The 70% Retirement Income Rule, and Why It Probably Doesn't Apply to You

Rewritten in 2026. The original, published in 2015, made this argument as an extract promoting the author's book. The argument is sound and worth having on its own.

The standard advice is that you need about 70% of your final working income to retire comfortably. The figure appears in calculators, in advice columns, and in most conversations about whether someone has saved enough.

For a practical overview of wage percentage calculations, Monitask provides read more with further context.

It is a rough average, it fits very few individual households, and for most middle and higher earners it is too high — which matters, because an inflated target makes people believe retirement is out of reach when it is not.

General information, not financial advice. Your own figure depends on facts an article cannot know.

What the rule leaves out

The 70% figure compares your retirement income to your gross working income. But you were never spending your gross income on yourself.

You were saving for retirement. Frequently 10-15% of income, sometimes more. That stops the day you retire — not as a sacrifice, but because its purpose has been served.

You were paying payroll taxes. Social Security and Medicare taxes come off earned income and do not apply to most retirement income.

Your income tax is usually lower, because the income is lower and some of it may be taxed differently.

You may have been supporting children. Education costs, and support that continues past graduation more often than people plan for.

You may have been paying a mortgage that ends.

You had work costs. Commuting, parking, clothing, meals bought because there was no time to make them.

Add these together and the share of gross income a household was actually spending on its own day-to-day living is frequently well under 70% during the working years. Replacing more than you were spending is not a target — it is a surplus.

Where the rule understates instead

It cuts both ways, and the households where 70% is too low are worth naming.

Healthcare costs before Medicare eligibility. If you retire before 65, this is often the single largest expense and it surprises people.

A mortgage that has not been paid off, or that was refinanced later in life.

Ongoing support for adult children or ageing parents, which is increasingly common in both directions simultaneously.

Plans that cost money. Travel, a second home, a business. Early retirement is frequently more expensive than working, not less.

Long-term care, which is not covered by Medicare in the way most people assume and is the largest unplanned expense in retirement.

Lower earners, for whom a larger share of income was going on essentials that do not stop.

Working out your own number

More useful than any rule of thumb, and it takes an evening.

Start from spending, not income. What did you actually spend last year? Bank and card statements, twelve months. This is the number that matters and most people have never calculated it.

Subtract what stops. Retirement contributions, payroll taxes, commuting and work costs, the mortgage if it will be paid off, support that will end.

Add what starts or increases. Healthcare before 65, more of whatever you plan to do with the time, home maintenance you previously deferred, and eventually higher medical costs.

Do it in three versions. A basic year, a normal year, and a year with something expensive in it. The gap between them tells you more than a single figure.

Then compare against expected income: Social Security, any pension, and what your savings can sustainably produce.

The Social Security decision

Worth its own attention, because it is the largest single variable most people control.

Benefits increase for each year you delay claiming, up to age 70. Claiming early permanently reduces the monthly amount. For a household where one person expects to live a long time, or where one spouse's benefit will support the survivor, the delay can be worth a great deal.

It is not automatically right. Health, need, and whether you are still working all matter. But it is a decision, not a default, and it deserves the same attention as any investment choice.

The Social Security Administration's own calculators at ssa.gov are the reliable source. Be wary of anyone offering to optimise this for a fee.

What to do with a number you do not like

If the arithmetic shows a gap, the options are unglamorous and effective:

Work slightly longer, which improves it from both ends — more contributions and fewer years to fund.

Work part-time initially. The transition does not have to be a cliff, and even modest earnings early in retirement reduce the drawdown at the point when it matters most.

Spend less, identified specifically rather than in general.

Move, either to somewhere cheaper or to something smaller. Frequently the largest single lever available.

Delay claiming Social Security.

The point worth taking

The 70% rule is a starting point for someone with no information, and you have information.

Your own figure, built from what you actually spend, is both more accurate and usually more encouraging than the rule suggests — and where it is not, you have found that out while there is still time to act on it.

Rewritten in 2026. The original was an extract published to promote the author's book. The underlying argument has been kept and expanded; the promotional framing and the book references have been removed.

For additional public information on investor education and financial planning, see Investor.gov.