SWP Calculator with Fund Phases
Model a growth phase followed by regular withdrawals, and compare the effect of return, step-up and inflation assumptions.
SWP Deep Dive
What an SWP calculator estimates
An SWP calculator projects the balance remaining while regular withdrawals are made. This model includes a growth phase before withdrawals and a withdrawal phase afterwards.
A Systematic Withdrawal Plan in a mutual fund generates cash by redeeming units. It can return invested capital as well as gains. It is not an interest payment or a guaranteed pension. AMFI describes SWP and redemptions in its investor booklet. [1]
How the two phases work
During the growth phase, the starting corpus compounds without withdrawals. During the withdrawal phase, a monthly amount is removed and the remaining corpus receives the assumed growth.
The annual return input is divided by 12 for monthly calculations. For example, ₹1 crore left untouched for five years at an 11% annual input grows to about ₹1.73 crore under this monthly convention. The result differs from annual compounding at 11%.
A worked withdrawal example
Start with ₹1 crore, begin withdrawals immediately and use a constant 9% annual input divided into monthly rates. Withdrawals occur before each month's growth. The following 25-year illustrations exclude tax and costs.
| Monthly withdrawal | Total withdrawn over 25 years | Projected ending corpus |
|---|---|---|
| ₹60,000 fixed | ₹1.80 crore | ₹2.63 crore |
| ₹80,000 fixed | ₹2.40 crore | ₹37.22 lakh |
Increasing the initial ₹60,000 withdrawal by 6% after every 12 months exhausts this modelled corpus in about 19 years. A step-up changes the cash removed; it does not increase the return.
What a survival result means
A balance remaining at the selected end age means the entered scenario lasted through that period under the constant-return assumption. It does not establish that withdrawals will be sustainable in actual markets or beyond the selected horizon.
Inflation Impact on Withdrawals
At 6% annual inflation, a fixed ₹50,000 monthly withdrawal in 20 years has purchasing power of about ₹15,590 today.
Present purchasing power = Future nominal amount ÷ (1 + annual inflation rate)years
The inflation setting changes the displayed purchasing power. It does not automatically increase withdrawals. Use the annual percentage or fixed-amount step-up to model rising cash needs separately.
How to Use the SWP Calculator
Enter the initial corpus, current age, withdrawal start age and life expectancy.
Enter the annual return assumption. The same assumed rate applies to both phases.
Enter the initial monthly withdrawal.
Choose fixed withdrawals, a percentage step-up or a fixed-amount annual increase.
Add an inflation assumption if you want to view real purchasing power.
Review total withdrawals, the remaining corpus, depletion estimates and the yearly table. Save alternatives in What-If Scenarios.
For immediate withdrawals, set current age and withdrawal start age equal. Delaying the start allows more growth and, when the end age stays unchanged, reduces the number of withdrawal years.
Understanding Withdrawal Projections
The monthly calculation
The monthly calculation
During growth: Closing corpus = Opening corpus × (1 + monthly rate).
During withdrawals: Closing corpus = (Opening corpus − withdrawal) × (1 + monthly rate).
The withdrawal is limited to the balance available. The model stops paying from an exhausted corpus. Percentage step-ups multiply the monthly withdrawal by 1 plus the step-up rate; fixed step-ups add the selected amount each year.
Why the order of returns matters
Why the order of returns matters
Real markets do not deliver the same return every month. Losses early in a withdrawal period can leave fewer units invested for a later recovery. Two return sequences can therefore produce different withdrawal outcomes even when their overall no-withdrawal return is the same.
The constant-rate model does not simulate this sequence risk. Comparing several lower and higher rates helps test sensitivity, but does not recreate a market path or a probability of success.
Withdrawal rates and dashboard comparisons
Withdrawal rates and dashboard comparisons
There is no universally safe withdrawal percentage. A fixed 7% illustration is a comparison input, not an optimum or a recommendation. The maximum-withdrawal calculation is a mathematical boundary under its timing and return assumptions, not a practical spending limit.
Tax and withdrawal costs
Tax and withdrawal costs
An SWP redeems units. Tax treatment depends on the gain in those units, fund classification, purchase dates, holding period and investor status. It cannot be inferred from the withdrawal amount alone. This model does not deduct capital gains tax or exit loads, and does not establish that an SWP is always more tax-efficient than another income source.
Use the SIP Calculator for accumulation, the Retirement Planner for a retirement projection and the Inflation Impact Calculator for purchasing power.
Frequently Asked Questions
Can my corpus grow while I withdraw money?
Does an SWP withdraw only profit?
Does inflation adjustment change the withdrawal schedule?
Can I use the model when withdrawals have already started?
Is the full withdrawal taxable as a capital gain?
Assumptions and Disclaimer
The model uses constant monthly growth, regular month-start withdrawals and annual step-ups. It excludes market paths, additional investments, tax, exit loads and separate investment charges. Inflation is held constant when enabled.
This is education, not investment advice. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Past performance does not guarantee future results.
Sources and Review
Content reviewed on 26 October 2026.