| Year | Opening corpus | Growth (return) | Withdrawal (annual) | Tax | Closing corpus |
|---|
Use this SWP calculator to plan monthly withdrawals from a mutual fund corpus. It estimates corpus longevity, annual withdrawal step-up impact, and tax impact when enabled.
Compliance note: Content on this page is for general information and education. It should not be treated as personalized investment, legal, or tax advice. Please consult a qualified professional before taking financial decisions.
An SWP (Systematic Withdrawal Plan) lets you withdraw a fixed amount at regular intervals, usually monthly, by redeeming fund units. If returns are strong and withdrawals are modest, your corpus can last longer. If withdrawals are high or returns are weak, the corpus can deplete earlier.
Monthly rate: i = (1 + r)^(1/12) - 1, where r is the annual return.
Balance after n months (fixed withdrawal W): Bn = P(1+i)^n - W * ((1+i)^n - 1) / i
Assumptions: withdrawals at month-end, constant average return, no fees, and estimated tax rates. Step-up is applied annually when enabled.
Use this SWP calculator to test whether your corpus can support your required monthly income over your chosen horizon. Set Starting investment, Monthly withdrawal, Expected annual return, Annual Withdrawal Step-Up (Inflation Adjustment), and Time horizon.
It is a planning tool. Actual outcomes will differ based on real returns, taxes, and market volatility.
A monthly withdrawal that feels enough today may not have the same purchasing power after 10 to 15 years. If expenses rise with inflation but withdrawals stay flat, lifestyle pressure can rise later.
Most retirees compare three styles: flat SWP, step-up SWP, and inflation-adjusted SWP. This calculator supports annual increase settings so you can test how rising withdrawals change corpus life.
For better planning, test at least three scenarios: conservative, normal, and stress case.
Each month, your corpus may grow based on return assumptions and reduce due to withdrawals. If withdrawals are high relative to returns, corpus can deplete sooner. If withdrawals are moderate and returns are reasonable, corpus may last longer and can sometimes grow.
When annual step-up is enabled, withdrawals increase each year. That improves inflation protection but can shorten corpus life unless starting corpus and returns are strong enough.
Even with a good long-term average return, weak returns in the first few years can hurt SWP sustainability because withdrawals continue during downturns. Early weak years can leave fewer units to recover later.
A safer SWP plan usually combines realistic return assumptions, a cash buffer, and flexibility to adjust withdrawals.
If your plan remains workable in stress testing, it is usually more robust.
Rules of thumb are not perfect, but they help spot unrealistic plans. If you withdraw too high a percentage of corpus every year, corpus can run out faster, especially after taxes and volatility. If withdrawals rise every year, you usually need either a larger starting corpus, a lower starting monthly withdrawal, or both.
Use this calculator to compare flat versus step-up scenarios and see how long each plan lasts.
Yes, for most investors this is sensible. Markets can fall, unexpected expenses happen, and you do not want to redeem aggressively during weak market phases.
A practical approach is to keep 6 to 18 months of expenses in safer liquid options, and run SWP from your long-term portfolio. This reduces pressure on your SWP during tough periods.
Use this question for every run:
"If I start withdrawing ₹X per month today and increase it by Y% every year, will my corpus last for Z years?"
Then compare outcomes by changing only one variable at a time: withdrawal amount, annual step-up, or return assumption for stress testing. If the plan works only under optimistic returns, treat it as high risk.
| Parameter | Flat SWP | Step-up SWP | Inflation-adjusted SWP |
|---|---|---|---|
| Withdrawal pattern | Same amount throughout | Increases by a fixed % every year | Increases every year to protect purchasing power |
| Best for | Simplicity and short-to-medium horizons | Predictable lifestyle upgrades | Long horizons where expenses rise meaningfully |
| Purchasing power over time | Falls | Partially protected | Better protected (closer to same lifestyle) |
| Corpus life (all else same) | Usually longest | Shorter than flat | Often shortest if inflation assumption is high |
| Risk if early market years are bad | Moderate | Higher | Higher because withdrawals rise over time |
| Planning comfort | Easy to understand | Easy to budget yearly | Most realistic for retirement math |
| When it can fail | If starting withdrawal is too high | If step-up is high and returns are lower | If inflation is high or returns are lower for long periods |
| Good habit | Review annually | Review annually | Review annually and keep flexibility |
Further reading to deepen your SWP understanding.
