How Much Money Do You Need to Retire?

"How much do I need to retire?" is the question people most want a number for, and the one where a single number is least useful. Ask the internet and you'll get $1 million, or $1.5 million, or "25 times your expenses," or a chart that says you should already have three times your salary saved and now you feel behind.

The number isn't the point. Where it comes from is — because once you see how it's built, you can build your own, and you can see which lever actually moves it.

Here's how the common rules of thumb work, why they disagree, and how to get to a figure that reflects your life instead of an average.

Quick answer: Most retirement targets are built from one input: your expected annual spending in retirement. The most common shortcut multiplies that by 25 — which comes from the "4% rule": the idea that withdrawing about 4% of an invested retirement portfolio in the first year, then adjusting that dollar amount for inflation, historically survived many 30-year periods under specific assumptions. (It assumes an invested portfolio, not cash in savings.) So $60,000 a year of spending implies roughly $1.5 million. But that shortcut ignores Social Security, pensions, part-time income, taxes, health care before Medicare, and how long you'll actually be retired. Treat any number as a starting estimate to revisit, not a verdict. One more thing to pin down early: be clear whether your spending number is before tax or after tax. Retirees spend after-tax dollars, but many retirement accounts are taxable when withdrawn.

The one-line version: (expected yearly spending not covered by reliable income) × 25. This is a rough portfolio target, not a full retirement plan.

"Reliable income" might include Social Security estimates, pension income, annuity income, rental income after expenses, or planned part-time work — but each carries different risks. Everything below is how to fill in those numbers and where the shortcut breaks down.

Start With Spending, Not Salary

Most confusion comes from targeting the wrong input. Rules based on salary ("save 10x your income by 67") are rough proxies. What actually determines whether your money lasts is what you spend.

Two people earning $90,000 can need very different amounts. One has a paid-off house and spends $50,000 a year. The other rents and spends $80,000. Their salaries match; their retirement numbers aren't close.

So the honest starting point is: what will a year cost you in retirement? Some costs usually fall — commuting, work clothes, payroll taxes, retirement contributions themselves, and often the mortgage. Some usually rise — health care, travel early on, and time to spend money. Rather than assuming spending drops sharply, it's worth identifying which specific costs will actually change — "I'll spend way less" is a common and optimistic assumption.

Two things worth not assuming. Retirement spending isn't always flat: some people spend more in the early travel-and-active years, less in the middle, and more again later because of health care or long-term care. And don't assume the mortgage disappears unless you have a realistic payoff date.

If you don't know what you spend now, that's the first thing to fix — it's the input everything else depends on.

The 4% Rule and Where "25x" Comes From

The most cited shortcut works like this:

Annual spending × 25 = target portfolio

That multiplier is just the inverse of 4%. The 4% rule came out of research into historical U.S. market returns asking: what starting withdrawal rate, adjusted each year for inflation, would have survived a roughly 30-year retirement across bad historical stretches? One influential line of that research produced a starting withdrawal rate near 4% under particular assumptions — work often associated with William Bengen's 1994 research and later Trinity Study-style analysis.

Worth defining a word there: in this context, "survived" means the portfolio didn't run out during the tested period — not that the retiree maintained the same lifestyle comfortably in every scenario. And the result depends heavily on portfolio mix, fees, inflation, market returns, and withdrawal flexibility.

Run it:

Useful, and worth knowing its limits. The 4% rule is a historical backtest, not a guarantee — it's based on particular markets and periods, assumes a roughly 30-year horizon and a specific kind of portfolio, and doesn't promise anything about the future. Some researchers and planners use lower starting rates for more conservative plans, longer retirements, high valuations, or less flexible spending; others argue a rigid rule is too inflexible because real retirees adjust spending when markets fall. Both critiques are fair. Treat 25x as a reference point, not a law.

Subtract the Income Your Portfolio Won't Have to Replace

Here's the correction that changes the answer more than any other: your portfolio doesn't have to cover all your spending.

If you'll receive Social Security, a pension, annuity income, rental income, or part-time work, those reduce what your savings must produce. The multiplier should apply to the gap, not the whole:

(Annual spending − expected other income) × 25 = portfolio target

Take $60,000 of spending and $24,000 a year of expected Social Security. The gap is $36,000, and $36,000 × 25 is $900,000 — not $1.5 million. That's not a rounding difference; it's a different life plan.

This is why generic targets feel so crushing. They often quietly assume your portfolio funds everything. You can get a personalized benefit estimate from the Social Security Administration based on your actual earnings record — by creating or checking your my Social Security account — which is far better than guessing. Benefit amounts depend on your earnings history and the age you claim: claiming at 62, at full retirement age, or at 70 can produce very different monthly benefits. For married households, spousal and survivor benefits can change the picture further. Future benefit levels are subject to change by law.

Two cautions on the subtraction. Don't treat uncertain income — occasional side work, or a rental before expenses and vacancies — as guaranteed. And pensions can carry survivor-benefit choices, COLA rules, and solvency risks that affect how much of that income is truly reliable.

What the Shortcut Still Misses

Even a gap-adjusted number is an estimate. Things that push it around:

• Taxes. A dollar in a traditional 401(k) isn't a dollar of spending money — withdrawals are generally taxed as ordinary income. A dollar in a Roth may be tax-free if qualified. Taxable brokerage accounts and HSAs can have different tax treatment too. Two people with identical balances can have different real spending power, which is part of why having both pre-tax and Roth money gives you flexibility. Required minimum distributions can also affect taxable income later in retirement.
• Health care before Medicare. Retiring before 65 usually means covering health insurance yourself, and it can be one of the largest early-retirement line items. Medicare eligibility generally begins at 65 for most people, but premiums, deductibles, and out-of-pocket costs still matter after it starts.
• How long retirement lasts. The 4% research generally assumed about 30 years. Retiring at 55 could mean 35–40+.
• Sequence of returns. A bad market in your first few retired years hurts far more than the same drop later, because you're selling into it.
• Inflation and long-term care. Both are hard to predict and both matter.

None of this means the exercise is pointless. It means the output is a planning range you revisit, not a finish line you calculate once.

A Simple Way to Run Your Own Number

1. Estimate annual retirement spending. Start from your current annual spending — not your gross income — then adjust the lines you expect to change.
2. Subtract expected reliable non-portfolio income — Social Security estimate, pension, part-time work — and stress-test uncertain income separately.
3. Multiply the gap by 25 for a first-pass target. If you want to be more conservative, try 28–30x (roughly a 3.3–3.5% withdrawal rate) and see how the number moves.
4. Compare to what you have and what you're adding. Current balances plus ongoing contributions, using conservative assumptions rather than assuming high returns — this is where compound interest does the heavy lifting, and why years matter more than any single year's contribution.
5. Recheck annually, and after anything big: a raise, a move, a job change, a health change.
6. Run a range, not a single number — a base case, a conservative case, and an optimistic case — rather than treating one output as truth.

If the gap looks impossible, the levers are the same short list: spend less in retirement, save more now, work a little longer, or blend part-time income early on. Working longer helps twice — more years to save and fewer years drawing down. Small changes to the first and third often move the number more than heroic changes to the second.

The Bottom Line

There is no universal retirement number, and anyone who gives you one without asking what you spend is guessing. The version worth trusting is built from your own spending, reduced by the income you'll get from outside your portfolio, then stress-tested against taxes, health care, and how long you might be retired.

The most valuable thing this exercise produces usually isn't the target. It's noticing that the number is movable — and that the levers are in reach. Start with a spending estimate you can revise; a rough first version beats a perfect number you never begin.

That's what clarity looks like.

The hardest input is the first one: what you actually spend. Canopy can help you view supported connected and manually entered accounts, income, bills, spending, debts, goals, estimated cash flow, and supported investment balances in one place, so your spending estimate starts from real numbers instead of a guess. Where supported, Canopy's Investments tab can show retirement-projection estimates based on the data and assumptions entered — a readiness score, your savings rate, and an estimated projection toward a selected retirement age on the free Clarity plan, with an interactive projector and contribution wizard on Pro. Readiness scores are estimates, not advice or guarantees. Start with Canopy — free, no credit card needed.

Canopy is not a broker, investment adviser, tax adviser, or retirement plan provider. Canopy projections are estimates based on user-entered and supported connected data, assumptions, and simplified calculations; they are not predictions or guarantees and do not account for every factor. Canopy does not open, hold, or manage retirement accounts, recommend specific investments, contribution amounts, or withdrawal rates, determine whether you can afford to retire, or provide retirement readiness advice, safe-withdrawal-rate advice, Social Security claiming advice, tax planning, or health-care cost estimates.

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