The 25x Rule: Your Retirement Number Fast

What the 25x rule actually says

The 25x rule is a quick way to figure out your retirement savings target. Take what you expect to spend each year in retirement, then multiply by 25. That total is roughly the pile of money you need before you stop working. If you plan to spend $4,000 a month, you need $1.2 million saved. That is it. One multiplication. No spreadsheet required.

The rule is not a law. It is a fast estimate that gets you in the right ballpark. Real plans add taxes, inflation, health costs, and the years before Social Security or CPP/OAS kick in. We will get to all of that. But first, here is the simple math so you have a number to start from.

Where the 25 comes from

The number 25 is the flip side of the 4% rule. The 4% rule says: if you pull 4% out of your savings in year one, then adjust that pull for inflation each year after, your money has a strong chance of lasting 30 years or more in a mix of stocks and bonds.

Why 25? Because 1 divided by 0.04 equals 25. You need 25 of something to make 4% of it equal 1. So if you spend 4% of a pile each year, that pile must be 25 times your yearly spending. The two rules are the same idea wearing different clothes.

This shortcut comes from research on how long portfolios last under different market conditions. It is a planning tool, not a promise. Markets do bad things some years. The 25x number assumes you stay invested and give the money decades to grow back after a dip.

The quick math, step by step

Here is how the multiplication works with round numbers.

For example: You figure out you need $50,000 a year to cover housing, food, insurance, travel, and everything else.

• $50,000 × 25 = $1,250,000
• Check: $1,250,000 × 0.04 = $50,000. That matches your yearly spending. Good.

You do not need $1.25 million in a single savings account. The 25x target includes everything you can pull from: a 401(k), which is an employer-sponsored retirement account; an IRA, a tax-sheltered individual savings account; an RRSP, a tax-sheltered savings account in Canada; a TFSA, a tax-free savings account in Canada; brokerage accounts; rental income; a pension that converts to a lump sum. You add those together.

A by-spending table to find your number fast

Find the row closest to your yearly spending. Multiply by 25. That is your rough target.

Yearly spending	25x savings target	Monthly spending
$25,000	$625,000	~$2,083
$40,000	$1,000,000	~$3,333
$50,000	$1,250,000	~$4,167
$60,000	$1,500,000	~$5,000
$75,000	$1,875,000	~$6,250
$100,000	$2,500,000	~$8,333

If you are a couple, the yearly spending column should be your combined household spending, not each person's share. Our guide to how much a couple needs to retire walks through that in more detail.

What the 25x rule does not count

The shortcut is useful, but it leaves out real things. Knowing what is missing keeps you from feeling falsely ready or falsely behind.

Social Security and CPP/OAS. In the US, you can start Social Security as early as age 62. Your full retirement age is 67 if you were born in 1960 or later. In Canada, you can start CPP at 60 and OAS at 65. If those benefits cover part of your spending, you need less than 25x your full spending saved. More on that next section.

Taxes. Withdrawals from a traditional 401(k) or IRA are taxed as income. RRIF withdrawals in Canada, the account your RRSP turns into at 71, are also taxed. You might need to save slightly more than 25x your after-tax spending to cover the tax hit. Our guide to how taxes work in retirement breaks this down.

Health and long-term care costs. A serious illness can eat into a portfolio fast. The 25x math does not know your medical history.

How long you live. 25x is built to last around 30 years of withdrawals. Retire at 60 and live to 95, and you need 35 years covered. Retire at 50, and the gap grows.

Sequence of returns. If a big market crash hits the year you retire, your first withdrawals shrink the pile faster than the 4% model predicts. Adjusting your pull in bad years helps, but the flat 25x number does not show that risk.

How benefits shrink your savings number

Here is the big reason the 25x rule can overstate what you need to save. Social Security, CPP, and OAS cover a chunk of your spending. You only need your savings to fill the gap.

For example: You spend $60,000 a year. You are married, and both spouses will collect about $2,500 a month each from Social Security, so $60,000 a year from benefits. Your savings gap is $60,000 minus $60,000, which is zero. Your savings target drops dramatically.

Now a harder example. You spend $70,000 a year. You will collect $30,000 a year from Social Security starting at full retirement age of 67. But you want to retire at 62, five years before full age. For those five gap years, you need the full $70,000 from savings. After 67, you only need $40,000 a year from savings.

• Gap years (62 to 67, five years before full Social Security): $70,000 × 5 = $350,000 from savings
• Steady state after benefits start: $40,000 × 25 = $1,000,000
• Total target, roughly: $1,350,000

If you live in Canada and rely on OAS at 65, the gap shrinks to three years. Same method, different timeline. For example, retire at 62 and wait three years until OAS kicks in: $70,000 × 3 = $210,000 from savings during the gap.

That is still a big number, but it is way less than $70,000 × 25, which would be $1,750,000, because you would never have spent that much in a year once benefits landed. If benefits start later or you retire earlier, the gap grows. Our guide on retiring early when benefits start later works through that gap-year math.

When 25x helps and when it misleads

The rule is great when you need a fast gut check. "Am I in the right zip code for retirement?" Twenty-five multiplication gets you an answer in ten seconds. It also gives you and a partner a shared, simple target to aim at.

The rule misleads when you treat the number as a finish line and stop thinking. It does not tell you what to invest in. It does not tell you whether $50,000 of yearly spending is realistic in your city. It does not account for a pension, a paid-off house, or a part-time job you plan to keep.

If you want to go past the shortcut and see every step of the math, including taxes, inflation, benefit timing, and the years before checks arrive, When Can I Retire works out the exact age you can retire and shows how ready you are today. You can upload a statement or type in your numbers. It is free to get a first check.

A quick way to make 25x your own

1. Write down what you truly spend each year, not what you wish you spent. Look at last year's bank and credit card statements.
2. Subtract what Social Security, CPP, OAS, or a pension will cover (do this after reading the timing rules on ssa.gov or canada.ca).
3. Multiply the remaining yearly gap by 25.
4. Add a cushion for the gap years before benefits start.
5. Compare that total to what you actually have saved today.

You now have a number that is personal, not generic. If the number feels scary, remember: that is a starting point, not a verdict. Plenty of people find their real gap is smaller than they feared once they subtract benefits and paid-off expenses.

If 25x feels too simple or too rough for your situation, our how much do I need to retire guide walks through a fuller calculation, one line at a time, with no jargon.