SWP Calculator
Turn a retirement corpus into a monthly income. See how long your money lasts, how safe your withdrawal rate is, and what inflation does to your spending power.
Withdrawing ₹20,000/month from a ₹25.00 L corpus growing at 8.0% a year (a 9.6% withdrawal rate) makes the money last about 22.5 years — to age 83 on this projection, before tax.
Monthly withdrawal
Your retirement income
₹20,000/month
Money lasts 22.5 years · Until age 83
Retirement Score
Money lasts until age 83
Starting corpus
₹25.00 L
your capital
Total withdrawn
₹53.93 L
paid out to you
Corpus remaining
₹0
at exhaustion
Corpus over time
Your inputs
Every ₹100 you withdraw
How each year's income splits between returns earned and your own capital. Early years lean on growth; later years dip into capital.
- from returns
- from capital
- ₹76from returns
- ₹24from capital
- ₹58from returns
- ₹42from capital
- ₹2from returns
- ₹98from capital
Withdrawal rate
9.6%
of your starting corpus, drawn per year
At 8.0% return, the corpus earns about ₹16,667/mo. Drawing only that keeps the balance level in nominal terms.
Retirement timeline
- Age 60Retirement₹25.00L
- Age 65Year 5₹22.55L
- Age 70Year 10₹18.90L
- Age 75Year 15₹13.47L
- Age 80Year 20₹5.37L
- Age 83Year 23Exhausted
What if you live longer?
Your corpus runs out at age 83 — short by 7.5 years of age 90. To fund those extra years at 8.0%, you'd need about ₹13.50 L more corpus today (or a lower withdrawal).
Inflation reality check
What a fixed ₹20,000 buys in today's money at 6% inflation.
Corpus projection
Corpus survival probability
How long ₹20,000/mo lasts at different returns.
8% return
lasts 22.5 yrs
10% return
lasts 40+ yrs
12% return
lasts 40+ yrs
Retirement health score
Tight
Money lasts to about age 83 — close to the edge. Consider trimming withdrawals.
What if returns are different?
Same ₹20,000/mo from ₹25.00 L, across a range of annual returns.
| Annual return | Corpus lasts to | Total withdrawn | Remaining |
|---|---|---|---|
| 8%your plan | Age 83 | ₹53.93 L | ₹0 |
| 10% | Age 100+ | ₹96.00 L | ₹77.70 L |
| 12% | Age 100+ | ₹96.00 L | ₹6.13 Cr |
| 14% | Age 100+ | ₹96.00 L | ₹20.74 Cr |
A constant return is assumed each year. Real markets vary, and a run of poor early returns can drain a corpus faster than the average implies.
Key insight
Drawing ₹20,000/mo is a 9.6% withdrawal rate. That's well above the 4% rule of thumb — sustainability depends heavily on returns holding up.
Key takeaways
- Monthly income: ₹20,000
- Withdrawal rate: 9.6% a year
- Money lasts 22.5 years (to age 83)
- Income from returns alone: ₹16,667/mo
- Total drawn: ₹53.93 L
Continue planning
How long an SWP corpus lasts is calculated
Bₘ = Bₘ₋₁ × (1 + i) − W (run until Bₘ ≤ 0)
- Bₘ
- corpus balance at the end of month m (B₀ = starting corpus)
- i
- monthly return = annual rate ÷ 12 ÷ 100
- W
- monthly withdrawal (stepped up yearly if enabled)
- m
- months elapsed; the corpus lasts until Bₘ first hits 0
Worked example
With your inputs — ₹20,000/month from a ₹25.00 L corpus at 8.0% a year: the monthly return is i = 0.667%, so the corpus first earns about ₹16,667 in month 1, then your ₹20,000 withdrawal is taken — a 9.6% annual withdrawal rate. Stepping that recurrence month by month, the money runs out after about 22.5 years — to age 83, with ₹53.93 L drawn in total. This is a before-tax projection that assumes a constant return every year, not a guarantee.
Most asked SWP questions
An SWP lets you withdraw a fixed amount from an invested corpus at regular intervals — usually monthly. The remaining balance stays invested and keeps earning returns, so it's a way to turn a lump sum into a recurring retirement income.
We project your corpus month by month — growing it at the expected return and subtracting each withdrawal — until it runs out or reaches the end of the horizon. The score compares how long the money lasts against an age-85 target: lasting to 85 or beyond scores 100. It's a planning gauge, not a guarantee.
The best-known rule of thumb is the '4% rule' (Bengen / Trinity study). It comes from US market history and assumes a ~30-year retirement, a stock-and-bond portfolio, and withdrawals raised for inflation each year. Under those specific conditions, drawing about 4% in the first year usually lasted the full period. It's a rule of thumb, not a guarantee, and may not hold for other markets, longer retirements, or fixed withdrawals. This calculator shows your exact rate and how long the money lasts on your assumptions.
Yes. A fixed ₹20,000 withdrawal buys less every year as prices rise. Turn on the step-up option to raise your withdrawal with inflation each year — this protects your purchasing power but drains the corpus faster, which the projection reflects.
This tool assumes a constant return every year. In reality, a run of poor returns early in retirement — while the corpus is largest and you're still withdrawing — drains it far faster than the average rate suggests. Treat the duration here as a planning estimate, not a promise.
The complete guide to systematic withdrawal plans
How an SWP turns a corpus into income
A Systematic Withdrawal Plan converts an invested lump sum into a regular paycheck. Each month you draw a fixed amount while the rest stays invested and keeps compounding. The single question that decides everything is whether your withdrawals outrun your returns — if they do, the balance falls every month until it's gone; if they don't, the corpus can, in this projection, outlast a long retirement.
What a safe withdrawal rate looks like
Your withdrawal rate is annual withdrawals divided by your corpus. The well-known "4% rule" comes from US historical studies and assumes a ~30-year retirement, a stock-and-bond mix, and withdrawals raised for inflation each year; under those conditions, drawing around 4% in the first year usually lasted the full period. It's a benchmark, not a promise — higher rates raise depletion risk quickly. This calculator shows your exact rate and the age your money runs out.
Why inflation matters so much
A fixed ₹20,000 a month buys noticeably less after a decade. To keep your real income steady you have to step the withdrawal up each year — but that also drains the corpus faster. The inflation reality check shows both sides so you can decide between a stable nominal amount and stable purchasing power.
Sequence-of-returns risk
This tool assumes one steady return every year. Real markets don't cooperate: a stretch of weak returns early in retirement, while the corpus is largest and you're still withdrawing, can drain it far faster than the average rate implies. Two portfolios with identical average returns can end very differently depending on the order. Build in a buffer and revisit the plan regularly.
SWP vs annuity vs FD
An SWP keeps your money invested and flexible but isn't guaranteed. An annuity hands you a guaranteed lifetime income in exchange for the lump sum and flexibility. A fixed deposit offers steady, low-risk interest but rarely beats inflation. Many retirees blend them — an annuity or FD for essential expenses, an SWP for growth and flexibility.