SWP Calculator — Systematic Withdrawal Plan

Initial Corpus

₹

₹1,00,000₹10,00,00,000

Withdrawal Amount

₹

₹1,000₹5,00,000

Withdrawal Frequency

Annual Step-Up

% p.a.

020

Expected Annual Return

% p.a.

120

Withdrawal Period

years

140

Remaining Corpus

₹0

Total Withdrawn

₹0

Returns Earned

₹0

Withdrawal Breakdown

Withdrawn vs remaining corpus

Total Withdrawn

₹0

Remaining Corpus

₹0

Returns Earned

₹0

What is a SWP?

A Systematic Withdrawal Plan Calculator helps you model regular income from a lump sum investment — answering the question every retiree and income investor needs answered: "How long will my corpus last, and what can I safely withdraw each month?"

SWP is a redemption facility offered by mutual fund schemes. Instead of withdrawing your entire investment at once, you instruct the fund to redeem a fixed number of units (or a fixed rupee amount) at regular intervals — monthly, quarterly, half-yearly, or yearly. The remaining units continue to stay invested and earn market-linked returns. Used thoughtfully, SWP can generate inflation-adjusted income for decades without eroding your principal.

What makes SWP distinctly different from a Fixed Deposit Calculator scenario is the compounding dynamic: your corpus earns returns on the full remaining balance every day, not just on the original deposit. In months when the fund grows faster than your withdrawal, your corpus actually increases. This compounding advantage can extend the life of your retirement savings substantially beyond what a conventional FD payout would provide.

For Indian investors, SWP has become one of the most popular post-retirement income strategies, particularly as low FD rates have pushed retirees towards debt mutual funds and balanced advantage funds. A ₹50 lakh corpus in a fund returning 8% p.a. generates roughly ₹33,333 per month in returns; if your monthly withdrawal is ₹25,000, the corpus keeps growing even as you withdraw — a scenario that is simply not possible with fixed-rate instruments.

The SWP Calculator on this page handles all the complexity: it simulates every withdrawal period across your entire withdrawal horizon, applies annual step-up to account for rising expenses, and produces a year-by-year schedule showing exactly how your corpus evolves. It also warns you immediately if your current settings lead to corpus depletion before your withdrawal period ends.

How to use this SWP calculator

Enter your Initial Corpus — this is the lump sum amount you are starting with, whether from a mutual fund accumulation, FD maturity, property sale, or any other source. Most Indian retirees work with amounts between ₹20 lakh and ₹2 crore.
Set your Withdrawal Amount — the fixed amount you want to withdraw per period. Start with your estimated monthly household expenses and adjust upward slightly to account for medical costs and travel that tend to rise in retirement.
Choose Withdrawal Frequency — select Monthly, Quarterly, Half-Yearly, or Yearly based on when you actually need cash. Most investors choose Monthly for predictable cash flow. If you have a pension or rental income covering basic expenses, Quarterly or Half-Yearly may suit you.
Set Annual Step-Up — enter the percentage by which you want your withdrawal to increase each year. A 5–6% step-up is a reasonable proxy for Indian inflation. Leave it at 0% if you want to model fixed withdrawals throughout.
Enter Expected Annual Return — this is your assumed annual return on the invested corpus. Use 7–8% for debt-oriented funds, 10–11% for balanced or equity-oriented funds. Be conservative — a lower assumption leaves a margin of safety.
Set Withdrawal Period — the number of years you plan to draw income. Plan for at least 25–30 years if you are retiring at 60; medical advances mean a 30-year retirement horizon is increasingly common in India.
Read the results — check the Remaining Corpus first. If it is zero or negative (depletion warning), reduce your withdrawal amount or increase your return assumption. Then study the year-by-year schedule to see exactly when and how your corpus evolves. Use the Corpus Depletion Chart to visualise the trajectory.

Formula & Methodology

Base SWP formula (no step-up):

FV = P × (1 + r)ⁿ − W × [(1 + r)ⁿ − 1] ÷ r

Where:
- FV = Remaining corpus at end of withdrawal period
- P = Initial corpus (opening investment)
- r = Return rate per withdrawal period (annual rate ÷ 12 for monthly, ÷ 4 for quarterly, ÷ 2 for half-yearly, ÷ 1 for yearly — expressed as a decimal)
- n = Total number of withdrawal periods (years × periods per year)
- W = Withdrawal amount per period

Maximum sustainable withdrawal (reverse mode):

W_max = P × r × (1 + r)ⁿ ÷ [(1 + r)ⁿ − 1]

This is the EMI formula applied to corpus drawdown — the maximum per-period amount that exactly depletes the corpus by the end of n periods.

When step-up is applied, the withdrawal amount W increases by the step-up percentage at the start of each year. This cannot be solved in closed form; the calculator runs a year-by-year simulation instead, applying the compounding factor and withdrawal for each period before stepping up for the next year.

Worked example:

| Parameter | Value |
|---|---|
| Initial Corpus (P) | ₹50,00,000 |
| Monthly Withdrawal (W) | ₹40,000 |
| Expected Return | 9% p.a. |
| Withdrawal Period | 15 years (n = 180 months) |

Monthly rate r = 9% ÷ 12 = 0.75% = 0.0075

Compound factor: (1.0075)¹⁸⁰ ≈ 3.838

FV = 50,00,000 × 3.838 − 40,000 × (3.838 − 1) ÷ 0.0075
= 1,91,90,000 − 40,000 × 378.4
= 1,91,90,000 − 1,51,36,000
= ₹40,54,000 remaining corpus

Total withdrawn over 15 years: ₹40,000 × 180 = ₹72,00,000
Returns earned by corpus: ₹40,54,000 + ₹72,00,000 − ₹50,00,000 = ₹62,54,000

The corpus earned ₹62.54 lakh in returns while paying out ₹72 lakh — meaning the investor effectively received more than the starting corpus in income, with ₹40.54 lakh still remaining at the end.

Key assumptions:
- Returns are annual, compounded monthly for all frequencies (monthly rate used as the base unit throughout)
- Step-up is applied at the start of each year to the base withdrawal amount
- Returns are assumed constant throughout the period; actual mutual fund returns fluctuate
- Tax on withdrawals is not deducted within the calculation — consult a financial adviser for post-tax planning
- Withdrawals within a period happen at the end of the period (end-of-period convention)

For a complementary view on how the corpus grows before retirement, use the Compound Interest Calculator to model your lump sum investment growth before you begin withdrawals.

Frequently Asked Questions

What is a Systematic Withdrawal Plan (SWP)?

A Systematic Withdrawal Plan (SWP) is a facility offered by mutual funds that lets you withdraw a fixed or variable amount from your invested corpus at regular intervals — monthly, quarterly, half-yearly, or annually. Unlike a lump sum redemption, SWP ensures your remaining units continue to earn market-linked returns while you receive a steady income stream. It is widely used by retirees and investors who need regular cash flow without liquidating their entire investment.

How does the SWP Calculator work?

The SWP Calculator simulates the withdrawal process period by period using your inputs. At each withdrawal interval, it compounds your current corpus at the expected annual return rate, then subtracts the withdrawal amount. This repeats for each period over the full withdrawal term, accounting for annual step-up in withdrawals if you choose one. The result shows your remaining corpus, total amount withdrawn, and total returns earned across the entire period.

What is the formula used in the SWP calculation?

For a constant withdrawal with no step-up, the remaining corpus formula is: FV = P × (1 + r)ⁿ − W × [(1 + r)ⁿ − 1] / r, where P is the initial corpus, r is the return rate per period, n is the total number of withdrawal periods, and W is the withdrawal amount per period. When annual step-up is applied, the corpus is computed iteratively year by year since the withdrawal amount changes each year.

What is the difference between SWP and SIP?

SIP (Systematic Investment Plan) and SWP are mirror images of each other. In a SIP you invest a fixed amount at regular intervals and your corpus grows over time; in an SWP you start with a corpus and withdraw fixed amounts at regular intervals, drawing down or sustaining that corpus depending on the returns. Many investors build a corpus through SIP during their working years and then switch to SWP in retirement to generate regular income.

What is the difference between SWP and a Fixed Deposit?

A Fixed Deposit (FD) pays a guaranteed, pre-determined interest rate, making it predictable but offering lower returns — typically 6–7.5% per annum for most Indian banks today. SWP withdrawals come from a mutual fund corpus that earns market-linked returns, which can be higher over the long term but are not guaranteed. SWP also offers greater flexibility — you can change the withdrawal amount or stop withdrawals — whereas breaking an FD early usually incurs a penalty.

Is SWP income taxable in India?

Yes, each SWP redemption is a partial redemption of mutual fund units and attracts capital gains tax. For equity mutual funds, gains held for more than one year are treated as Long-Term Capital Gains (LTCG) and taxed at 12.5% above ₹1.25 lakh per financial year; short-term gains are taxed at 20%. For debt mutual funds, gains are taxed as per your income tax slab. Consulting a tax adviser before setting up an SWP is recommended to plan your withdrawals efficiently.

How do I calculate the maximum sustainable monthly SWP?

The maximum monthly withdrawal that exactly depletes your corpus over a given period uses the same formula as an EMI calculation: W_max = P × r × (1 + r)ⁿ / [(1 + r)ⁿ − 1], where P is your initial corpus, r is the monthly rate, and n is the total number of months. You can use the reverse mode in our SWP Calculator — enter your target remaining corpus as ₹0 and the calculator will tell you the maximum per-period withdrawal amount.

What happens if my SWP withdrawals exceed my corpus returns?

When your withdrawal amount is higher than the returns your corpus earns in a given period, the corpus principal is drawn down — the remaining balance shrinks each period. If this continues long enough, the corpus will eventually be fully depleted before your intended withdrawal period ends. Our SWP Calculator warns you when this happens and shows the year in which the corpus runs out, so you can adjust your withdrawal amount or return expectation accordingly.

Should I choose monthly or quarterly SWP withdrawals?

Monthly SWP suits investors who need regular household cash flow — it mirrors a salary or pension income and simplifies budgeting. Quarterly SWP is often preferred by retirees whose expenses are less frequent (utility bills, insurance premiums) or who want to minimise the number of redemption transactions. Mathematically, less frequent withdrawals leave the corpus invested slightly longer each quarter, resulting in marginally higher returns over the long term, though the difference is small in practice.

What is the annual step-up feature in SWP and should I use it?

The annual step-up increases your withdrawal amount by a fixed percentage each year — for example, a 5% step-up on a ₹20,000 monthly withdrawal means you receive ₹21,000 in Year 2, ₹22,050 in Year 3, and so on. This is designed to keep pace with inflation so your purchasing power does not erode over time. If you expect your expenses to rise each year (as they typically do), setting a step-up equal to your expected inflation rate is a prudent approach.

Can my SWP corpus actually grow over time?

Yes — if the returns your corpus earns each period exceed your withdrawal amount, the remaining corpus will grow rather than shrink. For example, a ₹50 lakh corpus earning 10% per annum generates roughly ₹41,667 per month in returns; if your monthly SWP is only ₹25,000, the corpus will increase year by year. This is the ideal scenario, as it means your withdrawals are self-sustaining and your estate value also grows for future needs or heirs.

How long will a ₹1 crore corpus last with monthly SWP withdrawals?

The duration depends entirely on the withdrawal amount and the expected return. At 8% annual return, a ₹1 crore corpus sustains a ₹70,000 monthly SWP for approximately 20 years before depleting; at ₹50,000 per month it lasts well beyond 40 years and actually grows. Use our SWP Calculator with your exact numbers to find the sustainable withdrawal amount for your target period — the reverse mode calculates this in seconds.