SWP Calculator
Calculate how long your mutual fund corpus will last with regular monthly withdrawals (Systematic Withdrawal Plan).
About the SWP Calculator
A Systematic Withdrawal Plan (SWP) is the retirement income tool most financial planners recommend but that very few Indian investors use in practice. The concept is simple: you invest a lump sum in a mutual fund and instruct the fund house to redeem a fixed amount every month. Unlike breaking an FD every year or waiting for dividend payouts, SWP gives you a predictable monthly income stream while the remaining corpus stays invested and compounding. If your corpus earns more than you withdraw, it actually grows over time - the most powerful property of a well-designed SWP.
The critical number in any SWP is the sustainable withdrawal rate - the monthly amount at which your corpus neither grows nor shrinks. This equals your corpus multiplied by the annual return, divided by 12. For a ₹1 crore corpus earning 10%, that's ₹83,333/month. Withdraw less and the corpus grows; withdraw more and it depletes. The calculator shows you this number alongside your chosen withdrawal so you immediately know whether your plan is sustainable.
Tax efficiency is where SWP outperforms every alternative. FD interest is taxed at your slab rate (up to 30%). SWP redemptions from equity-oriented funds held over 12 months are taxed as LTCG at 12.5% - and only on the gains portion, not the principal returned. On a ₹30,000 monthly SWP from a fund with a 50% gain component, only ₹15,000 is even considered for tax, and only at 12.5% - a tax of ₹1,875 versus ₹9,000 at 30% slab. Compounded over 20 years, this post-tax efficiency difference is substantial.
SWP Balance and Sustainability Formula
Balance(month+1) = Balance x (1 + r) - Withdrawal | Sustainable monthly = Corpus x Annual return% / 12 / 100
r = Monthly return (annual rate / 12 / 100) | Sustainable: withdrawal = monthly returns earned | Depleting: withdrawal > monthly returns | 4% rule: withdraw 4% of corpus annually for ~30-year retirement safety
Worked Example
₹1 crore corpus, ₹40,000/month withdrawal, 10% annual return, 25 years
Withdrawal ₹40,000 < sustainable ₹83,333 - corpus grows | Corpus after 25 years: approx ₹8.7 crore | Total withdrawn: ₹1.2 crore
Tips & Insights
- 1
Calculate your sustainable withdrawal first: corpus x annual return% / 12. Keep your SWP below this to ensure the corpus never depletes.
- 2
Increase SWP amount by 5-6% annually to maintain purchasing power - a fixed ₹40,000/month in 2025 is worth only ₹22,000 in today's money by 2035 at 6% inflation.
- 3
During market downturns, pause SWP for 3-6 months and draw from liquid funds or FDs instead - selling equity at lows permanently impairs corpus through sequence-of-returns risk.
- 4
Balanced advantage funds and hybrid aggressive funds are ideal for SWP - they rebalance automatically between equity and debt, smoothing volatility without you having to time anything.
- 5
SWP from equity funds (held 12+ months) is taxed at LTCG 12.5% only on the gains portion - far more efficient than FD interest taxed at 30% slab rate.
- 6
Start SWP from debt or hybrid funds in the first 1-2 years of retirement while equity positions mature past 12 months to qualify for LTCG treatment.
- 7
Set up SWP on the 5th or 10th of each month rather than the 1st - avoids NAV distortions from month-end redemption congestion at some fund houses.
- 8
The 4% rule (withdraw 4% annually) from US research translates to roughly 3-3.5% for Indian investors due to our higher inflation rate - adjust down if you need the corpus to last 30+ years.
Why this matters for you
India has no universal pension system. EPF provides a pension capped at ₹7,500/month (based on EPS), and NPS provides a partial annuity. For most salaried Indians, the bulk of retirement income must come from self-built corpus. SWP from a mutual fund is the most flexible, tax-efficient, and inflation-adaptable way to generate that income - far superior to the FD break-and-reinvest cycle most retirees rely on.
The math of SWP is genuinely forgiving when done correctly. A ₹1 crore corpus earning 10% while you withdraw ₹5 lakh annually (5%) grows to over ₹4 crore in 20 years. You receive ₹1 crore in total withdrawals AND end up with ₹4 crore - better than any FD ladder could achieve. The key is choosing a sustainable withdrawal rate and a fund that can reliably deliver 9-11% over long periods.
Sequence-of-returns risk is the biggest threat to SWP plans - a bad market in years 1-3 of retirement can permanently derail a corpus even if long-term returns are fine. The mitigation is a bucket strategy: 1-2 years of expenses in liquid funds, 3-5 years in debt funds, and the rest in equity. Draw from the liquid bucket in bad years, refill from equity when markets recover. This calculator helps you model the numbers; the bucket structure protects those numbers from short-term market volatility.
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