Retirement Drawdown Calculator: How Long Will Your Savings Actually Last?

Retirement Drawdown Calculator
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yrs
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Compounded annually; converted internally to an equivalent monthly rate.

MONTHLY WITHDRAWAL

600€ at the start of every month

Depletes the balance to zero after 20 years, at 4% a year.

What is a good retirement nest egg?

There’s no single number that works for everyone, because it depends entirely on your expected spending, other income sources (like a pension or investment property), and how long you expect retirement to last. That said, a few common benchmarks show up again and again:

  • 10–12x your final salary — a widely cited target for a comfortable retirement
  • 25x your annual expenses — the inverse of the 4% rule (if you need €40,000/year, you’d want roughly €1,000,000 saved)
  • $1–1.5 million — often cited in the US as a rough target for a middle-to-upper-middle-class retirement

The more useful exercise isn’t hitting a round number, it’s working backward from your expected monthly spending, your retirement length, and your expected rate of return, and seeing whether your current trajectory gets you there.

How much money do most people retire with?

Reality often looks a lot more modest than the benchmarks above. Survey data consistently shows that many people retire with far less than $1 million. In the US, median retirement account balances for people near retirement age are frequently in the low-to-mid six figures, and a significant share of retirees rely heavily on state pension or social security as their primary income, with savings as a supplement rather than the whole picture.

This is exactly why a drawdown calculator matters more than a single “magic number.” Someone retiring with $150,000 and a full state pension can structure a sustainable income very differently than someone retiring with $150,000 and no other income at all.

How long will $500,000 last using the 4% rule?

The 4% rule is the classic starting point for retirement withdrawals. It says you can withdraw 4% of your portfolio in year one, then adjust that amount for inflation each year after, with a reasonably low risk of running out of money over a 30-year retirement.

On a $500,000 nest egg, that works out to $20,000 in the first year, or roughly $1,667 a month. The rule was designed around a 30-year horizon and a portfolio split between stocks and bonds — it assumes market growth roughly offsets your withdrawals and inflation adjustments over time.

That said, 4% is a guideline, not a guarantee. It depends heavily on your actual investment returns, the sequence of good and bad years early in retirement, and how strictly you stick to the withdrawal amount. A drawdown calculator that lets you plug in your own balance, expected return, and time horizon gives you a far more personalized answer than a flat percentage.

Does retirement money double every 7 years?

This is the Rule of 72, a quick mental-math shortcut for compound growth: divide 72 by your annual return rate, and you get the approximate number of years it takes for your money to double.

  • At 10% annual returns → money doubles roughly every 7.2 years
  • At 7% → roughly every 10.3 years
  • At 4% → roughly every 18 years

So “doubling every 7 years” is only accurate at around a 10% return — an optimistic long-term average for a stock-heavy portfolio, not a guarantee. It’s a handy sanity check while you’re still accumulating savings, but once you shift into retirement and start withdrawing, growth and withdrawals are working against each other, which is a very different calculation — one a drawdown calculator handles far better than a doubling rule.

Can a couple retire at 60 with 500K?

It’s possible, but tighter than it looks at first glance. Retiring at 60 means potentially funding 30+ years of retirement — longer than the 4% rule’s original assumptions — and often before state pension or social security kicks in.

For a couple with $500,000:

  • At a conservative 4% withdrawal, that’s about $20,000/year combined — likely not enough on its own in most higher cost-of-living areas, but workable alongside other income (a paid-off home, part-time work, or a pension starting later).
  • Retiring earlier means a longer runway before other income sources begin, so it’s worth modeling a lower withdrawal rate in the early years, stepping up once a pension or state benefit starts.
  • Two people generally means higher combined expenses, but also two potential state pension entitlements down the line — worth mapping out exactly when each kicks in.

The honest answer is “it depends,” which is precisely why running your own numbers through a calculator — rather than relying on a single rule of thumb — matters so much at this stage.

The bottom line

Rules of thumb — the 4% rule, the Rule of 72, “25x your expenses” — are useful for a rough gut check, but retirement income planning is personal. Your actual number depends on your balance, how long you need the money to last, your real expected rate of return, and whether you want the balance to hit exactly zero or leave something behind.

A retirement drawdown calculator lets you replace the guesswork with your own numbers — how much you can withdraw monthly, or how many years your savings will realistically last at a given withdrawal rate.

This article is for general information only and isn’t financial advice. Speak with a licensed financial advisor about your specific situation.

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