What is the SWP Calculator?
A Systematic Withdrawal Plan (SWP) is the mirror image of a SIP: instead of investing monthly, you withdraw a fixed amount monthly from a mutual fund corpus while the remaining balance stays invested. It is the standard tool for converting a retirement corpus into a paycheck, and this calculator simulates the balance month by month so you can see the exact trajectory.
The critical question an SWP answers is sustainability: will the corpus outlive you? If your investments earn more than you withdraw, the corpus can last indefinitely — or even grow. If withdrawals outpace returns, the corpus depletes on a predictable schedule. This calculator shows the year-wise balance so retirees, sabbatical-takers, and anyone living off a corpus can plan with certainty.
SWPs are also tax-efficient compared to FD interest or rent: each withdrawal is partly principal (tax-free) and partly gains (taxed as capital gains), and equity SWPs enjoy the ₹1.25 lakh annual LTCG exemption. For retirees seeking regular income without locking capital into a low-yield annuity, an SWP is usually the better structure.
How SWP balance evolves
Balanceₘ = Balanceₘ₋₁ × (1 + i) − W
| Symbol | Meaning |
|---|---|
| i | Monthly rate of return on the corpus |
| W | Fixed monthly withdrawal |
| Balance | Remaining corpus after each month |
Worked example
A ₹50 lakh corpus earning 9% with ₹25,000 monthly withdrawals: after 20 years you have withdrawn ₹60 lakh and still hold ≈ ₹48 lakh — the corpus funded itself. Raise withdrawals to ₹45,000 and the corpus exhausts around year 19.
| Monthly withdrawal | Withdrawn in 20y | Balance after 20y |
|---|---|---|
| ₹25,000 | ₹60.0 L | ≈ ₹48 L |
| ₹35,000 | ₹84.0 L | ≈ ₹22 L |
| ₹45,000 | ₹1.08 Cr | Depletes ~year 19 |
Benefits of the SWP Calculator
Converts a corpus into predictable monthly income
A lumpsum becomes a salary-like cash flow without surrendering the whole corpus at once.
Remaining balance keeps compounding
Unlike drawing down a savings account, the unwithdrawn portion stays invested and can grow, extending the corpus’s life.
More tax-efficient than FD interest or annuity income
Only the gains portion of each withdrawal is taxed as capital gains; the principal returns tax-free, and equity enjoys the ₹1.25L LTCG exemption.
Flexible — change or stop withdrawals anytime
You can raise, lower, pause, or stop the SWP without penalty (exit loads may apply on redemptions within the load period).
Preserves capital for heirs
Unlike an annuity that absorbs the principal, any remaining SWP balance passes to your nominees.
Limitations to keep in mind
Corpus can deplete if returns disappoint
A stretch of poor returns early in the withdrawal period can shrink the corpus faster than planned.
Market crashes early in retirement are dangerous
Sequence-of-returns risk means a 30% drop in year 1–3 of withdrawals permanently damages the corpus more than the same drop later.
Income is not guaranteed like a pension
There is no insurer backing the payout; the corpus is whatever the market leaves you.
Requires periodic review of withdrawal rate
A fixed withdrawal that was safe at 9% returns becomes dangerous if returns fall to 6%.
Inflation erodes a fixed withdrawal
₹30,000/month buys less every year; you must plan a rising withdrawal or a larger starting corpus.
Common mistakes to avoid
Withdrawing from pure equity in early retirement
A 30% crash in year 1–3 of withdrawals can permanently damage the corpus. Use hybrid or debt funds for the SWP years.
Setting withdrawals above the sustainable rate
Above ~5–6% of corpus per year, depletion risk rises sharply; the 4% rule exists for a reason.
Ignoring inflation in withdrawals
₹30,000 a month will not fund the same life in year 15 — plan a rising withdrawal or a larger corpus.
Keeping the entire corpus in one fund
A redemption freeze or a bad fund can interrupt income; diversify across two or three funds.
No cash buffer for bad years
Without 2–3 years of withdrawals in a liquid fund, a crash forces you to sell equity at the worst time.
Expert tips for better results
Keep 2–3 years of withdrawals in a liquid fund
This buffer lets you skip redeeming equity during crashes, refilling it in good years.
Use a conservative hybrid or balanced advantage fund for the SWP
Lower volatility matters more than maximum return when you are decumulating.
Start below 4% and review annually
Begin conservatively; you can always raise the withdrawal if returns exceed expectations.
Step up the withdrawal with inflation
A 5–6% annual increase keeps purchasing power stable through a 25–30 year retirement.
Split the corpus: equity for growth, debt for income
A two-bucket strategy funds withdrawals from debt while equity grows untouched for the long run.
When to use this calculator
- Retirement income from a mutual fund corpus
- Funding a sabbatical or career break
- Regular income from an inheritance or windfall
- Supplementing pension income tax-efficiently
Frequently asked questions
Sources & references
- SEBI Investor Awareness — Systematic Withdrawal Plans
- RBI concept note on retirement income and annuities
- WealthRise Methodology page — SWP monthly simulation convention