What is your 'enough' number? How to define your financial finish line

Everyone online agrees on how much money is enough. Save 25 times what you spend in a year, and you can stop. Tidy. Also American, and for anyone retiring in Europe, wrong by a decent margin.

So, what is your enough number? It is the size your savings have to reach before they can pay for your life without a salary behind them. The phrase gets used two ways: a target you build towards, and the spending level where extra money stops lifting your mood. We mean the first here. The second is why the first is so hard to feel finished about.

What does ‘enough’ mean in personal finance?

In personal finance, enough marks the point where your assets can fund the life you want on their own. Not rich, not the brochure kind of comfortable. A specific pot that throws off enough income to cover a specific year of spending, indefinitely.

Two camps use the word and mean different things. Wellbeing researchers treat enough as a spending plateau: the income past which another euro barely changes how you feel. The financial-independence crowd treats it as a portfolio target: the figure your savings reach that lets you hand in your notice. Both are real. You need the target to retire, and the plateau to stop that target creeping up as your idea of a normal life inflates. Build the target first, then the plateau. Leave the plateau out and the number runs away from you.

How do you calculate your ‘enough’ number?

Take the annual spending you want to fund. Subtract the guaranteed income you will get for life, mainly a state pension for most Europeans. Multiply what remains by a number between about 29 and 33. The product, rounded, is your enough number.

Why does a European need a bigger multiple than 25x?

Because a lower safe withdrawal rate forces a larger multiple, and Europe’s realistic rate sits below the American 4%. Where the US saves 25 times spending, a euro-area portfolio should aim nearer 29 to 33 times, a 3.5% to 3% draw.

The 25 comes from a 1990s study by the American planner William Bengen ↗ (opens in new tab): a retiree drawing 4% in year one, rising with inflation, rarely ran out over 30 years. One divided by 4% gives you 25. But Bengen used American market history, which ran unusually kind. When the economist Wade Pfau ran the same test across 20 countries ↗ (opens in new tab), the 4% rule survived in almost none; in 11 of the 20, the safe rate fell below 3%. Euro-area returns look thin too. The 10-year euro-area government bond ↗ (opens in new tab) yields around 3.4% against inflation near 2.8% ↗ (opens in new tab), a real return of about 0.6%. These figures stay illustrative; investment values can fall as well as rise, and actual returns depend on fund performance, charges, and tax.

How does a state pension shrink the number?

It drops a guaranteed income floor under your spending, so only the gap above it needs a portfolio. The higher the floor, the smaller the fund you build. That floor ranges from about a third of your pay to nearly all of it.

Every EU country pays a state pension ↗ (opens in new tab) for life from the legal retirement age. But the OECD’s headline figure is the whole mandatory pension: the state pension plus any workplace pension you must pay into. Across the OECD’s 2025 pension figures ↗ (opens in new tab), the average earner gets 96% in the Netherlands, 53% in Germany, and 34% in Ireland. The Dutch 96% is mostly a near-universal, auto-enrolled workplace pension; the state alone replaces closer to 40%. Germany’s 53% and Ireland’s 34% are the state carrying it almost alone, because their workplace pensions stay voluntary. Same salary, three different-sized holes to fill from savings. Your hole is bigger if you earn above average or are self-employed, so check your own national pension estimate, not the average.

What does the number look like in Germany versus Ireland?

Wildly different, from the same salary and spending. A saver wanting €30,000 a year needs roughly €260,000 saved in Germany, where the state pension runs generous, but about €470,000 in Ireland, where the mandatory floor sits far lower. Nearly double, from a border.

Take someone earning €40,000 after tax who wants that €30,000 a year. For scale, Eurostat ↗ (opens in new tab) puts average euro-area spending near €22,300, so €30,000 buys a comfortable life for one. On the same illustrative assumptions and a 3.5% withdrawal rate, that’s a multiple of about 29. Germany’s state pension replaces roughly 53% of that salary, about €21,000, so the portfolio covers only the missing €9,000, about €260,000. Ireland’s mandatory State Pension replaces about 34%, near €13,500, so the gap widens to €16,500 and the target climbs to about €470,000.

Skip the pension step and both chase the naive figure instead: €30,000 with no floor subtracted needs roughly €860,000. The German floor cuts that by about 70%. Two caveats. These are average-earner figures for someone leaning on the state alone, and the pension only starts at state-pension age, so retiring early needs a separate bridge pot. Most Irish workers also hold an occupational pension, which lifts that 34% floor. All illustrative, of course; markets can fall as well as rise.

How do Lean, Fat, Coast, and Barista FIRE change your enough number?

The financial-independence community ↗ (opens in new tab) keeps its own labels for the same sum, your FIRE number, or your financial independence number. They are American in origin, worth knowing so the words stop sounding like a club you are not in.

None of them touch the arithmetic. Lean and Fat change the spending you feed in; Coast and Barista change when you stop. The multiplier and the pension floor stay put. One catch sits under all four: the pension floor pays nothing until state-pension age, so retiring early needs a bridge pot for the gap years the floor cannot reach.

How do you know when you have enough money?

You know on paper long before you know it in your gut. On paper, enough arrives when your reviewed target, spending minus your guaranteed floor, times your multiple, is covered by what you have saved. The real work is deciding, in advance, that this figure counts as the finish line.

Write it down now, while you’re calm and years away, because you won’t trust it when you arrive. A figure set today carries an authority a figure you eyeball at 61 does not. Give it a rule: this number, reviewed once a year, is the line. Cross it, and you can stop, downshift, or keep working because you want to, not because you’re afraid.

One thing quietly wrecks the plan: lifestyle creep ↗ (opens in new tab). As your pay rises, spending rises to meet it, and last year’s treat becomes this year’s baseline, dragging the target up faster than you can walk towards it. The fix is dull: cap the spending figure on purpose, and review it rather than letting it drift with your salary.

Why does hitting the number still not feel like enough?

Because feelings adapt. Psychologists call it hedonic adaptation: after any gain, good or bad, satisfaction drifts back towards where it started. Hit your number and the relief fades within weeks. The figure that promised freedom ends up feeling like a Tuesday.

You’ll cross the line on an ordinary afternoon. Nothing will mark it. No horn, no letter, no warm flood of arrival. You’ll refresh the figure twice to be sure, put the kettle on, and go back to whatever you were doing, because that’s what a person does. The plan hasn’t failed. This is what enough feels like from the inside, which is to say, like almost nothing at all.

The research backs the anticlimax. Diener, Lucas and Scollon’s study of adaptation ↗ (opens in new tab) found lottery winners settle back near their old baseline. Injury survivors recover far more of their old mood than you’d expect. In American data, Kahneman and Deaton put the point where day-to-day mood stops climbing ↗ (opens in new tab) at around $75,000 of income. A [2023 re-analysis](https://www.pnas.org/doi/10.1073/pnas.2208661120) with Killingsworth pushed it nearer$100,000 and found the plateau mostly bites people who were already unhappy. Those are US dollars and US samples, not a euro target. More money keeps helping. But the help keeps shrinking, and it never arrives as the sense of “done” you were sold.

This is where careful savers get stuck. They hit the number. The feeling doesn’t come. So they decide it was too low and set a bigger one. The FIRE crowd calls it one-more-year syndrome, and it can run a decade. Even the rule’s inventor keeps nudging his: Bengen has raised his 4% to 4.7% ↗ (opens in new tab), which tells you the target was never fixed.

Kurt Vonnegut told the cleanest version of the cure. In a short poem in the New Yorker in 2005, later borrowed by the investor John Bogle for a book called Enough, Vonnegut recalls telling the novelist Joseph Heller that their billionaire host had made more in a single day than Heller earned in all the years since Catch-22. Heller says he has something the host never will: the knowledge that he has enough. Enough, then, isn’t a sum your account reaches; it’s a line you draw and honour. The number tells you when you can draw it. Whether you feel finished is your call, not the market’s.

What should you do with your number this week?

Get the rough version down this week; the precise one can wait for a spreadsheet and a wet Sunday. Write down what you spend in a year now, not what you would like to. Look up your state pension estimate and take it off the top. Multiply what is left by about 29, on the same illustrative assumptions as before. It will be wrong in the third digit and right in the first, which is all a target needs to be.

Then write the number somewhere you’ll find it again, and leave it alone for a year. It won’t feel like a finish line. Finish lines rarely do. Draw it anyway. A line you chose and can defend beats a borrowed American figure you never believed, and it buys the one thing more money kept failing to hand over: the right to stop asking the question.