“How much do I need to retire?” is one of the most common money questions, and one of the hardest to answer in a single sentence. Retirement depends on how long you live, how much you spend, investment returns, taxes, health costs, and other income (Social Security, pensions, part-time work).
While BudgetBadger is not a financial advisor and does not provide investment or retirement advice, this article outlines how planners and researchers think about the problem so you can ask better questions of tools, employers, and professionals.
Americans are behind on retirement savings
Federal Reserve data and retirement research groups regularly show wide dispersion: some households have robust 401(k) balances; many others have little outside Social Security.
The Federal Reserve Survey of Consumer Finances in 2022 reported a median retirement account balance of about $87,000 per family. That midpoint hides wide gaps by age and income, but it is far below what many models assume for a multi-decade retirement.
The EBRI/Greenwald Retirement Confidence Survey (2025) found that about one in three workers were not confident they would have enough money to live comfortably through retirement. Workers without consistent plan access in their 30s and 40s are especially likely to feel behind schedule, and rising living costs remain a top reason many say they cannot save as much as they want.
That does not mean retirement is impossible. It means starting early, using employer matches, and increasing savings rate over time matter.
Common framing tools (not prescriptions)
Multiples of salary
Some guidelines suggest saving 1x salary by 30, 3x by 40, 6x by 50, 8x by 60, and 10x+ by 67 as rough checkpoints. These come from industry research (Fidelity and others publish variants). They assume continuous saving, market growth, and Social Security.
The 4% rule (and its critics)
The 4% rule began with historical U.S. portfolio studies: withdraw roughly 4% of the portfolio in year one, adjust for inflation afterward, and hope the portfolio lasts ~30 years. It is a teaching tool, not a guarantee. Low bond yields, high starting valuations, and long retirements led many advisors to use 3–3.5% for conservative plans or to cut spending in down markets.
Expenses-first planning
Many planners start with spending, not a salary multiple. The idea is to estimate what you will actually need each year in retirement, then figure out how big a portfolio must be to fund the part your paycheck, Social Security, and pensions will not cover.
- Estimate annual retirement spending — Look at what you spend today (housing, food, insurance, travel, debt payments). Retirees often spend 70–80% of pre-retirement levels because commuting, payroll taxes, and retirement contributions go away. Healthcare is the big exception: Medicare helps, but premiums, out-of-pocket costs, and long-term care can push total spending back up or above your working-years budget.
- Subtract other income — List what you expect from Social Security, a pension, rental income, or part-time work. What is left is the annual amount your portfolio needs to supply.
- Size the portfolio — Divide that gap by a conservative withdrawal rate, or multiply by 25–33. Those multiples are the inverse of 3–4% annual withdrawals (see above). At 4%, you need about 25 years of spending in the portfolio ($1 of annual need ≈ $25 saved). At 3%, you need about 33 ($1 ≈ $33 saved).
- Adjust for taxes — Money in a traditional 401(k) or IRA is taxed when you withdraw it. Roth accounts are generally tax-free in retirement. Taxable brokerage accounts may trigger capital gains. The portfolio target should be large enough that after-tax withdrawals still cover the spending gap.
A simplified example: Suppose you spend $80,000 per year today and expect $64,000 in retirement (80%). Social Security and a small pension cover $30,000. Your portfolio must fund $34,000 per year. At a 4% withdrawal rate, that suggests roughly $34,000 × 25 = $850,000 in investable assets. At 3%, the same need points to about $1.1 million. Taxes, inflation, and a longer life would push the target higher. The math is illustrative, not a personal recommendation.
What moves the needle
- Spending choices — Same wealth supports different lifestyles. Travel-heavy retirements cost more than downsized local living.
- Investment returns — Sequence of returns risk matters: big market drops early in retirement hurt more than late drops.
- Taxes — Traditional 401(k)/IRA withdrawals are taxable; Roth withdrawals may be tax-free; capital gains in taxable accounts have their own brackets. Location of accounts changes net spend.
- Longevity and healthcare — Living to 95 with long-term care needs looks different from retiring at 67 with employer retiree health coverage.
- Social Security timing — Claiming at 62 vs. 70 changes lifetime income; married couples have additional claiming strategies professionals often model.
Get started now
You may not be ready for retirement today, but there are easy levers you can get started on immediately:
- Capture current spending by organizing your spend into a budget spreadsheet or app so retirement estimates use real data, not guesses.
- Increase 401(k)/IRA contributions when income rises (even 1% per year adds up).
- Avoid leaving employer match on the table.
- Build an emergency fund so you do not raid retirement accounts for shocks.
- Consult a fee-only financial planner or fiduciary when balances and life events justify personalized projections.
Retirement savings may seem daunting now, but once you get a handle on your finances and start working towards a goal, you won't regret it.
Related reading: How Much Emergency Fund Do You Need? · How Budgeting Can Save You Money · Save for Your Child's College Education