — the future value of the lump sum minus the future value of the withdrawal annuity — with the simple monthly rate i = r/12/100 and the start-of-month convention used by Groww and ClearTax, matching their worked examples to the rupee (for instance, ₹1,20,000 with ₹10,000/month at 7% for one year leaves about ₹4,026). Treat the result as a faithful illustration of how a steady-rate SWP behaves — not as a guaranteed return or as financial advice.