How Much Money Do You Need to Retire? The 25x Rule

The retirement number people most want is also the least useful one when it is taken by itself: “How much money do I need?” A headline may say $1 million, $2 million, or 25 times your income. Those figures can be a useful way to start, but none is a personal answer until it is connected to the life the money must support.

The better question is: how much of your annual retirement spending will need to come from your investments? That is the gap a portfolio has to cover after Social Security, a pension, part-time work, rental income, and other dependable income. The widely used 25x rule turns that gap into a first savings target.

For example, a household that expects to spend $78,000 a year and receive $38,000 a year from Social Security has a $40,000 annual portfolio gap before considering taxes and other adjustments. Twenty-five times $40,000 is $1 million. That is not a prediction. It is a transparent starting scenario that can be improved as the household learns more.

The 25x rule in one sentence

The 25x rule says to multiply the annual amount you expect to withdraw from investments by 25.

Annual portfolio spending need × 25 = rough retirement portfolio target

It comes from the familiar 4% withdrawal guideline. A 4% first-year withdrawal is the same math as dividing a portfolio by 25:

$1,000,000 × 4% = $40,000
$40,000 × 25 = $1,000,000

The phrase “4% rule” can be misleading. It does not mean a retiree should take 4% of whatever the account happens to be worth every January. The classic approach starts with a percentage of the original portfolio in the first year and then raises that dollar amount with inflation. It also came from historical research with specific portfolios, time periods, and a roughly 30-year horizon. It was never a guarantee for every market, lifespan, tax situation, or family.

That limitation does not make the 25x rule useless. It makes it useful for the right job: estimating the size of the spending gap and comparing choices. A household can see the effect of reducing recurring expenses, delaying Social Security, retiring later, or keeping a small part-time income before trying to forecast every market return to the dollar.

Start with spending—not salary and not account balance

Salary is easy to find, which is why salary-based rules are popular. But retirement is paid for with spending. A person earning $150,000 may need less retirement income than a person earning $90,000 if the higher earner is saving heavily, supporting adult children, paying a large mortgage, or facing work expenses that will disappear after retiring.

Begin with a realistic annual spending estimate in today’s dollars. Include regular living costs and the expenses that are easy to forget:

• housing, property taxes, repairs, utilities, food, and transportation;
• health insurance, Medicare premiums, prescriptions, dental, vision, and out-of-pocket care;
• federal and state income taxes;
• travel, gifts, hobbies, helping family, and replacement vehicles;
• periodic costs such as roof repairs, home accessibility changes, or long-term-care planning;
• a reserve for surprises instead of assuming every year will be average.

Then identify dependable income. Social Security benefits can be estimated through a personal my Social Security account. A pension may have a monthly amount, cost-of-living adjustment policy, survivor election, and start date that all matter. Part-time income may be reliable for a few years but should not automatically be treated as permanent. Rental income, annuity payments, and business income need the same caution: use net income and think about how stable it really is.

Here is a simple first-pass worksheet.

The target is only as good as the spending number. If the $78,000 estimate excludes taxes and Medicare premiums, the portfolio target will be too low. If it includes a mortgage that will be gone before retirement, it may be too high. This is why a plain annual budget is more powerful than a glamorous retirement-number calculator.

What the 25x rule does and does not include

The rule is a way to translate an annual portfolio need into an opening balance. It does not decide the annual need for you.

This distinction matters because a person may have a $1 million balance and still have an uncertain plan. A 55-year-old who hopes to retire at 60, claims Social Security later, has no pension, and needs $55,000 from the portfolio may be asking that balance to do a different job than a 67-year-old with a pension and a $30,000 gap.

Why 25 times spending is not always the right multiplier

The multiplier should be linked to the time your money may need to last and the amount of uncertainty your plan can absorb. Smaller multipliers imply a higher starting withdrawal rate; larger multipliers imply a lower starting rate.

The “right” row is not simply the safest-looking one. A 3% target may be unnecessarily restrictive for a household with a pension, strong Social Security, flexible travel spending, and a willingness to work part-time if markets are poor. A 5% target may be uncomfortable for someone retiring in their late 50s with high fixed expenses and no other income until age 70.

The classic historical withdrawal research that popularized a roughly 4% starting rate studied past U.S. market data. FINRA likewise emphasizes that retirement withdrawal decisions are not one-size-fits-all. The practical lesson is not to find a magic percentage. It is to test how the plan behaves when the things you cannot control are less favorable than expected.

Five adjustments that often change the answer most

1. Retirement date and length

Every year you keep working can help in three ways: another year of contributions, one less year of withdrawals, and potentially a higher Social Security benefit. Retiring at 60 instead of 67 can require seven extra years of portfolio support before full retirement age benefits begin. It may also create a health-insurance bridge before Medicare at 65.

Conversely, working longer is not automatically the best answer. Health, job satisfaction, caregiving, and the kind of retirement you want matter. The point is to make the date visible in the math rather than treating age 65 or 67 as a default setting.

2. Social Security claiming age

Social Security can lower the amount investments need to provide for life, but claiming later may require the portfolio to provide more in the intervening years. The tradeoff is not “higher benefit is always better” or “claim as soon as possible.” It is a household cash-flow decision.

For a couple, the higher earner’s claiming decision can also affect the survivor benefit. Compare a few paths: both claim early, one claims at full retirement age, or the higher earner delays. Then observe how each path changes required portfolio withdrawals and the amount a surviving spouse may receive.

3. Taxes and account mix

The $40,000 a portfolio distributes is not automatically $40,000 available for spending. Traditional 401(k) and IRA withdrawals are generally taxable as ordinary income. Roth distributions may be qualified and tax-free if rules are met. Taxable brokerage withdrawals can include a mix of basis, gains, dividends, and interest.

That is why a retirement target should be expressed in spendable dollars, then tested against the taxes created by the withdrawal sources. A plan built entirely on pre-tax accounts often needs a different gross withdrawal amount than a plan with a meaningful Roth or taxable-account reserve.

4. Healthcare before and after Medicare

Medicare begins at 65 for most people, but healthcare does not become free at 65. Before Medicare, premiums and out-of-pocket expenses may be a large bridge cost. After Medicare, premiums, supplemental coverage, prescriptions, dental, vision, and possible income-related surcharges still belong in the budget.

Avoid putting one generic healthcare number into every future year. At minimum, separate the years before 65, the early Medicare years, and later-life contingency costs. If a spouse is younger, the household can have two different coverage timelines.

5. Fixed versus flexible spending

Not every dollar of spending carries the same risk. Housing, basic food, insurance, and essential health costs are difficult to cut quickly. Travel, gifts, restaurants, and some home projects may be more adjustable. A plan with room to reduce discretionary spending after a poor market can tolerate a different starting withdrawal than one with almost all spending fixed.

Labeling expenses as essential, important, and flexible is more useful than pretending the whole budget will rise at exactly the same inflation rate forever.

A worked example: one target, three versions of retirement

Consider Taylor and Morgan. They want $84,000 a year of household spending in today’s dollars. Their first Social Security estimate is $44,000 a year if both claim at planned ages. They have no pension.

Their simple 25x calculation is $40,000 × 25, or $1 million. But that is only the middle version of the plan.

None of the rows tells them what to do. The table tells them what decision has a large financial consequence. If a $300,000 difference depends on retiring three years earlier, that decision deserves more attention than changing a coffee budget or trying to predict next year’s market return.

Other methods worth using alongside 25x

The 80% income rule

Some planning conversations begin with “you will need 70% or 80% of your current income.” This can be a quick screening tool, particularly when someone has not made a spending estimate yet. It becomes unreliable when savings rates, mortgage payments, commuter costs, pensions, taxes, family support, or travel plans differ from the average assumption.

Use it to start a conversation, not to select a retirement date.

Age-based savings multiples

Age-based benchmarks—such as a multiple of salary by 30, 40, 50, or 60—help people measure progress during their working years. They are especially useful when retirement is decades away and a detailed spending budget would be mostly guesswork. They are less useful near retirement, when actual expenses, Social Security estimates, taxes, and healthcare can be known more clearly.

Our guide to retirement savings by age explains how to use those milestones without confusing them with a personal retirement income plan.

A year-by-year cash-flow projection

This is the most informative approach when retirement is within sight. It projects income sources, spending, taxes, healthcare, account balances, and withdrawals by year. It can show a temporary pre-Medicare gap, the effect of waiting on Social Security, a future RMD, or the impact of one spouse dying.

It also requires more inputs and still depends on assumptions. The goal is not false precision. It is to make the big assumptions visible enough to change them.

Common mistakes when setting a retirement target

Multiplying total spending without subtracting reliable income

If Social Security and a pension will cover half of spending, multiplying the entire budget by 25 can overstate the portfolio needed. If benefits are delayed or uncertain, subtracting them too soon can understate it. Match the income to the year it begins.

Forgetting that an early retirement has different years

The first five years may look nothing like the later years: no paycheck, no Medicare, possibly no Social Security, and higher withdrawals. A single average annual number can hide the bridge problem.

Treating home equity as spendable income without a plan

Home equity can be an important reserve, but it is not automatically cash flow. Downsizing, selling, borrowing, renting part of a home, and leaving a legacy are different choices with different costs. Do not count the same home value both as a protected place to live and as a fully available investment portfolio.

Ignoring the surviving-spouse years

Couples often budget as if two people will share the same tax filing status and household costs forever. The survivor may receive one Social Security benefit rather than two, file as single, and still face many household expenses. A plan that works only while both spouses are alive is incomplete.

Treating the target as a pass/fail grade

Being below a benchmark is information, not a verdict. The most useful response is to identify a lever: increase contributions, capture an employer match, reduce fixed expenses, delay retirement modestly, revisit claiming dates, pay down expensive debt, or set a less costly spending target. Investor.gov notes the power of regular investing over time; small recurring changes can matter more than a one-time perfect decision.

A practical way to use this number this week

1. Write down your desired annual spending in today’s dollars.
2. List Social Security, pension, and other income by the age each begins.
3. Subtract dependable income from spending to find the first-year portfolio gap.
4. Multiply that gap by 25, then also look at 28.6x (3.5%) for a more cautious case.
5. Test a version with higher healthcare costs, lower returns, or an earlier retirement date.
6. Run the 4% Rule Retirement Calculator to see what a range of withdrawal rates means for first-year income and portfolio longevity.
7. Revisit the result after a major life event, benefit estimate change, job change, market decline, or tax-law change.

The useful outcome is not one impressive number. It is a plan that explains what the number must cover, where the pressure points are, and which decision could improve the result.

Frequently asked questions

Is $1 million enough to retire?

It may be enough for one household and insufficient for another. At a 4% first-year withdrawal, $1 million produces $40,000 before tax from the portfolio. Add Social Security, a pension, and other income; compare the total with spending, taxes, healthcare, retirement length, and flexibility. The balance alone cannot answer the question.

Does the 25x rule include Social Security?

It can. The better method is to subtract expected Social Security from annual spending first, then apply the multiplier to the remaining portfolio gap. Be careful with claiming dates: benefits that start later do not cover the earlier years.

Should I use 25x of gross income or net income?

Neither is automatically correct. Use the annual amount your investments need to provide after considering the spending you want to fund and the taxes caused by withdrawals. Gross income can be a rough early-career benchmark; it is not the best near-retirement target.

Is the 4% rule safe?

“Safe” is a common search term, not a promise. A 4% first-year withdrawal is a historical planning guideline. It can be more or less resilient depending on retirement length, returns, inflation, fees, taxes, other income, and the ability to adjust spending.

What if I am far below my target?

Start by avoiding an all-or-nothing conclusion. Identify the next useful change: review the employer match, automate a higher contribution after a raise, reduce high-interest debt, update a Social Security estimate, test a later retirement date, or lower a recurring expense. A personal projection can show which lever has the greatest effect.

The bottom line

The 25x rule is valuable because it turns a vague fear—“will I have enough?”—into a question you can inspect. First define the annual spending gap. Then use 25x as a starting target, compare a more cautious case, and connect the answer to Social Security, taxes, healthcare, your spouse, and the years before Medicare.

That is more honest than promising a universal retirement number, and more useful than waiting for perfect certainty before making the next decision.

Primary sources

• Financial Planning Association: William Bengen's historical withdrawal-rate research
• FINRA: Managing Your Retirement Portfolio
• Investor.gov: Managing Lifetime Income
• Social Security Administration: Retirement Benefits

This article is educational and uses general assumptions. Tax, healthcare, and retirement-plan rules can change. Confirm important decisions with official sources and qualified professionals.