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Lookup 1 — Years to retire from your savings rate
The chart value, computed exactly from the formula — not snapped to the nearest row.
REFERENCE TABLE · MONEY · PRINTABLE
Savings Rate to Retirement Chart
The single most important chart in personal finance: your savings rate decides your retirement date more than your salary or your returns do. Save 10% and you work 51 years; save 50% and you work about 17; save 75% and you work 7. The chart below is computed from one formula at 5% real returns with the 4% rule — read your rate across, find your years, or skip the grid and use the live lookups. The underlying idea was popularized by Mr. Money Mustache’s 2011 post “The Shockingly Simple Math Behind Early Retirement” — the math here is recomputed from first principles and every word is our own. Both tables print cleanly.
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Lookup 2 — Savings rate needed for your timeline
Pick the number of working years you want — the math works backward to the rate.
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Lookup 3 — Your nest-egg number
The 25× rule: annual spending times 25 is the portfolio the 4% rule needs.
The chart
Read across from your savings rate to your working years. The formula behind every row: n = ln(1 + i(1−s)/(s·w)) / ln(1+i) with i = 5% real returns and w = 4% withdrawal rate. Printing? Use your browser’s print command — the tables below are formatted for paper.
| Savings rate | Years to retirement |
|---|---|
| 5% | 66 |
| 10% | 51 |
| 15% | 43 |
| 20% | 37 |
| 25% | 32 |
| 30% | 28 |
| 35% | 25 |
| 40% | 22 |
| 45% | 19 |
| 50% | 17 |
| 55% | 14.5 |
| 60% | 12.4 |
| 65% | 10.5 |
| 70% | 8.8 |
| 75% | 7 |
| 80% | 5.6 |
| 85% | 4 |
Worked example
$60,000 a year of spending needs a $1,500,000 portfolio under the 4% rule ($60,000 × 25). How fast do you get there? At a 50% savings rate, the formula gives 16.6 years — about 17 (check it in Lookup 1). Drop to 20% and it’s 37 years; push to 75% and it’s 7. The worked lesson: doubling your savings rate from 25% to 50% doesn’t halve your working life — it cuts it from 32 years to 17, because every extra point saved both grows the pile and shrinks the target.
Fidelity’s milestones: are you on track?
Fidelity’s rule of thumb for a traditional retirement at 67: have saved the multiples below of your salary by each age. It’s the checkpoint version of the chart above — same 4%-rule family, measured in salary multiples instead of savings rates.
| Age | Save this multiple of your salary |
|---|---|
| 30 | 1× |
| 40 | 3× |
| 50 | 6× |
| 60 | 8× |
| 67 | 10× |
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Years to retirement | ln(1 + i(1−s)/(s·w)) / ln(1+i) | 16.6 years at a 50% savings rate, 5% real, 4% rule. |
| Savings rate needed | the formula solved for s (bisection) | ~49.2% to retire in 17 years. |
| Nest-egg number | annual spending × 25 | $1,500,000 for $60,000/yr of spending. |
Who uses this
- FIRE planners: the chart that anchors every financial-independence plan — find your rate, circle your year.
- Career changers: testing whether a lower-paying but happier job still retires them on time (it’s the rate, not the salary).
- Young savers: seeing that 50% for 17 years beats 10% for 51 — motivation with a formula behind it.
- Researchers & students: the time-value math behind the chart is standard financial mathematics — cite it with the block below.
Accuracy & limitations
The chart assumes starting at $0, a constant savings rate, 5% real returns every year (no sequence-of-returns risk), and a 4% initial withdrawal rate adjusted for inflation thereafter. Real markets zigzag; the 4% rule is a planning guideline, not a guarantee, and taxes, fees, and Social Security are not modeled. Fidelity’s milestones assume retirement at 67 with a similar return family. The Mr. Money Mustache post that popularized this math is credited above; every word and computation here is original. Not financial advice.
Cite this calculatorBright Side Kit. “Retire Early: Savings Rate vs Years Chart.” brightoolbox.com, 2026.
Bright Side Kit. "Retire Early: Savings Rate vs Years Chart." https://brightoolbox.com/savings-rate-to-retirement-chart/ Accessed October 23, 2026.Frequently asked questions
Why does the savings rate matter more than the salary?
Because the rate controls both sides of the equation. Saving 50% instead of 25% grows your pile faster and means you need a smaller pile — you’re used to living on half your pay. Salary raises both the pile and the target; the rate only moves the pile. That’s why the chart doesn’t mention income at all.
What are the 4% rule and the 25× rule?
The 4% rule says a portfolio can sustain 4%-of-starting-value withdrawals, inflation-adjusted, for ~30 years — the Trinity-study planning guideline. The 25× rule is the same thing flipped: multiply your annual spending by 25 (1 / 0.04) to get the portfolio you need. $60,000 × 25 = $1,500,000. They’re one rule, two directions.
Why 5% real returns?
It’s the conservative long-run assumption behind this chart family: roughly 7% nominal stock returns minus ~2% inflation, with some bond drag mixed in. Push it to 7% real and every row shrinks; drop it to 3% and every row stretches. The shape — rate dominates, returns barely move the needle — survives any reasonable assumption.
I already have savings. Does the chart still apply?
It understates your speed — the chart starts at $0. Existing savings buy you a head start: a common adjustment is to subtract your current savings from the target and re-run the math on the remainder. The chart is the worst case; your reality is faster.
Is retiring in 7 years at a 75% savings rate realistic?
Mathematically, yes; practically, only if the lifestyle holds. The chart is exact given its assumptions — the hard part is living on 25% of your pay for seven straight years without lifestyle creep. Most people who hit these rates do it for a sprint (debt payoff, a sabbatical fund), not a lifetime.
What’s the difference between this and Fidelity’s milestones?
Same family, different ruler. The chart answers “how long?” from your savings rate at any age; Fidelity’s milestones answer “am I on track?” at fixed ages for a traditional age-67 retirement. Use the chart to pick your pace, the milestones to check your position.