SWP Calculator — How Long Will the Money Last?
A Systematic Withdrawal Plan pays you a fixed amount each month while the balance stays invested. Enter your own assumption and see the balance year by year.
What this calculator is actually useful for
The final balance is the least interesting number on this page. What matters is the year the balance runs out, and how far that year moves when you change the return assumption by two or three percentage points. A withdrawal plan that only works at an optimistic rate is not a plan; it is a hope with a spreadsheet attached.
So run it twice. Once at the rate you expect, and once several points lower. If the money still lasts long enough in the second run, the withdrawal amount is sensible. If it does not, the amount needs reducing while that is still a choice rather than an emergency.
The risk this calculator cannot show
An SWP sells units every month, which means the order in which returns arrive matters, not just the average. A poor stretch in the early years sells units at lower values while the corpus is at its largest, and that damage is hard to recover from even if later years are good. A calculator applying a smooth annual rate cannot represent that at all.
The usual answer is not a cleverer calculator. It is splitting the corpus by when each part is needed: the first few years' requirement kept in low-risk categories such as liquid funds, and only the longer-dated portion left exposed. Our page on planning for senior citizens sets out how that split usually works.
Before you set one up
- Confirm the bank account on the folio is current, since every payout goes there and nowhere else.
- Check the exit-load position, because early payouts can redeem units still inside the scheme's defined period.
- Understand that each payout is a redemption and therefore a taxable event, as our page on mutual fund taxation explains.
- Decide the amount against your actual monthly requirement rather than what the corpus could support in a good year.
The full explanation of how an SWP works, and where it is the wrong tool, is on our page about the Systematic Withdrawal Plan. If you would like the numbers worked out against your own situation, get in touch.
SWP Calculator — Frequently Asked Questions
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