How Much Money Do I Need to Retire?

Why there isn't one universal retirement number

Rules of thumb like "save 10 times your salary" or "you'll need 80% of your income" are shortcuts built on averages. They are useful for a first sanity check, but they ignore the variables that actually decide whether money lasts: what you plan to spend, when you stop working, how much guaranteed income you have, and how long you live.

Two households with identical account balances can face completely different outcomes. One may own their home outright, claim Social Security at 70 and spend modestly. The other may carry a mortgage, retire at 62 and travel heavily for the first decade. The number that works for one is not the number that works for the other.

A more useful approach is to work backward from spending rather than forward from a savings rule.

Start with what you expect to spend

Retirement spending is the foundation of every other estimate. Rather than guessing a percentage of your current income, build a rough annual budget for the retirement you actually expect: housing, food, transportation, insurance, healthcare, travel, gifts and support for family.

Spending is rarely flat across retirement. Many households spend more in the early, active years, less in the middle years, and more again later if health or long-term care costs rise.

• Fixed costs that continue: housing, utilities, insurance, property taxes.
• Costs that may fall: commuting, payroll taxes, retirement contributions, a mortgage if it is paid off.
• Costs that may rise: health insurance before Medicare eligibility, out-of-pocket medical costs, travel and hobbies.
• One-time costs: a vehicle, a roof, a move, helping an adult child.

Subtract the income you'll receive regardless of markets

Before asking how much savings you need, identify the income that arrives whether markets rise or fall. For most households that means Social Security, and sometimes a pension or annuity income.

The Social Security Administration lets you view your personalized estimated benefit at different claiming ages through a my Social Security account. Claiming earlier reduces the monthly benefit; delaying past full retirement age increases it up to age 70.

Whatever remains after guaranteed income is the gap your savings must fill — and that gap, not your total balance, is the number worth planning around.

How retirement age and longevity change the math

Retiring earlier does two things at once: it adds years of withdrawals and removes years of saving and potential growth. It can also mean paying for health coverage privately until Medicare eligibility at 65.

Longevity is the variable most people underestimate. Planning only to average life expectancy leaves roughly half of the possible outcomes unfunded, which is why many planners model a retirement lasting into the early or mid-90s.

What withdrawal rate assumptions actually mean

A withdrawal rate is simply the percentage of your portfolio you take in the first year of retirement, usually adjusted for inflation afterward. The well-known "4% rule" came from historical research on U.S. market returns and a 30-year horizon — it is a research finding, not a guarantee or a recommendation.

The practical use of a withdrawal rate is as a translation tool: it converts a spending gap into an approximate savings target, and it makes the tradeoff between spending more and running out visible.

How inflation affects the target

A retirement lasting 30 years gives rising prices a long time to work. Even modest inflation meaningfully reduces what a fixed dollar amount buys later in retirement, which is why the same lifestyle costs more in year 25 than in year one.

Some income sources adjust: Social Security benefits are subject to an annual cost-of-living adjustment. Many pensions and fixed annuity payments do not adjust, so the share of your income that keeps pace with inflation matters as much as the total.

Why taxes mean balances aren't directly comparable

A dollar in a traditional 401(k) or IRA is generally taxable when withdrawn. A dollar in a Roth account, if requirements are met, generally is not. A dollar in a taxable brokerage account follows capital gains rules on the growth portion.

That means two people with the same total balance can have very different spendable income. Required minimum distributions from pre-tax accounts also begin at an age set by law, which can push taxable income higher in later years whether or not you need the money.

Tax rules and thresholds change. Confirm current requirements with IRS publications or a qualified tax professional before making decisions.

Healthcare and long-term care

Healthcare is often the largest wildcard. Retiring before 65 usually means buying coverage privately until Medicare eligibility. After 65, Medicare covers a great deal but not everything — premiums, deductibles, coinsurance, dental, vision and hearing costs still fall to the household.

Long-term care is a separate question from routine medical care and is generally not covered by Medicare beyond limited skilled nursing situations. Deciding how you would fund extended care — savings, insurance, family support, or Medicaid eligibility — is part of the number.

Putting it together

The output is a planning range, not a verdict. Most people find the exercise more useful for revealing which levers matter — spending, retirement date, claiming age, tax location of assets — than for producing a precise figure.

1. Estimate annual retirement spending in today's dollars.
2. Subtract expected guaranteed income (Social Security, pension, annuity).
3. Multiply the remaining gap by 25 (a 4% withdrawal assumption) or 28–30 for a more conservative assumption.
4. Adjust upward for pre-65 health coverage, known one-time expenses, and taxes owed on pre-tax accounts.
5. Compare the result with your current savings and planned contributions to see the size of the distance.