How Much Can I Withdraw in Retirement?

"How much can I withdraw?" is the most important question in retirement planning. Get it wrong in one direction and you run out of money. Get it wrong in the other and you live unnecessarily frugally, leaving hundreds of thousands of dollars unspent at death.

The math isn't complicated — but several variables change the answer significantly. This guide walks through the core formula, shows what different portfolio sizes actually support at various spending levels, explains why age matters enormously, and covers the inflation adjustment that most people underestimate.

The basic formula

The safe withdrawal rate (SWR) is the percentage of your initial portfolio you can withdraw in year one, then adjust for inflation annually, with a high probability of the portfolio surviving your full retirement. The most cited figure is 4% — derived from historical US market data over 30-year periods.

The key word is "initial." You withdraw 4% of your starting portfolio in year one. In year two, you withdraw the same dollar amount adjusted upward for inflation — regardless of what the portfolio did. You don't recalculate 4% of the new balance every year (that's a different strategy called dynamic withdrawal).

What different portfolio sizes actually support

Portfolio	At 3% SWR	At 3.5% SWR	At 4% SWR	At 4.5% SWR
$500,000	$15,000/yr	$17,500/yr	$20,000/yr	$22,500/yr
$750,000	$22,500/yr	$26,250/yr	$30,000/yr	$33,750/yr
$1,000,000	$30,000/yr	$35,000/yr	$40,000/yr	$45,000/yr
$1,500,000	$45,000/yr	$52,500/yr	$60,000/yr	$67,500/yr
$2,000,000	$60,000/yr	$70,000/yr	$80,000/yr	$90,000/yr
$3,000,000	$90,000/yr	$105,000/yr	$120,000/yr	$135,000/yr

The 4% column is what most planners use as the base case for a 30-year retirement (traditional retirement at 65). But which SWR is actually right for you depends heavily on your retirement age.

Why retirement age changes the answer dramatically

The 4% rule was designed and tested for 30-year retirements — someone retiring at 65 and planning to age 95. If you retire at 50, you need the portfolio to last 50 years. The historical research becomes less certain at that horizon, and the mathematically appropriate withdrawal rate is lower.

Retire at age	Years portfolio must last	Recommended SWR	$1.5M supports	$2M supports
40	55+ years	2.75%	$41,250/yr	$55,000/yr
45	50 years	3.0%	$45,000/yr	$60,000/yr
50	45 years	3.25%	$48,750/yr	$65,000/yr
55	40 years	3.5%	$52,500/yr	$70,000/yr
60	35 years	3.75%	$56,250/yr	$75,000/yr
65	30 years	4.0%	$60,000/yr	$80,000/yr

For a 45-year-old with $1.5M, a 3% SWR means $45,000/year — not $60,000. That gap — $15,000/year — is significant. It means either accumulating more ($2M at 3% = $60,000/year) or planning to supplement the portfolio with some earned income in early retirement.

The inflation adjustment — the number most people miss

The "safe" in safe withdrawal rate means your spending power is maintained through annual inflation adjustment. At 3% annual inflation, $60,000/year in 2026 costs $80,635 in 2036 and $108,367 in 2046. Your portfolio withdrawals need to keep pace.

In practical terms: if you withdraw $60,000 in year one, you withdraw $61,800 in year two (at 3% inflation), $63,654 in year three, and so on. The real purchasing power stays constant — $60,000 in 2026 dollars — but the nominal dollar amount grows.

This is why the "4% rule" is slightly misleading as stated. More precisely: withdraw 4% of your initial portfolio in year one, then increase that dollar amount by the actual inflation rate each subsequent year. The 4% is only ever applied once, to the starting balance.

Real examples at different spending levels

The $40,000/year retiree

At $40,000/year spending, you need $1,000,000 at 4% (traditional) or $1,333,000 at 3% (early retirement at 45). This is achievable for someone with low housing costs — owned outright, low-cost area, or geographic arbitrage to a LCOL country. Social Security at 67–70 would eventually reduce portfolio pressure significantly.

The $60,000/year retiree

The most common FIRE planning scenario. At 4%, this requires $1,500,000. At 3% (retiring at 45), it requires $2,000,000. Healthcare adds $12,000–$20,000 to this figure for pre-Medicare years, effectively making the realistic FIRE number $1,800,000–$2,300,000 for someone retiring in their late 40s.

The $80,000/year retiree

$2,000,000 at 4% or $2,667,000 at 3%. This is the entry point for "chubby FIRE" — comfortable, flexible, with real room for travel, experiences, and unexpected costs. A couple where both worked high-earning careers for 15–20 years can often reach this level by their early 50s.

What if the math doesn't work at your target number?

If your portfolio supports $45,000/year but you need $60,000, you have four levers:

• Reduce spending. Eliminate the gap by spending less. Often achievable through housing decisions (relocate, downsize, geographic arbitrage).
• Earn supplemental income. Even $12,000–$15,000/year from part-time work or freelancing closes a $15,000 spending gap completely.
• Save more. Each additional year of work closes the gap faster than it appears — you're both accumulating and allowing existing assets to compound.
• Use dynamic withdrawal. A guardrails or dynamic withdrawal strategy can support higher initial spending ($55,000–$65,000 on a $1.5M portfolio) in exchange for flexibility to cut in bad markets.