SWP Explained: Turning Savings Into a Monthly Income
A Systematic Withdrawal Plan (SWP) is the reverse of a SIP. Instead of investing a fixed amount every month, you invest a lump sum once and withdraw a fixed amount every month. The money that stays invested keeps earning returns, so a well-planned SWP can provide a regular income for many years while the remaining balance continues to grow or shrink slowly.
How this SWP calculator works
Each month, the balance earns interest at your expected return (the yearly rate divided by 12), and then your withdrawal is taken out. The calculator repeats this for every month of the withdrawal period and shows:
- Total withdrawn – all the income you take out.
- Returns earned – how much your investment earned along the way.
- Final value – what's left at the end of the period.
- Money lasts – whether the balance runs out before the end.
The interest-only rule of thumb
If you withdraw no more than the interest your investment earns each month, your original capital stays intact. The calculator shows this "interest-only" figure. Withdraw more and you start eating into the capital; withdraw less and your balance grows. Many retirees aim close to this level so their savings last indefinitely.
Planning for inflation
A fixed withdrawal buys less every year as prices rise. Use the yearly increase option to raise your withdrawal each year, for example by your expected inflation rate. This gives a more realistic picture of how long your money will last.
Common uses of SWP
- Monthly income in retirement from a lump sum or pension payout
- Paying regular expenses such as school fees or rent from savings
- Moving gradually out of an investment rather than selling it all at once
Things to keep in mind
- Market-linked investments don't return a fixed rate. Poor returns early in the plan can shorten how long the money lasts, so use a conservative return.
- Withdrawals may be taxed as capital gains depending on your country and fund type.
- Some funds charge exit loads on early withdrawals.
- Review your plan once a year and adjust the withdrawal if returns or expenses change.