Overview
A million dollars has long been the shorthand for retirement success. Get to a million and you are set - that was the conventional wisdom for a generation. The reality is more nuanced. A million dollars can absolutely support a comfortable retirement for most people. It can also run dry faster than expected if the spending level, market timing, and inflation assumptions do not cooperate.
The answer to "how long will $1 million last in retirement" is not a single number. It is a range of outcomes that depends on how much you spend each month, what markets do in the first decade of your retirement, how much Social Security supplements the portfolio, and whether your spending stays fixed or adjusts with conditions.
This page works through each of those factors with real numbers.
The basic math: spending rate and portfolio longevity
The simplest version of the answer comes from applying a fixed spending rate to a $1 million portfolio and assuming an average annual return. Here is what different spending levels produce under a 6% nominal return assumption (with 3% inflation):
| Monthly Spending | Annual Draw | % of Portfolio | Approximate Years Portfolio Lasts | |---|---|---|---| | $2,500 | $30,000 | 3.0% | 40+ years | | $3,333 | $40,000 | 4.0% | ~30–35 years | | $4,167 | $50,000 | 5.0% | ~22–25 years | | $5,000 | $60,000 | 6.0% | ~18–20 years | | $6,667 | $80,000 | 8.0% | ~13–15 years |
These figures assume no Social Security or other income. In practice, most retirees do have Social Security, which dramatically improves every scenario.
The 4% row - $40,000 annually from a $1 million portfolio - is where the classic 4% rule applies. Based on historical data, a 4% initial withdrawal rate has supported a 30-year retirement in the large majority of historical periods. It is not guaranteed to work in all future scenarios, but it is the most widely validated benchmark available.
What Social Security does to the timeline
Social Security is the most important variable that most simple "$1 million" calculations leave out. For most retirees, Social Security is not a small supplement - it is a major component of retirement income.
The average Social Security benefit for retired workers in 2024 was approximately $1,900/month. For someone who earned above-average wages throughout their career and delays claiming until 70, benefits can reach $3,000–$4,000/month or more.
How does that change the $1 million picture?
If Social Security covers $2,000/month and your total spending budget is $5,000/month, you only need $3,000/month from your portfolio - a 3.6% annual withdrawal rate. That turns a "borderline sustainable" situation into a comfortable one.
If Social Security covers $3,000/month and your spending is $4,500/month, you need only $1,500/month from the portfolio - a 1.8% withdrawal rate. At that rate, a $1 million portfolio is almost certain to outlast a 30-year retirement and likely grow in real terms.
The key action item: know your estimated Social Security benefit. The Social Security Administration's online tools provide a personal estimate based on your actual earnings history. Including that number in any retirement projection is not optional - it fundamentally changes the math.
What sequence of returns does to the timeline
The average-return math above makes the calculation look tidy. Real markets are not tidy. The order in which returns arrive - the sequence of returns - has an enormous impact on how long a portfolio lasts when you are withdrawing from it.
Here is why: if markets drop 30–40% in your first three years of retirement and you continue withdrawing the same amount, you are selling more shares at depressed prices. When the market recovers, you have fewer shares left to benefit from the recovery. This can permanently impair the portfolio - even if the 20-year average return looks perfectly normal.
This effect is called sequence-of-returns risk, and it is the reason why the 4% rule is not a guarantee. Historical analysis shows that the same 30-year average return can produce wildly different outcomes depending on when the bad years cluster.
Two historical examples: - A retiree who started drawing $40,000/year from $1 million in January 2000 hit the dot-com crash immediately and then the 2008 crisis a few years later. This sequence was one of the most stressful in modern retirement history. - A retiree who started the same plan in January 2010 benefited from a long bull market in the early years, which built a buffer that made later volatility much more manageable.
The Retirement Calculator models outcomes across historical starting years so you can see the distribution - including the stressful sequences - rather than just the average.
Inflation erodes the value of fixed withdrawals
The 4% rule adjusts withdrawals for inflation each year. But let's make that concrete. If you start withdrawing $40,000/year at age 65 and inflation averages 3%, by age 80 you need to withdraw approximately $62,000/year to maintain the same purchasing power. By age 90, it's approximately $83,000/year.
A $1 million portfolio earning 6% nominally while paying $40,000 in year-one withdrawals and increasing that withdrawal by 3% each year faces meaningfully more pressure than a fixed-dollar withdrawal analysis suggests. Running a calculator that applies inflation-adjusted withdrawals gives you a more realistic picture of portfolio longevity than a flat spending assumption.
Strategies to extend how long $1 million lasts
**Delay Social Security to maximize the lifetime income floor.** A higher Social Security benefit acts like a longevity insurance annuity. The longer you live, the more valuable it is. For a couple where one partner has a high earnings history, delaying the higher earner's benefit to 70 is often the single highest-ROI retirement planning decision available.
**Use a flexible spending approach.** Rather than withdrawing a fixed inflation-adjusted amount every year, set a floor and ceiling. In strong market years, you can spend more. In down years, you cut discretionary spending to preserve principal. Research on flexible withdrawal strategies shows they significantly extend portfolio longevity compared to rigid approaches.
**Maintain a cash or short-term bond buffer.** Keeping one to two years of expenses in cash or stable assets means you do not need to sell equities during market downturns to fund current spending. This effectively gives the equity portion of the portfolio more time to recover.
**Consider a part-time income stream.** Earning even $10,000–$20,000/year through part-time consulting, freelancing, or a phased retirement reduces the annual portfolio withdrawal by the same amount. Over a 10-year period, this can add 5–10 years to how long the portfolio lasts.
**Plan for healthcare inflation separately.** Healthcare costs tend to rise faster than general inflation, particularly for retirees over 75. Maintaining a separate healthcare reserve - or ensuring your spending projections use healthcare-specific inflation rates - prevents healthcare costs from disrupting the overall retirement income plan.
Will $1 million be enough if you live to 90 or 95?
Longevity risk - the risk of outliving your money - is one of the central concerns in retirement planning. Life expectancy at 65 in the United States is approximately 84 for men and 86 for women on average. These are averages, which means a substantial portion of 65-year-olds live into their 90s.
For a 30-year retirement (65 to 95), the math becomes tighter. The 4% rule was validated for 30-year periods, so $40,000/year from $1 million is on the margin. With Social Security covering a significant portion of spending, most retirees are fine. Without substantial Social Security income, a 40-year spending horizon at 4% carries more risk than the historical data fully supports.
This is why some planners recommend that healthy 65-year-olds use 3.5% rather than 4% as their withdrawal rate baseline, giving the portfolio more room to handle longevity.