When Can I Retire? The Date Is a Projection, Not an Age
There's no birthday that makes you retired. Your retirement date is the first month a projection shows your portfolio plus Social Security covering your expenses for the rest of your life — even when the early markets go badly. The legal ages (62, 65, 67) just gate access, not readiness.
- The answer: the date is where your portfolio, plus Social Security, funds your expenses every month until you die. Your savings, your spending, your returns, when you claim Social Security and how long you live all move that date.
- The shorthand: the 4% guideline implies a target of roughly 25× your annual expenses. Useful as a sanity check — but it ignores Social Security, taxes, healthcare, inflation, and the order your returns arrive in.
- The recommendation: use 25× to get in the ballpark, then run a month-by-month projection that survives to age 95 in a bad-luck market. That month — not your 65th birthday — is your retirement date.
Where the AI summary above gets this wrong
"You can retire once you have 25× your annual expenses saved — roughly $1 million for most households."
That's a decent starting estimate. Here's what it misses:
- It ignores Social Security — Social Security replaces part of your spending, so the number you need from savings is smaller. A household expecting $30,000 a year from Social Security needs to fund only the gap, not the whole $80,000.
- It ignores sequence-of-returns risk — a 25× portfolio that meets a bad market in its first five years can run dry decades early. The average return isn't what bites you; the order is.
- The right answer is a projection, not a multiple — your real retirement is 30+ years of changing expenses, taxes, RMDs, and Social Security starting mid-stream. A single multiple can't tell you the month it's safe to stop.
My wife Maya turned 48 this year; I'm 51. We live in Austin, and like everyone our age we'd both circled a vague "maybe 60?" in our heads and left it there. So last winter I stopped guessing and ran us through the same engine I built for clients. The question I actually answered wasn't "what age?" — it was "what's the first month our money lasts to 95 even if the market tanks the year I quit?" Here's the analysis, starting with why the age framing is the wrong one.
01 Why "when" is a projection, not an age
The retirement date is a projection, not an age, and treating it as an age is what makes the question feel unanswerable.
Your retirement date is the first month your projected portfolio plus guaranteed income covers your spending for the rest of your life — that's the whole definition. The famous ages are access rules, not readiness signals: penalty-free retirement-account withdrawals generally start at 59½, the earliest reduced Social Security claim is 62, Medicare begins at 65, and full Social Security (your "full retirement age") is 67 for anyone born in 1960 or later.
None of those is your date. Two 60-year-olds with identical $1.2M portfolios can have retirement dates years apart, because one spends $40,000 a year and the other spends $90,000. The date falls out of the math between your savings, your spending, and how long the money has to last — which is why it has to be projected, not looked up.
The rule-of-thumb version — 25 times your annual spending — is useful for knowing whether you are roughly in range. It is not useful for naming a date, because it assumes a level withdrawal, a thirty-year horizon, and no Social Security, and none of those is true for a real person.
What actually determines the date is the interaction of several moving parts: your spending by phase, which is rarely flat; Social Security switching on at whatever age you claim; taxes and required minimum distributions landing in specific years; and the sequence of returns you happen to get in the first few years.
Those interactions can move the answer by years in either direction. Someone who claims Social Security at 70 rather than 62 needs a materially different portfolio, and the difference is not intuitive from the multiple alone.
Which is why the honest answer to "when can I retire" is produced by projecting month by month to 95 rather than by dividing a number. Use the multiple to know you are in the right region; use the projection to name the month.
02 The 25× shorthand and where it breaks
The 25× rule says you can retire once your portfolio reaches about 25 times your annual expenses, which is just the 4% guideline turned inside out (withdraw 4% a year, and 1 ÷ 0.04 = 25). It comes from the 1998 "Trinity study," which tested whether historical portfolios survived 30 years at various withdrawal rates. It's a genuinely useful first estimate.
Where it breaks is everything it leaves out. It treats your spending as flat for 30 years (it isn't), assumes no Social Security (most people get some), ignores taxes and RMDs on pre-tax accounts, and — most dangerously — uses an average outcome to describe a future where the order of returns decides whether you make it. The Trinity study itself reported failures at higher withdrawal rates; "25×" quietly rounds those off.
Use 25× as a floor-check, not a finish line. If you're nowhere near 25× expenses, you're not retiring soon and no projection will rescue that. If you're near it, the projection is what tells you whether "near" is actually safe.
Source: Cooley, Hubbard & Walz (1998), "Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable," AAII Journal
03 Worked example: your 25× target
Start with the simplest version of the question: at 25× expenses, what portfolio would you need, and where are you against it today? Maya and I plug in our roughly $90,000 of planned annual spending and our current $1.35M across 401(k)s, IRAs, and brokerage. Change the two numbers below to see your own 25× target and the gap to it.
Shows: the 25×-expenses target snapshot — the portfolio the 4% guideline implies, and how close your current savings are. Ignores: Social Security, taxes, sequence-of-returns risk, inflation, healthcare, and the full month-by-month projection.
At $90,000 of spending, the savings-only 25× target is $2.25M, and our $1.35M covers 60% of it. That looks discouraging until chapter 4: Social Security shrinks the number we actually need from savings, which is exactly why a single multiple can't answer "when."
On the defaults above, the worked example returns $2,250,000. You are at 60% of a savings-only 25x target. Social Security will lower the bar, but a projection decides the actual date.
04 Where Social Security and Medicare change the date
Social Security moves your date forward by covering part of your spending, so your savings only have to fund the gap. If Maya and I need $90,000 and expect roughly $40,000 combined from Social Security, our savings target drops from a 25× of $2.25M to a 25× on the $50,000 gap — about $1.25M, which our $1.35M already clears. The catch is when it starts: claim at 62 and the benefit is permanently reduced (about 30% below your full amount for those with an FRA of 67); wait to 70 and it grows.
Medicare is the other hinge. It starts at 65, so retiring earlier means bridging the health-insurance gap yourself — often the single biggest line item that pushes an early date later. The table shows how the same household's picture shifts across three common dates.
| Retire at | Savings needed (gap × 25) | Social Security impact | Medicare gap to cover |
|---|---|---|---|
| 60 | Highest — no SS yet, full spend on savings for years | None until 62+; claiming at 62 cuts the benefit ~30% | 5 years of private coverage before 65 |
| 65 | Lower — fewer self-funded years, SS can start at 62–65 | Reduced if claimed before FRA of 67 | 0 — Medicare begins |
| 67 | Lowest of the three — full SS, fewest drawdown years | Full (unreduced) benefit at FRA 67 | 0 — already on Medicare |
Source: SSA — Retirement benefits · Medicare.gov — Get started with Medicare
05 Sequence risk in the first five years
The first five years of retirement carry more weight than any average return, because you're selling assets to live on while prices may be down — and shares sold cheap never recover. Two retirees with the identical long-run average can land in completely different places: the one who hits a bad market early draws down a shrinking pile, locking in losses; the one whose bad years come later has already let the early gains compound.
This is the gap the 25× multiple can't see. A portfolio that's exactly 25× expenses has, historically, sometimes failed — not because the math was wrong on average, but because a 2000-style or 2008-style start drained it before recovery. It's why my own date isn't "the month I hit the number"; it's the month the projection still survives to 95 when I deliberately feed it a rough first five years.
Stress-test the start, not just the average. Before you commit to a date, run the plan with poor returns in years one through five. If it survives that, the date is real; if it only survives the average case, you've planned for the easy world.
Source: Cooley, Hubbard & Walz (1998), "Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable," AAII Journal
06 From a number to a plan
Turn the question from "what's my number?" into "what's my month?" by building a projection that runs from today to age 95: your accounts growing and being drawn down, your spending changing by phase, Social Security switching on at your chosen claim age, taxes and RMDs landing where they land, and Medicare starting at 65. The retirement date is simply the earliest start month where that projection never runs out — including under a bad-luck market.
For Maya and me, the rule-of-thumb answer ("$2.25M, so not yet") and the projected answer ("with Social Security at 67 and a stress-tested start, the math works at 61") were years apart. That gap is the whole reason to model it. Use 25× to know you're in range; use the projection to name the month.
07 What actually moves the date
Four levers change the answer, and they are not equally powerful.
| Lever | Effect on the date | Why |
|---|---|---|
| Spending less | Largest | Every $10,000 a year removed is roughly $250,000 less capital required |
| Working two more years | Large | Adds contributions and removes years of drawdown simultaneously |
| Delaying Social Security | Moderate but durable | Raises guaranteed, inflation-adjusted income for life |
| Higher expected returns | Smallest and least reliable | You do not control it, and assuming it is how plans fail |
The order matters. The first three are decisions; the fourth is a hope, and it is the one most plans lean on hardest.
Source: Consumer Financial Protection Bureau — Planning for retirement
My own date stopped being an age the day I ran the bad-luck markets. A retirement date isn't a number you hit — it's the first month the projection still survives to 95 when the first five years go wrong. The 25× rule and "$1 million" are fine for knowing whether you're in the neighborhood, but they describe an average world, and you only get to live one path. So I'd model it, not rule-of-thumb it: feed your real spending, your real Social Security claim age, and a deliberately rough start into a month-by-month projection, and let it tell you the month. That month is your answer — and it's usually not the birthday you'd guessed.
FAQ
Is there a magic age I can retire at?
No. There are legal milestones — 59½ for penalty-free retirement-account withdrawals, 62 for the earliest reduced Social Security, 65 for Medicare, 67 for full Social Security if you were born in 1960 or later — but none of those is your retirement date. Your date is the first month a projection shows your portfolio plus Social Security covering your expenses for the rest of your life.
How much do I need to retire?
A common shorthand is about 25 times your annual expenses, which comes from the 4% guideline. It's a useful target, not a guarantee: it ignores Social Security (which lowers the number you need from savings), taxes, healthcare, inflation, and the order in which your returns arrive. Treat 25× as a starting estimate, then run a month-by-month projection.
Does Social Security change the number I need saved?
Yes, often substantially. Social Security replaces part of your spending, so you only need savings to cover the gap. A household needing $80,000 a year that expects $30,000 from Social Security needs savings to cover roughly $50,000 — a 25× target of about $1.25M instead of $2M.
What is sequence-of-returns risk?
It's the risk that poor market returns in the first few years of retirement do lasting damage, because you're selling assets to live on while prices are down. Two retirees with the same average return can end up very differently depending on whether the bad years came early or late. It's why the first five years matter more than the average.
Can I retire before 59½?
Yes, but access to tax-advantaged money is restricted. Withdrawals from 401(k)s and IRAs before 59½ generally face a 10% penalty, with exceptions including the Rule of 55 for the 401(k) of the employer you leave at age 55 or older, and 72(t) substantially equal periodic payments. Taxable brokerage accounts have no age restriction.
Why not just use the 4% rule and be done?
The 4% guideline is a single multiple applied to one moment in time. Your actual retirement spans 30 or more years with changing expenses, Social Security starting mid-stream, taxes, RMDs, and market luck. A multiple is a sanity check; the answer to when you can retire is a projection that survives to age 95 even when the early years go badly.
Sources
Regulator references
- SSA — Retirement benefits reduction by age · Social Security Administration · 2025 · full retirement age 67 for those born 1960+, early-claim reductionsHow claiming before full retirement age reduces the benefit, month by month.Last verified: 2026-06-21
- SSA — Retirement benefits planner · Social Security Administration · 2025 · claiming ages 62–70 and benefit amountsThe SSA's overview of retirement benefits: eligibility, claiming ages and how to apply.Last verified: 2026-06-21
- IRS Topic No. 558 — Additional tax on early distributions · Internal Revenue Service · 2025 · 10% penalty before 59½, Rule of 55 and 72(t) exceptionsTax Topic 558: the additional tax on early distributions from retirement plans.Last verified: 2026-06-21
- Medicare.gov — Get started with Medicare · Centers for Medicare & Medicaid Services · 2025 · Medicare eligibility at 65The parts of Medicare, the enrolment windows, and the penalty for enrolling late.Last verified: 2026-06-21
Research
- Bengen, W. P. (1994), "Determining Withdrawal Rates Using Historical Data" · Journal of Financial Planning 7(4): 171-180origin of the 4% rule and the SafeMax conceptLast verified: 2026-09-07
- Cooley, Hubbard & Walz (1998), "Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable," AAII JournalThe "Trinity study" behind the 4%/25× guideline.Last verified: 2026-06-21
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-06-21 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.