How long does retirement last? Most American men don't seem to know

Most of us seem to know that the average American lives between 70 and 80 years: 73.5 years for men, and 79.3 for women, to be exact.

Fewer of us understand that life expectancy rises with age. An American man who turns 70 today will live to 85, on average. A woman of 70 will live to 87.

That knowledge is called longevity literacy. Many of us don’t have it, and ignorance may cost us.

Let's say a man retires at 65 with $250,000 in savings. If he spends it down at a rate of $30,000 a year, the money might last him to age 73.5. But longevity tables say he can expect to live another decade, to 84.

A large share of older Americans, and especially men, don’t know how long their own retirement is going to last: in other words, how long they are going to live.

Longevity literacy matters when it comes to retirement planning. If your retirement budget assumes you will live to 75, and you make it to 85, you will probably run out of money.

“Moving into retirement, you have to think about, ‘When am I going to die?’” said Paul Yakoboski, a senior economist at the TIAA Institute, the research arm of the financial services nonprofit. “That filters back on how I’m managing my money, how I’m drawing it down.”

The TIAA Institute publishes widely read surveys on retirement finance. When the institute asked Americans, in a recent survey, how long a man of 65 is likely to live, only one-third of the men gave the correct answer: 19 more years.

A larger share of men in the TIAA survey, 35%, underestimated the lifespan of a retirement-age male. Another 23% said they didn’t know. That response, in particular, left researchers bewildered: the question was multiple-choice.

Women seem to understand longevity somewhat better. In the survey, 36% correctly answered that a woman of 65 can expect to live about 22 more years, to age 87. Only 26% guessed low.

“Women just have a better grasp on that,” Yakoboski said. “The reality of most households, it’s the woman who focuses on the health care in the family and everybody’s well-being and caregiving issues.”

Their findings draw on a nationally representative survey of 3,503 adults.

How long does retirement last? Longer than many people think

Luigi Ferrucci is 69. According to official Centers for Disease Control and Prevention data for human longevity, men live to about 74, which would give Ferrucci another five years.

Dr. Luigi Ferrucci is scientific director at the National Institute on Aging, part of the National Institutes of Health. He is an authority on human longevity.
Dr. Luigi Ferrucci is scientific director at the National Institute on Aging, part of the National Institutes of Health. He is an authority on human longevity.

But Ferrucci works at the National Institute on Aging, and he knows about longevity. If an American male reaches age 69, he can expect to live to 85, according to a simple longevity calculator from the Social Security Administration.