Your FIRE Number Is Copied. Price It in Working Years

Say your FIRE number out loud. Now defend every line inside it without citing a blogger, a forum thread, or a cousin who retired at 38. The arithmetic defends itself in seconds: 25 times annual spending, drawn down at a 4 percent safe withdrawal rate. Ask instead where the spending figure came from, why the target is a round million, or why the cash buffer sits at two years of expenses, and the answers get quiet. That quiet is the subject of this piece.

If you keep wondering whether your FIRE number is too high, the question has no answer until you can say which parts of it are yours. The claim worth testing: a FIRE number is less an arithmetic output than an inheritance from other people's wants. Round milestones, stacked safety margins, and lean or fat lifestyle lines arrive through imitation before any spreadsheet runs. Mimetic desire names the mechanism. A five-question audit supplies the diagnostic. And one conversion engine prices every borrowed line in the only currency that matters, which is months of your working life.

Where Your FIRE Number Actually Comes From

The financial independence retire early movement popularized a beautifully compact formula: estimate the annual spending of your future self, multiply by 25, and there is your target. The formula is fine. The inputs are the problem, because your future self does not exist yet, and forecasts of a person you have not become are borrowed from whatever models happen to be visible. People rarely benchmark against strangers they have never seen. They benchmark against the community surrounding them, meaning the blogs, forums, and subreddits that supply the reference points: a million dollars as the entry ticket, a 3 percent withdrawal rate as the cautious badge, six months of cash as the responsible baseline.

A typical FIRE number is therefore assembled from community norms as much as from personal expense data. Each norm is defensible in isolation. Glued together by imitation, they produce a target nobody explicitly chose. The tell is that your defense of each line keeps citing other people rather than your own history or scenarios.

What Mimetic Desire Is, Briefly

According to Girard's mimetic theory, people rarely desire objects directly. Desire is triangular: you notice an object, but a model, some specific person who wants it or already has it, teaches you that it is worth wanting. The model matters more than the object, and rivalry follows, because two people imitating each other's wanting end up competing for the same things.

Luke Burgis, author of Wanting and a guest on The Minimalists' "Social Contagion" episode, adds a filter you can actually use. Thick desires are durable and rooted in your real history, the things you return to across years. Thin desires are borrowed from models, and they evaporate when the model changes or the audience disappears. That episode runs the idea through clutter: why people keep things "just in case," why sentimental items weigh so much, and why we sometimes feel obligated to want what the people before us valued. Money runs on the same code. The unlabeled margin line in a portfolio is the financial equivalent of the box of old cables, kept for a someday that never gets named. This is where mimetic desire and money meet, and FIRE culture is their most legible laboratory.

The Status Games Inside FIRE Culture

Most money subcultures hide their desires. FIRE culture publishes them, quantified. Savings rates, portfolio milestones, and lean versus fat labels make wanting public and instantly comparable, and comparison is mimetic desire's native habitat. The path to financial independence becomes a status game with a leaderboard. Four games matter for your target.

Savings-rate one-upmanship

Mr. Money Mustache's shockingly simple math compressed the entire project into one number: your savings rate determines your years to freedom. The math is elegant and true. The mimetic risk is that the savings rate stops being a dial you set and becomes a score you chase, so a 30 percent saver starts compressing spending below what their thick desires actually need in order to outrank strangers. Frugality performed for an audience is still performance.

Lean pride and fat aspiration

The lean FIRE vs. fat FIRE split is really two prestige ladders leaning on the same wall. Lean awards status for smallness, where the tiny number is a moral achievement and restraint is the medal. Fat awards status for magnitude, where the lifestyle borrowed from a travel-blogging couple becomes ambient aspiration. Neither ladder is wrong; both are models, and the audit question is not which one is correct but which line items you adopted in order to belong to one of them.

The just-in-case buffer, portfolio edition

One maxim from that Minimalists episode applies directly:

"Someday" is clutter's favorite day of the week.

The just-in-case buffer behaves exactly like the sentimental item in a closet. It grows with every market scare. It is almost never stress-tested against a named scenario. Because no scenario is ever named, no amount ever satisfies, so it compounds quietly and never shrinks. Their companion line, that we do not grieve the object but what it represents, explains the attachment: the buffer represents a prepared self, and shrinking it feels like losing that identity rather than doing arithmetic.

One-more-year drift

You reach the number. A withdrawal-rate debate flares on the forum. You work another year, for safety, and the comfort never registers, because the cautious elder you model still has more. One more year syndrome is mimetic desire after the finish line: the goalpost moves because the models kept walking.

The Five-Question Desire Audit

The fastest way to audit your FIRE number is to stop treating it as one number and treat it as line items: every margin, every milestone, every lifestyle line. Then put each line through five questions, one per decision point.

1. Name the model. Who specifically wanted this before you did? A named person is workable. "The forum" is also an answer, and a revealing one, because diffuse consensus is where imitation hides best.
2. Did the line predate the community? Old budgets and bank statements are evidence. A want that appeared after you joined is imported until proven otherwise.
3. Apply the privacy test. If you could never mention this line or its milestone to anyone, ever, would it still matter? Thin desires fail this test, because part of what they buy is being seen wanting them. Thick desires survive it.
4. Stress-test against a named scenario. Not "a crash." A specific event: a 30 percent drawdown plus 18 months of unemployment at age 47. A line that survives a named scenario has earned its price. Unnamed dread cannot be satisfied at any price, which is exactly why it compounds.
5. Thick or thin? Does the want persist across years and show up in what you already do? Or does it exist mainly as an identity you would like to perform at some future date?

Each line comes out with one of three verdicts: keep it, cut it, or renegotiate it, meaning keep a cheaper version that still answers the same want. The audit takes minutes once your lines are written down. Its output, and this is the part people miss, is an audited number, not automatically a smaller one.

Pricing Copied Desire in Working Years

Now the engine. At a 4 percent safe withdrawal rate, every $4,000 of annual spending you add requires $100,000 more target under the 25x rule. At $5,000 of monthly savings, that extra $100,000 costs roughly 20 months of work before counting investment returns. Compounding trims the bill: at the long-run averages savings plans commonly assume, the same $100,000 often lands closer to 19 months. The engine's job is scale, not precision, and it deliberately ignores taxes and sequence risk.

extra working months = extra target dollars / monthly savings

So the question of how many working years each $100,000 of added target costs has a short answer: it depends only on your monthly savings.

Monthly savings	Months of work per extra $100,000 of target
$2,500	40
$5,000	20
$7,500	about 13
$10,000	10

All figures ignore returns, which typically trim a few months, and more of them at lower savings rates. To sanity-check the base target itself, a standard FIRE calculator will happily run the 25x multiplication. It cannot tell you which inputs are yours. That part is the audit's job.

Five FIRE Targets Audited and Priced

Five composite examples below, each priced at $5,000 of monthly savings, so 20 months per $100,000. The verdicts illustrate the questions in action; they are not universal prescriptions.

Target line	The borrowed part	Audit verdict	Extra target	Work cost
Round $1,000,000 milestone	Audited expenses imply $900,000; the roundness adds the rest	Cut, unless round simplicity passes a named-scenario test	$100,000	20 months
3% withdrawal margin on $40,000 of spending	Swaps 25x ($1.0M) for 33x ($1.33M) while a cash buffer also sits on top	Renegotiate; a lower rate is defensible for 40-plus-year horizons, but stacking it on a buffer double-counts fear	about $333,000	about 67 months
Fat-FI travel line at $8,000 a year	Actual travel spending is $3,000; the gap is aspirational identity	Renegotiate to the audited amount and revisit annually	$125,000	25 months
Paid-off house checkbox	$150,000 early payoff of a low fixed-rate mortgage	Keep only if a named scenario, like carrying debt through job loss, genuinely frightens you	$150,000	30 months
Doubled just-in-case buffer	Grew from $30,000 to $90,000 with no scenario ever named	Cut back to the scenario-priced size	$60,000	12 months

Read the last column as one person's story, because these lines do travel together. A saver carrying all five has borrowed roughly 154 months, nearly 13 years of working life, before touching a single expense they actually chose.

Rebuilding an Audited FIRE Number

Keep means the line survived all five questions, so fund it without apology. Cut means it failed the privacy test and the pre-community test at once, so delete it and bank the months. Renegotiate is the most common verdict: the want is real but the priced version is borrowed, so keep a cheaper version, the audited travel budget instead of the aspirational one.

Two warnings before you rebuild. First, small-number pride is mimetic too. Lean asceticism copies a different leaderboard, and a target compressed to win a frugality contest fails the same audit. Second, the audit can raise your target. Someone who imported lean norms wholesale may discover genuine under-targeting in health costs, support for aging parents, or the travel they already do every year. When a surviving line points upward, check the raise once against the psychology of lifestyle creep, so a thick want is not quietly carrying a thin one.

Then re-run the audit annually. Models change as you climb: early on you imitate colleagues, later you imitate retired bloggers, and the newly idle imitate each other's restlessness. An audited number is a maintenance artifact, not a trophy.

This piece opened three questions: where the number came from, how to test each line, and what the borrowed ones cost. You now have all three answers as a recitation you can perform without citing anyone. A FIRE number you can defend line by line is the only kind that was ever yours.