Most Social Security advice starts with the same warning: don't claim too early.

Wait until your full retirement age. Better yet, wait until 70. Get the biggest check possible, because once you claim, you're locked in for life.

But that advice is incomplete. I've reviewed hundreds of retirement plans, and I've seen situations where claiming at 62 made sense, others where waiting until 70 was clearly stronger, and plenty where the best answer fell somewhere in between.

The biggest Social Security mistake isn't necessarily claiming too early or waiting too long. It's choosing a Social Security claiming age in isolation from the rest of your retirement plan.

Your benefit is only one piece of the decision. Your spending, investments, taxes, health, life expectancy, marital status, and the income your spouse would receive after you die can all change the answer.

In this article, I'll show you three common ways people use the wrong framework when deciding when to claim Social Security — and how to make the decision based on what that income actually needs to accomplish. I'll also explain what options may be available if you've already claimed and are now having second thoughts.

I'm Daniel Masuda Lehrman. I'm a fee-only Certified Financial Planner in Honolulu, and I help people make the transition into retirement with more clarity and confidence.

Let's get into it.

Mistake #1: Optimizing Social Security Instead of Optimizing Your Retirement Plan

The first mistake is treating Social Security as though it were a stand-alone investment.

This usually shows up as break-even analysis.

You compare claiming at 62 with waiting until 70. Claim early and you receive more checks, but each check is smaller. Wait until 70 and you receive fewer checks, but each one is larger. Somewhere around your early 80s, the cumulative totals may cross.

That gives you a break-even age, and people start treating the decision like a bet on when they'll die.

"My parents lived into their 90s, so I should wait."

Or, "My dad died at 74, so I'm taking the money at 62."

Break-even math can be useful, but it doesn't tell you whether your retirement plan actually works.

The Bridge Years Aren't Free — But Neither Is Claiming Early

If you delay Social Security, something else has to fund your lifestyle during the waiting period. That might be continued employment, cash savings, a pension, withdrawals from an IRA, or sales from a taxable investment account.

Those bridge years aren't free. But neither is claiming early.

Using your portfolio first can increase the risk of selling investments during a market downturn. Claiming early, on the other hand, permanently reduces a source of inflation-adjusted lifetime income. One choice can increase pressure on your portfolio today; the other can reduce your guaranteed income later in retirement.

That is the actual tradeoff.

Let Me Show You What I Mean: Meet Linda

Consider a hypothetical retiree I'll call Linda.

Linda retires at 65. Her Social Security benefit at her full retirement age of 67 would be $2,600 per month. If she waits until 70, her benefit would be approximately $3,224 per month, before future cost-of-living adjustments.

Waiting gives Linda a substantially larger check for the rest of her life. It also means her portfolio must provide more of her income for five years.

If Linda needs an additional $27,000 per year from her investments while she waits, that is approximately $135,000 of additional withdrawals before her age-70 benefit begins.

Does that automatically mean Linda should claim earlier? No.

Those withdrawals may be a worthwhile exchange for a larger lifetime benefit — particularly if Linda is healthy, expects to live a long time, and has enough assets to comfortably bridge the gap.

But suppose Linda's initial portfolio withdrawal rate is already high. A prolonged bear market shortly after retirement could force her to sell more investments while their values are depressed. In that situation, claiming at 65, 66, or 67 might reduce pressure on the portfolio enough to improve the overall sustainability of her plan.

The correct question isn't, "At what age do the Social Security checks break even?"

It is, "Which claiming strategy gives Linda the strongest overall retirement plan?"

To answer that, I would want to compare several claiming ages and test how each one affects:

• Her portfolio withdrawals
• Her probability of funding retirement through a long life
• Her exposure to a poor market early in retirement
• Her tax brackets
• Her opportunity to complete Roth conversions
• Her Medicare premiums
• Her ability to spend confidently during the healthier early years of retirement

That last list is exactly why taxes in retirement belong in this conversation from the beginning, not after the claiming decision has already been made.

About That "Guaranteed 8% Return"

This is also why I'm cautious when people describe delaying Social Security as earning a "guaranteed 8% return."

For people born in 1960 or later, delaying after full retirement age increases the benefit by 8% of the full-retirement-age amount for each full year, up to age 70. But that isn't the same as earning interest in an investment account. You are giving up payments today in exchange for a larger monthly benefit later, and the value of that exchange depends partly on how long you and potentially your spouse live.

Delaying can be extremely valuable. It just shouldn't be analyzed as though Social Security exists in a vacuum.

Your objective is not to produce the largest possible Social Security check. Your objective is to create the most dependable retirement income with the resources you have.

Mistake #2: Making an Individual Decision When You're Part of a Household

The second mistake can have even greater consequences, because someone else may live with the decision long after you're gone.

If you're married, your Social Security strategy usually shouldn't be based only on your own life expectancy.

When one spouse dies, the household generally goes from receiving two Social Security income streams to one. The surviving spouse can generally receive an amount equal to the larger applicable benefit, not both checks added together.

That means the higher earner's claiming decision often determines the survivor income available to the lower-earning spouse. I've written more about that specific question here: Will taking Social Security early hurt your spouse's benefit?

Meet Frank and Ellen

Consider a hypothetical couple I'll call Frank and Ellen.

Frank is the higher earner. His benefit at his full retirement age is $3,400 per month. Ellen's benefit on her own record is $1,700 per month.

Frank claims at 62 and receives 70% of his full-retirement-age benefit, or $2,380 per month. Together, Frank and Ellen receive $4,080 per month, assuming Ellen is already receiving her $1,700 benefit.

Frank chose 62 because men in his family generally didn't live past their late 70s. If he only compares his own early checks with his own future checks, that decision may appear reasonable.

But Frank's life expectancy is only half of the analysis.

Suppose Frank dies at 79 while Ellen is 76 and in good health. The household now loses one of its two income streams. Because Frank claimed early, the special widow's-limit rules could leave Ellen with a survivor amount of approximately $2,805 per month in this simplified example.

Their Social Security income would fall from $4,080 to about $2,805 per month — a decline of roughly 31%.

But Ellen's expenses probably won't fall by 31%.

The mortgage or rent may be unchanged. Property taxes, utilities, home maintenance, and insurance may barely move. She may now need to hire help for things Frank previously handled. Later in life, caregiving expenses could increase as well.

Now Run the Same Math With Frank Waiting

Now compare that with Frank waiting until 70. His benefit would have grown to approximately $4,216 per month, before future cost-of-living adjustments. If he died first, that larger amount could become the foundation of Ellen's survivor income.

The difference between a survivor benefit of $2,805 and $4,216 is more than $1,400 per month. If Ellen lived another 15 years, that could mean over $250,000 of additional survivor income, even before considering cost-of-living adjustments.

That doesn't mean waiting until 70 was free money. Frank would have given up eight years of earlier benefits in order to create that protection. The household would have needed another source of income during those years.

The point is that his claiming decision wasn't merely a bet on whether Frank would live beyond the break-even age. It was also a decision about how much income Ellen would have if she outlived him.

For many married couples, delaying the higher earner's benefit is similar to purchasing additional longevity protection for the surviving spouse.

One strategy that can work well — although it is not right for everyone — is for the lower earner to claim earlier while the higher earner delays. The lower earner's benefit provides income during the bridge years. Meanwhile, the higher earner's future benefit continues growing and can eventually provide a larger survivor income. This can create a balance between cash flow today and protection later.

But even that shouldn't become another universal rule. The right strategy depends on each spouse's age, earnings history, health, expected longevity, other guaranteed income, and the amount available in savings and investments. A large age gap between spouses can also materially change the analysis.

The central lesson is simple: if you're married, don't ask only, "When should I claim my benefit?"

Ask, "How will each claiming strategy affect our income while we're both alive — and the income either of us would have after the first spouse dies?"

That is a household decision, not an individual one.

Mistake #3: Letting a Rule of Thumb — or Fear — Make the Decision

The third mistake is allowing one simple rule, one headline, or one fear to choose your claiming age for you.

You've probably heard several of these rules:

• "Always claim at 62 because tomorrow isn't guaranteed."
• "Always wait until 70 because that produces the biggest check."
• "Claim Social Security as soon as you retire."
• "Never spend investment assets while waiting to claim."
• Or more recently, "Claim now before Social Security runs out of money."

Every one of these rules contains just enough truth to sound convincing. None of them is a retirement plan.

Claiming at 62 could make sense for someone with a shorter life expectancy, an immediate need for income, no spouse depending on a survivor benefit, or a portfolio that would otherwise face an unsustainable withdrawal rate.

Waiting until 70 could make sense for a healthy retiree with sufficient assets, a long family history of longevity, or a lower-earning spouse who would rely on the higher benefit as a survivor.

And claiming somewhere between 62 and 70 may provide the best balance between current income and long-term protection.

Your Retirement Date and Your Claiming Date Are Two Different Decisions

Your retirement date and your Social Security claiming date do not have to be the same.

You can retire at 62 and delay Social Security by using cash or investments as a temporary bridge. You can also continue working and claim Social Security, although benefits may be temporarily withheld under the earnings test if you are below full retirement age and earn more than the annual limit.

Treating retirement and claiming as a single decision can cause people to work longer than they need to — or claim earlier than their plan requires.

What About the Headlines?

Fear about Social Security's future creates another version of the same problem.

The program does face a long-term funding shortfall that Congress will eventually need to address. But claiming early does not place your benefit into a protected account that future legislation can't touch. You still receive a benefit under the same system, only at a permanently reduced starting amount.

That doesn't mean everyone should assume today's rules will remain unchanged forever. A thoughtful retirement plan can model a potential benefit reduction and determine whether the plan remains sustainable.

What you don't want to do is make a permanent decision in response to a frightening headline without first seeing how the numbers affect you.

The opposite problem is paralysis. Some people are so afraid of choosing the wrong age that they never make an intentional decision at all. They simply keep waiting. Sometimes waiting is exactly the right strategy, but it should be a decision — not the absence of one.

Four Questions Worth More Than Any Rule of Thumb

Instead of looking for a universal rule, ask four questions:

• First, what will fund my spending if I delay?
• Second, how does each option affect the probability that my money lasts throughout retirement?
• Third, if I'm married, what income will the surviving spouse receive?
• Fourth, how does the timing interact with taxes, Roth conversions, Medicare premiums, and other sources of retirement income?

Those questions won't produce the same answer for everybody. That is precisely the point.

Already Claimed? You May Still Have Options

What if you've already claimed Social Security and you're worried that you made the wrong decision?

Depending on your age and when you filed, there may be two ways to revisit it.

Withdrawing Your Application

You can generally request to withdraw a Social Security retirement application within 12 months of its approval. You can only do this once, and you must repay the benefits that you and your family received on your record. You may also have to repay amounts withheld for Medicare premiums, taxes, or other obligations.

If Social Security approves the withdrawal and everything is repaid, your application is treated as though it never happened. You can apply again later.

This can be valuable, but I would not describe the first year as a risk-free trial period. Repaying a year of benefits can be difficult, particularly when family benefits, Medicare, or taxes are involved.

Voluntary Suspension

Once you reach full retirement age — but before age 70 — you can ask Social Security to suspend your retirement benefit. While payments are suspended, you can earn delayed retirement credits until you restart the benefit or reach age 70.

For example, someone who claimed at 63 could suspend at 67 and allow the benefit to increase through age 70. This would not completely erase the original early-claiming reduction, but it could partially increase the future benefit.

There are important consequences. Benefits paid to certain family members on your record may also stop during the suspension, and Medicare premiums may need to be paid separately rather than deducted from Social Security.

These options can provide flexibility, but they should be viewed as backup tools — not substitutes for carefully evaluating the initial decision.

The Three Mistakes, In Short

First, optimizing Social Security instead of optimizing your complete retirement plan. A larger check isn't automatically better if obtaining it places too much pressure on your portfolio today. And preserving the portfolio isn't automatically better if it leaves you with substantially less dependable income later.

Second, making an individual decision when you're part of a household. For married couples, the higher earner's claiming age may determine how much income the surviving spouse receives for many years.

Third, letting a rule of thumb or fear make the decision. "Always claim early" and "always wait until 70" are both shortcuts. Your retirement date, life expectancy, portfolio, taxes, and family all matter.

The Right Claiming Age Isn't a Number. It's a Fit.

The right claiming age isn't automatically 62, 67, or 70. It's the age that best supports your complete retirement plan.

For some people, that means claiming earlier to reduce pressure on their investments and support the lifestyle they want while they're healthy enough to enjoy it.

For others — especially a higher-earning spouse — it means delaying to create the strongest possible lifetime and survivor income.

The goal is not to maximize your Social Security check in isolation. The goal is to use Social Security, together with everything else you've built, to create a retirement that is sustainable, flexible, and aligned with the life you actually want.

If you're approaching retirement and want to evaluate Social Security alongside your investments, taxes, spending, and survivor income, that's exactly the type of planning I do with clients. You can schedule a free consultation at masudalehrman.com/contact — I work with clients in Honolulu and virtually across the country. If you'd rather start on your own, the free Retirement Readiness Assessment is a good first step.

— Daniel Masuda Lehrman, CFP®, Founder of Masuda Lehrman Wealth. Mahalo for reading.

This article is for educational purposes only and is not personalized financial, tax, or legal advice.