Should you really wait until 70 to claim Social Security?

You’ve probably heard this piece of advice over and over: “Wait as long as possible to claim Social Security. Ideally, wait until 70.”

On paper, that sounds smart. In reality, about 90% of people say they plan to ignore that advice and claim earlier. And honestly? I don’t think that automatically means they’re making a mistake.

Let’s walk through what’s really going on with Social Security timing, how the break-even math works, and how to decide what makes sense for you and your family.

How Social Security benefits are calculated (in plain English)

First, a quick refresher on how your retirement benefit timing works:

Full retirement age (FRA): For most people today, this is around age 67. This is the age when you get your “full” benefit, based on your earnings history.

Claiming early (as early as 62): You can start benefits at 62, but you’ll get a permanent reduction. For many people, claiming at 62 means about a 30% lower monthly benefit than if you waited until your full retirement age.

Delaying beyond FRA (up to 70): If you wait past full retirement age, your benefit grows each year until age 70. By 70, your monthly check is about 24% higher than it would be at 67, and roughly 75% higher than if you’d started at 62.

That higher or lower amount is then locked in for life (plus annual cost-of-living adjustments). So yes, the timing decision is a big deal.

The classic advice: wait as long as you can

Here’s why so many experts push the “wait until 70” strategy.

Let’s use a simple example based on today’s average benefit:

• Average benefit at full retirement age (around 67): about $2,000/month
• Claiming at 62: about $1,400/month (roughly 70% of $2,000)
• Claiming at 70: about $2,480/month (about 24% more than $2,000)

If you start at 62 instead of 70, you’ll collect checks for 8 extra years. In this example, that’s roughly $134,000 in total benefits by the time you turn 70.

So early filers are actually ahead in total dollars for quite a while. But once the person who waited until 70 starts getting their bigger check, the math starts to flip.

According to one analysis, it takes about 10.4 years after age 70 for the person who waited to “catch up” and surpass the total benefits of the early filer. That puts the break-even age at around 80.4.

What life expectancy has to do with it

This is where average life expectancy comes in.

For a 62-year-old today, the Social Security Administration estimates:

• A man is expected to live to about 83.6
• A woman is expected to live to about 86.5

If you live to those average ages, you’d be expected to get past that 80.4 break-even point. On paper, that means waiting until 70 usually wins in total lifetime dollars.

That’s the logic behind the “wait as long as you can” advice. But it leaves out a really important detail.

The hidden flaw in most Social Security calculators

Most break-even calculators quietly assume something unrealistic: that the money you receive from 62 to 70 just sits there doing nothing.

In other words, they act as if you earn 0% on your early benefits.

But what if you don’t just spend every dollar immediately? What if you invest some of it or at least keep it in a decent savings account?

What happens if you earn even a tiny return?

Let’s imagine you claim at 62 and earn a modest return on those early benefits:

• At 2% return: The break-even age moves back to around 82–83. The person who waited to file still eventually pulls ahead, but later, and by a smaller margin.
• At 4% return: The early filer stays ahead until about 83–84, and even after that, the difference in total lifetime benefits is pretty small.
• At 5% return: The early filer may stay ahead or very close for life. The gap at older ages becomes tiny.

Even if you’re not aiming for big investment returns, a 2% return is often achievable in safer savings products over time. The point isn’t to chase returns — it’s to realize that the simple, static calculator view can be misleading.

Once you factor in any reasonable return on early benefits, the “you’re leaving $180,000 on the table” headlines usually shrink a lot. Sometimes that scary number might really be more like $50,000 or even less.

So why do so many people claim Social Security early?

There are some very real reasons people choose to file before full retirement age — and they’re not all “bad decisions.” Common reasons include:

• Financial necessity: You simply need the income to pay bills, buy groceries, or cover healthcare.
• Health concerns: If you have serious health issues or a family history of shorter lifespans, waiting for a higher benefit you may never fully enjoy may not feel worth it.
• Job loss or burnout: If you’re out of work or physically can’t keep doing what you’re doing, Social Security may be the bridge you need.
• Spousal and family strategy: Sometimes one spouse filing early and the other delaying can create the best overall outcome for the household.

None of these are “wrong.” The mistake isn’t claiming early. The mistake is claiming without a plan.

The real question: what’s right for you?

Instead of asking, “What’s the perfect age to claim Social Security?” I’d rather you ask:

• How does Social Security fit into my overall retirement income picture?
• Do I have other income sources I can live on while I delay? (pensions, part-time work, 401(k)/IRA withdrawals, annuities, etc.)
• What’s my realistic health outlook and family history?
• What does my spouse’s benefit look like? (If you’re married, this can change the optimal strategy.)
• How comfortable am I with investment risk? If you’re relying on investing early benefits to help the math, that needs to match your risk tolerance.

For some people, delaying to 70 is a fantastic move. For others, a blended approach works better: maybe one spouse delays while the other files earlier, or you aim for full retirement age instead of 62 or 70.

If you want more context on how policy changes could affect your decision, you might also find it helpful to read about what a lower Social Security retirement age to 60 could mean for you or how a Social Security tax hike could affect your retirement.

Why a written plan matters so much

The Social Security timing decision feels stressful partly because it’s irreversible after a while. Once you’re past your small window to change your mind, you’re basically locked in for life.

There is a kind of “mulligan” built into the system: within the first 12 months of starting benefits, you can withdraw your application, stop receiving checks, and later reapply as if you never claimed. But there are two big catches:

• You can only do this once in your lifetime.
• You must pay back every dollar of benefits you received — there’s no payment plan.

Most people don’t want to (or can’t) write a big check to undo their decision. That’s why I’d rather see you make a confident choice upfront.

The best way to do that is with a written financial plan that looks at:

• Your expected expenses in retirement
• Your Social Security options and break-even points
• All your other income sources
• Your tax situation
• Your goals (spending, travel, gifts, legacy, etc.)

One survey found that fewer than 1 in 4 Americans have a written financial plan, yet people who do have one tend to have significantly more wealth than those who don’t. A plan doesn’t guarantee better outcomes, but it does make your decisions more intentional and less reactive.

How to start thinking through your own timing

If you’re within 10 years of retirement (or already there), here’s how I’d start:

1. Get your numbers: Create a mySocialSecurity account on SSA.gov and look at your projected benefits at 62, full retirement age, and 70.
2. List your other income sources: Pensions, part-time work, rental income, 401(k)/IRA balances, etc.
3. Estimate your expenses: What will it realistically cost you to live each month in retirement?
4. Run a few scenarios: What does your cash flow look like if you claim at 62 vs. FRA vs. 70? Where are the gaps?
5. Factor in your health and family history: If many close relatives passed away in their 70s, your decision might differ from someone with parents and grandparents who lived into their 90s.
6. Consider your spouse: If you’re married, coordinate your claiming strategies instead of deciding in a vacuum.

Even a simple, back-of-the-envelope version of this is better than just picking an age because “that’s what everyone else does.”

The bottom line: don’t blindly follow the 70 rule

Could you leave money on the table by claiming Social Security early? Yes. If you live a long life, have other income sources, and don’t invest your early benefits, waiting can absolutely pay off.

But there’s another risk that doesn’t get talked about enough: waiting so long for a higher check that you struggle in your 60s and early 70s, or never fully get to enjoy the money you worked so hard for.

The goal isn’t to win some perfect break-even calculation. The goal is to build a retirement that’s financially stable and emotionally satisfying for you.

Run the numbers, consider the trade-offs, and, if you can, build a written plan (with professional help if needed). Whether you end up claiming at 62, 67, or 70, the “right” decision is the one that supports your life, not just the one that looks best in a spreadsheet.