The 70% Rule Answers the Wrong Retirement Question

If you have ever been told to plan on living on 70% to 80% of your pre-retirement income, you were given a shortcut, not a strategy. The Department of Labor still presents 70% as a quick estimate, and the Social Security Administration notes that many advisers use about 80% as a general benchmark. Those rules of thumb are easy to remember. They are just too blunt to do the real work of retirement planning.

A percentage cannot tell you how your life will change

The problem with the 70% rule is not that it is always wrong. It is that it answers the wrong question. It asks how much income should be replaced, when the more useful question is what your life is likely to cost once work income stops.

Some expenses may fall in retirement. Commuting can disappear—payroll savings end. Work clothing may matter less. But other costs stay with you, and some rise. Housing often remains the largest expense. Transportation can shrink. Healthcare can take a larger share of the budget as people age. A single percentage can hide all of those differences and still sound precise.

It can also hide how uneven income replacement already is. Social Security says replacement rates vary by earnings level and when benefits begin. At age 67, the agency says the share replaced can be as high as 78% for very low earners, about 42% for medium earners, and about 28% for high earners. That alone should make us cautious about treating one replacement-rate rule as a dependable plan.

The better starting point is spending, not income.

A stronger retirement plan begins with what your household actually spends now, what is likely to fall away, what is likely to remain, and what may become more expensive later.

BLS data show why that frame is more useful. In 2022, households age 65 and older spent an average of $20,362 on housing, $7,540 on healthcare, and $8,172 on transportation. Among households age 75 and older, healthcare rose to 14.4% of total spending while transportation fell to 11.6%. Inflation matters, but aging changes the mix itself.

Once you plan from spending rather than a generic replacement target, you can separate what is essential from what is flexible. You can see whether your current lifestyle already leaves room for saving. And you can build a retirement plan around the life your money needs to support, rather than around a formula that may never have described your household in the first place.

Retirement planning has to make room for aging

This is where many quick estimates break down. They account for inflation, but not always for aging.

The later years of retirement can bring a different kind of spending pressure: more help, more convenience, more medical costs, or some form of long-term care. HHS says approximately 70% of people turning age 65 can expect to use some form of long-term care during their lives. That does not tell you exactly what your future will look like. It does tell you a sound plan should leave room for the possibility that later-life needs will not look like early-retirement spending.

That is why retirement planning has to be grounded in present reality and stretched forward with honest assumptions. A plan that works only if your life stays flat is not much of a plan.

The smoothest transition usually starts before retirement

Economists call it consumption smoothing. In plain English, it means you begin adjusting before the day you stop working.

Instead of assuming retirement will require one dramatic drop in lifestyle, you make smaller, believable changes while you still have earned income. You may pay down debt faster. You may redirect raises or bonuses toward savings. You may decide that a slightly smaller house, a more modest car, or a simpler spending pattern makes retirement easier to recognize and sustain.

That approach does more than increase savings. It makes retirement feel less abrupt. It also gives you better information, because when you track spending now, you can see which costs are tied to work, which costs reflect the life you most want to preserve, and where you still have room to adjust. And a plan needs room for uneven years: in EBRI’s 2024 Spending in Retirement Survey, one in three retirees said they had experienced unexpected spending needs after retiring, and 31% said their spending was higher or a little higher than they could afford.

A better question leads to a better plan

The right retirement question is not, “What percentage of my income do I need to replace?” It is, “What will it take to support the life I want, as my spending changes over time?”

That question is less tidy, but it is far more useful. It forces you to think about housing, taxes, healthcare, care needs, family support, and the tradeoffs you are actually willing to make before and during retirement.

The 70% rule may still be useful as a rough conversation starter. It should not be mistaken for a retirement plan. A real plan is built from current spending, future tradeoffs, and the practical cost of aging. When you start there, retirement becomes less about chasing a formula and more about building a life your money can continue to support.

Disclosure: Dovetail Financial Group LLC (“Dovetail Financial”) provides this content for informational and educational purposes only. It is not individualized investment, tax, legal, or accounting advice, and it is not a recommendation to buy or sell any security or adopt any investment strategy. Readers should consult their own financial, tax, and legal professionals before acting.

Information contained herein is believed reliable but is not guaranteed as to accuracy or completeness, and opinions may change without notice. Investing involves risk, including possible loss of principal. Asset allocation and diversification do not guarantee a profit or protect against loss, and past performance does not guarantee future results. Dovetail Financial Group LLC is a registered investment adviser. Registration does not imply a certain level of skill or training. Form ADV Part 2A and Form CRS are available through the SEC’s Investment Adviser Public Disclosure website. © 2026 Dovetail Financial Group LLC. All rights reserved.