Can I retire at 55 with $1.5 million as a single person?

At 55, a single person with $1.5 million has 12 years before a full Social Security check at 67, and that bridge is why the classic 4% rule overstates the safe budget here, as the comparison below shows. The useful question is which lever (spending, claim age or stock mix) you'd most want to flex if your number doesn't fit.

What 10,000 simulated retirements say

Your odds of lasting to 95 at each all-in monthly budget, in today's dollars. See how we ran these numbers.

The 4% rule versus the simulation

The 4% rule says $1.5 million supports $5,000 a month from the portfolio. Add the $2,071 monthly Social Security we assume for you and the budget comes to $7,070. But benefits don't start until 67, so for the first 12 years the portfolio pays the whole $7,070 on its own. Simulated, that budget lasts to 95 in 61% of futures. That's short of the 90% many planners aim for; the simulation puts the 90%-odds budget at $5,200, $1,870 a month lower.

How the money holds up over time

Spending $5,200 a month, the median simulated household still holds $2.39M at 85 (in today's dollars). In an unlucky future — the 10th percentile — it's down to $346K, and in a lucky one (90th percentile) it's $8.08M. Among the futures where the money lasts, the typical balance left at 95 is $3.77M — the cushion that a 90% target buys, more than the $1.5 million you started with.

Push spending to $6,300 a month and about 25% of simulated futures run dry before 95. When that happens, the median age the money runs out is 82, and the earliest tenth of those failures arrive by 73. By then Social Security is paying, so running short means living on benefits alone for what could be a decade or more.

What moves the odds

Holding spending at $5,200 a month and changing one thing at a time, nothing tested improves the odds by more than a point, so this budget is already close to its best setup. The biggest downside is a more conservative 30%-stock mix, which takes the odds to 80%.

Our read

Generous budget, long tail

$5,200 a month at 90% odds is a generous single-person budget, and the 4% rule's $7,070 is not far off, working in 61% of futures. Failures at the 75%-odds budget of $6,300 mostly arrive late, around 82, which is the hardest time to go back to work or cut deeply.

Late failures argue for protecting income in your 80s, not just the balance. Delaying Social Security to 70 does that (92%), and so can converting part of the portfolio into lifetime income later on. Long-term care is the other late-life cost this simulation leaves out; single retirees tend to pay more of it in cash.

The tax bill arrives in your mid-70s. With a median $1.87M at 75, an all-pre-tax balance would force a first RMD of about $76K, so the twenty years from now to then are the time to move money to Roth in measured steps. Stopping at 60 instead lifts the safe budget to $5,850.

One benefit, one plan

No spousal or survivor benefit backs this plan up: your $2,071 check is the only income that can't run out. From 67 it covers 40% of $5,200; savings carry the rest for life. There's no partner to share two other costs with, either: the Administration for Community Living estimates almost 70% of people turning 65 will need some long-term care, which this simulation doesn't model, and the single-filer IRMAA surcharge applies above $109,000 of MAGI, half the joint level.

Sources: ACL — how much care will you need?

Your timeline from age 55

1. 55

   Rule of 55

   Leave your employer in or after the year you turn 55 and that 401(k) is penalty-free now. IRAs wait until 59½, by which point this budget will have drawn about $281K.

   Source: irs.gov
2. 61

   2032: projected trust-fund depletion

   About 78% of scheduled benefits payable without action from Congress (2026 Trustees Report): $456 a month less. Odds at $5,200: 87%.

   Source: ssa.gov
3. 62

   Earliest Social Security claim

   $1,450 a month for life (70% of $2,071). It cuts the odds at $5,200 to 89%.

   Source: ssa.gov
4. 65

   Medicare

   10 years of individual coverage: COBRA for up to 18 months, then a marketplace plan whose subsidy depends on your income, not your savings.

   Source: healthcare.gov
5. 67

   Full retirement age (our assumption)

   $2,071 a month, 12 years after you stop working: 40% of $5,200.

   Source: ssa.gov
6. 70

   Maximum Social Security

   $2,568 a month (124%). Waiting raises the odds at $5,200 to 92%.

   Source: ssa.gov
7. 75

   Required minimum distributions

   Born 1971, so RMDs start at 75 under SECURE 2.0, on a median $1.87M. From 63 on, conversion income counts toward Medicare's IRMAA surcharge, which applies above $109,000 of single MAGI.

   Source: irs.gov

How we ran these numbers

• You, 55, retiring in 2026 with $1.5 million invested (home equity not counted) and no further contributions. Social Security of $2,071 a month at full retirement age, SSA's January 2026 average retired-worker benefit, claimed at 67 and indexed to inflation.
• 60/35/5 stocks, bonds and cash; spending flat in today's dollars, taxes and health insurance included; success means lasting to 95.

Benefit figures: SSA 2026 COLA fact sheet.

The methodology page documents every assumption and data source. Your own numbers will differ — run them below.