Tool 06 · Savings rate
The one number that sets the clock.
Here's the secret of financial independence: how soon you get there depends far more on the share of your pay you keep than on how much you earn. Find your number on the curve.
Saving 50% of your pay.
Share of take-home pay you save and invest.
Target pot = yearly spending ÷ withdrawal rate.
Pro features. Add your head start, see the exact age you’re free, read insights, and export the full table.
Your real timeline
Refine the model
A head start shortens the climb — the curve drops to match.
So we can show the actual age you reach independence.
Years to FI by savings rate
Compare return rates
| Annual return | Years to FI | Free at age |
|---|
Why your savings rate sets the clock
The most powerful number in early retirement isn’t your salary — it’s your savings rate, the share of take-home pay you keep and invest. It works from both ends at once: saving more shovels money in faster and lowers the spending you need to cover, which shrinks your target pot. That double effect is why someone on a modest income with a high savings rate can reach independence sooner than a high earner who spends most of it.
The curve shows years to financial independence at every savings rate, assuming you start from zero, earn a steady real return, and live on the rest. Find your rate on the line to see your timeline. Pro lets you add a head start (money already invested) and your age, to show the exact age you’d reach independence.
This insight was popularised by the influential essay "The Shockingly Simple Math Behind Early Retirement", and once you see it you can’t unsee it. Because your savings rate simultaneously sets how fast the pot fills and how small it needs to be, its effect on your timeline is dramatic and non-linear. Going from a 10% to a 25% savings rate can cut a decade or more off your working life — a far bigger win than most people expect from what looks like a modest change.
A worked example
50% savings rate · 7% real return · 4% withdrawal · starting from zero
At a 50% savings rate it takes roughly 15 years to reach financial independence — and crucially, that’s true whether you earn €40,000 or €400,000. Drop to a 25% rate and the timeline stretches to around 25 years; push to 65% and it falls under 11. The salary sets your lifestyle; the rate sets the clock.
Things to keep in mind
- Use take-home (net) pay. Measure what you save as a share of the money that actually lands in your account, so the ratio reflects reality.
- Watch lifestyle creep. The fastest way to lower your savings rate is to let spending rise with every pay increase. Banking raises instead of spending them accelerates everything.
- Windfalls count. Bonuses, tax refunds and gifts saved rather than spent lift your effective rate and pull your date forward.
- A head start helps. Money already invested shortens the climb; add it (and your age) in Pro to see the exact age you’d be free.
Frequently asked questions
Where does this idea come from?
It’s the core of a widely shared piece of personal-finance writing showing that your savings rate — not your income — is the dominant factor in how soon you can retire. The curve on this page is the same relationship, plotted for every rate.
Does income really not matter at all?
Income matters for your quality of life and makes a high savings rate easier to achieve. But for the timeline, only the rate counts: two people saving 40% of their pay reach independence in about the same number of years, whatever they earn.
Why does the rate matter more than income?
Years to FI depend on the ratio of what you save to what you spend — not the absolute amounts. Double your pay but keep the same rate and your timeline barely moves; raise the rate and it drops sharply.
What counts toward my savings rate?
Everything you invest or use to pay down debt, as a share of take-home pay — pension contributions, index funds, extra mortgage payments. Use net (after-tax) pay for the cleanest picture.
What does the curve assume?
That you start from zero, returns are steady and after-inflation, and you spend the part of your pay you don’t save. It’s an illustration of the relationship, not a personalised forecast.