How Much Do I Need to Retire? A Method, Not a Magic Number
There is no single number everyone needs to retire, and any page that gives you one without asking what you spend is guessing. What there is instead is a short method that works for almost anyone: estimate what you will spend each year in retirement, subtract the income Social Security and any pension will provide, and multiply the remaining gap by 25 to 33. The federal data give useful anchors along the way. Households aged 65 to 74 spend $65,354 a year on average, about 77% of what households aged 55 to 64 spend, per the Bureau of Labor Statistics. The average retired-worker Social Security benefit is $2,087.52 a month (SSA, August 2026). This page works through each step.
Free tools & guides: FIRE Calculator · Retirement Withdrawal Calculator · Average retirement savings by age · Average Social Security check
The Short Answer
- The formula: (annual retirement spending − Social Security − pensions) × 25 is the savings target at a 4% withdrawal rate. Use × 33 for a more cautious 3%.
- Spending falls, but not by half. BLS data show households 65-74 spending 77% of what households 55-64 spend, and those 75 and over about 66%.
- Social Security replaces about 40% of career-average earnings for a medium earner retiring at 67 in 2026, and less for higher earners, per the 2026 Social Security Trustees Report.
- Plan for a long retirement. A 65-year-old in 2025 can expect to live another 19.1 years (men) or 21.7 years (women) on average, and many will live much longer.
- Build in the trust fund risk. The Trustees project the retirement trust fund to run out in late 2032, after which incoming taxes would cover 78% of scheduled benefits unless Congress acts.
Step 1: Estimate Your Retirement Spending
Everything else follows from this number, so it is worth doing carefully. The best starting point is what you spend now, not what you earn: your current spending minus what disappears at retirement (saving for retirement itself, payroll taxes, commuting, possibly a mortgage) plus what tends to rise (healthcare, and travel in the early years).
The Consumer Expenditure Survey shows how spending actually changes with age:
| Age of reference person | Average annual spending | Compared with 55-64 | Of which healthcare |
|---|---|---|---|
| 45-54 | $100,327 | 118% | $6,748 |
| 55-64 | $84,946 | 100% | $6,711 |
| 65-74 | $65,354 | 77% | $7,715 |
| 75 and older | $55,834 | 66% | $7,918 |
| All 65 and older | $61,432 | 72% | $7,799 |
Two things stand out. Spending in the 65-74 bracket is about three-quarters of the 55-64 level, which is where the common "plan on 70% to 80% of pre-retirement income" rule of thumb comes from. And healthcare is the one major category that goes up: households 75 and over spend more on it than any younger group. Our average monthly expenses page breaks the categories down further, and the healthcare in retirement guide covers Medicare costs.
Step 2: Subtract Social Security and Pensions
Your savings only have to cover what guaranteed income does not. For most people the biggest piece is Social Security, and your own estimate is on your my Social Security statement at ssa.gov. For context:
| Benefit (SSA, August 2026) | Average monthly | Per year |
|---|---|---|
| Retired workers | $2,087.52 | $25,050 |
| Spouses of retired workers | $986.70 | $11,840 |
| Nondisabled widow(er)s | $1,934.37 | $23,212 |
How much of your earnings Social Security replaces depends heavily on how much you earned, because the benefit formula is weighted toward lower earners. The Trustees' illustrations for workers reaching 65 in 2026 and claiming at the normal retirement age of 67:
| Career earnings level | Career-average earnings (2026) | Annual benefit at 67 | Share of career-average earnings |
|---|---|---|---|
| Very low (25% of average wage) | $18,812 | $13,855 | 74.3% |
| Low (45%) | $33,861 | $18,153 | 54.1% |
| Medium (about the average wage) | $75,247 | $30,003 | 40.2% |
| High (160%) | $120,395 | $39,594 | 33.2% |
| Steady maximum | At the $184,500 wage cap | $48,614 | 26.4% |
The higher your income, the more of your retirement your own savings have to fund. When to claim matters too: our average Social Security check guide shows how much claiming at 62 or 70 changes the monthly amount.
Step 3: Multiply the Gap
Whatever spending guaranteed income does not cover has to come from savings, every year, for the rest of your life. The simplest way to size that pot is to pick a withdrawal rate: the share of the starting balance you take out in the first year, then adjust for inflation.
| Withdrawal rate | Multiply the annual gap by | Character |
|---|---|---|
| 3% | 33 | Cautious; suits a long retirement or an early start |
| 4% | 25 | The widely quoted rule of thumb for a roughly 30-year retirement |
| 5% | 20 | Aggressive; higher risk of running short |
The 4% rule is a planning convention, not a law of nature. It assumes a diversified portfolio of stocks and bonds, a retirement of about 30 years, and inflation-adjusted withdrawals. Retire earlier, hold mostly cash, or retire into a poor market, and a lower rate is safer. Our retirement withdrawal calculator lets you test different rates and returns.
Worked Example
Hypothetical illustration, using the federal averages above. A couple aged 65 expects to spend the BLS average for their age group and to receive the average retired-worker benefit plus the average spouse benefit, with no pension.
| Per year | |
|---|---|
| Spending (BLS average, age 65-74) | $65,354 |
| Less Social Security (average retired worker + average spouse) | −$36,891 |
| Gap to fund from savings | $28,463 |
- At 4% (× 25): about $712,000
- At 3% (× 33): about $949,000
- At 5% (× 20): about $569,000
The point is not the specific answer, since your spending and benefits will differ, but the shape: every $1,000 a year of spending you can cut, or of guaranteed income you can add by delaying Social Security, lowers the target by about $25,000 at a 4% rate. To see how that compares with what people actually have, see average retirement savings by age.
How Long the Money Must Last
The 2026 Trustees Report puts cohort life expectancy at 65, for people reaching that age in 2025, at 19.1 years for men and 21.7 years for women under its intermediate assumptions. Those are averages: roughly half will live longer, and for a couple, the chance that at least one partner reaches their 90s is considerably higher than for either one alone.
That is why planners tend to use a horizon of 30 years for a 65-year-old rather than the average. The risk of outliving your money is the costly one; dying with some left over is not.
The Social Security Shortfall
The 2026 Trustees Report projects that the Old-Age and Survivors Insurance trust fund, which pays retirement benefits, will be depleted in the fourth quarter of 2032. At that point, "projected income is sufficient to pay 78 percent of scheduled benefits," falling to 62% by 2100. The combined retirement and disability funds would last until 2034, with 83% payable.
Congress has changed the program before, and most proposals to close the gap involve some mix of tax increases and benefit changes. But nothing in current law prevents the automatic reduction. A cautious plan tests what happens if benefits are cut by about a fifth from the early 2030s. In the worked example above, a 22% cut to $36,891 of benefits would widen the gap by about $8,100 a year, adding roughly $200,000 to the target at a 4% rate.
What the Rule of Thumb Leaves Out
- Taxes. Withdrawals from traditional 401(k)s and IRAs are taxed as income, and IRS Publication 915 says "up to 85% of your benefits can be taxable" above certain income levels. Size the target on after-tax needs, or add a margin. Roth money is not taxed on qualified withdrawals.
- Long-term care. HHS research estimates that 70% of adults who reach 65 develop severe care needs, and Medicare does not pay for long-term custodial care. See long-term care insurance.
- Lumpy costs. A new roof, a car, help for adult children. Averages smooth these out; your budget will not.
- Early retirement. Retire at 55 and your money must last longer and bridge the years before Social Security and Medicare, so a 3% rate or lower is usually more realistic. The FIRE calculator is built for this case.
- Your home. Paying off a mortgage before retiring lowers the spending you need to fund, and home equity is a reserve many people never count.
Sources & Methodology
- BLS Consumer Expenditure Surveys, Table 1300, Age of reference person, 2024, for spending by age.
- SSA Monthly Statistical Snapshot, August 2026, for average benefits.
- 2026 Social Security Trustees Report, for Table V.C7 (illustrative benefits and replacement rates), Table V.A5 (cohort life expectancy) and the trust fund projections.
- IRS Publication 915, for the rule that up to 85% of benefits can be taxable.
The worked example and multipliers are our own arithmetic. The 4% withdrawal rate is a planning convention from historical return studies, cited here as a rule of thumb rather than a primary-source figure. All illustrations are hypothetical.
FAQ
How much money do I need to retire?
Take your expected annual retirement spending, subtract Social Security and any pension, and multiply what is left by 25 (for a 4% withdrawal rate) or 33 (for 3%). There is no universal figure because spending varies so much.
What is the 4% rule?
A rule of thumb that you can withdraw 4% of your savings in the first year of retirement and raise the amount with inflation afterwards, with a good chance the money lasts about 30 years. It is based on historical returns, not a guarantee.
How much of my income will I need in retirement?
BLS data show households aged 65-74 spending about 77% of what households aged 55-64 spend, which is in line with the common 70% to 80% guideline. Your own spending is a better guide than your income.
How much does Social Security replace?
About 40% of career-average earnings for a medium earner claiming at 67 in 2026, per the Trustees. It replaces more for lower earners (54% to 74%) and less for higher earners (26% to 33%).
Is $1 million enough to retire?
At a 4% withdrawal rate, $1 million supports about $40,000 a year from savings on top of Social Security. Whether that is enough depends on what you spend: in our worked example, an average-spending couple with average benefits needs about $712,000.
Will Social Security run out?
Not entirely. The Trustees project the retirement trust fund to be depleted in late 2032, after which ongoing payroll taxes would cover about 78% of scheduled benefits unless the law changes.
This article is for general information and is not financial advice. Figures are from the BLS Consumer Expenditure Surveys, the SSA and the 2026 Social Security Trustees Report, checked against the primary sources on 2026-09-30. All examples are hypothetical; consider a fee-only financial planner for a personal retirement plan.
Writes practical, plain-English money guides. Educational content only, not individual financial advice.

