For most Americans, Social Security is the backbone of retirement income. Yet despite its importance, many people unknowingly make costly mistakes that reduce their monthly benefits, trigger unexpected taxes, or create long-term financial strain. Social Security may seem straightforward on the surface, but under the hood, it’s a complex system filled with rules, deadlines, and exceptions that can trip up even the savviest retirees.
You may think you’re playing it safe or “doing what everyone else does,” but that’s exactly how costly oversights happen. From claiming too early to underestimating the impact of working in retirement, here are seven mistakes you could be making with your Social Security benefits, without even realizing it.
Mistake #1: Claiming Benefits Too Early
It’s tempting to start collecting Social Security as soon as you’re eligible at age 62, especially if you’re no longer working. But claiming early means permanently reduced benefits. For every year you claim before your full retirement age (which ranges from 66 to 67, depending on your birth year), your monthly check can be reduced by up to 30%.
This smaller amount doesn’t just affect you—it also affects survivor benefits for your spouse if you pass away. Unless you truly need the income right away, waiting until full retirement age, or even delaying until 70, can substantially increase your lifetime benefits.
Mistake #2: Underestimating the Earnings Limit
If you claim Social Security before your full retirement age and continue working, your benefits may be reduced if your earnings exceed a certain threshold. In 2025, that limit is $22,320. For every $2 you earn over the limit, $1 is withheld from your benefits.
Many people mistakenly believe they can “double dip” by working full-time and collecting benefits early. But if your income is too high, your payments could be slashed, only to be recalculated later. While the withheld amount is eventually credited back starting at full retirement age, the short-term loss can be surprising and financially inconvenient.
Mistake #3: Ignoring Spousal and Survivor Benefits
Spousal benefits are one of the most misunderstood aspects of Social Security. If you’re married, divorced, or widowed, you may be eligible to receive benefits based on your spouse’s (or former spouse’s) work record—even if you never worked yourself.
Many retirees leave money on the table by not coordinating their benefit strategies as a couple. For example, in a two-income household, it may be better for the lower earner to claim earlier while the higher earner delays to maximize survivor benefits. Knowing how spousal and survivor rules work can make a significant difference in your household income.
Mistake #4: Assuming Benefits Aren’t Taxable
Yes, Social Security benefits can be taxed—up to 85% of them, depending on your total income. This surprises many retirees who thought their Social Security payments would be tax-free.
If your “combined income” (which includes your adjusted gross income, nontaxable interest, and half of your Social Security benefits) exceeds certain thresholds—$25,000 for individuals or $32,000 for couples—you could owe taxes on a large portion of your benefits. Poor planning can push you into a higher tax bracket, so it’s important to account for this in your retirement income strategy.
Mistake #5: Not Reviewing Your Earnings Record
Your Social Security benefit is based on your top 35 years of earnings. But what if those earnings were reported incorrectly—or not at all?
The Social Security Administration doesn’t automatically verify your income. It’s up to you to review your earnings record and report any errors. If you don’t catch them in time, you could lose out on thousands in lifetime benefits. Make a habit of checking your annual Social Security statement, available online, to confirm that your work history is accurate.
Mistake #6: Thinking You’re “Too Rich” to Care
Even high earners sometimes underestimate the importance of Social Security. They may assume their retirement accounts will cover everything, so they claim early or make uninformed decisions. But with people living longer and market volatility a constant concern, Social Security offers something that few other sources of income do: a guaranteed, inflation-adjusted payment for life.
Maximizing this benefit isn’t just for those with limited savings. It’s smart risk management for any retirement plan. Walking away from higher lifetime benefits just because you can afford to feels like leaving money on the table.
Mistake #7: Going It Alone Without Professional Guidance
Social Security may be a government program, but it requires personalized strategy. Your ideal claiming decision depends on your health, income needs, marital status, and long-term goals. Yet many retirees make decisions based on hearsay, outdated rules, or a gut feeling.
Speaking with a financial advisor, especially one who understands Social Security optimization, can help you avoid costly errors. A one-size-fits-all approach simply doesn’t work here, and even small tweaks to your plan can add up to significant gains over time.
Final Thoughts: The Cost of Getting It Wrong
Social Security may feel like just another checkbox on your retirement to-do list, but it’s a critical part of your financial foundation. Making even one of these common mistakes can reduce your benefits, increase your taxes, or leave your spouse with less income in the future.
Fortunately, these errors are preventable. With the right knowledge and a bit of planning, you can maximize what you’ve earned, protect your household, and ensure your benefits work for you, not against you.
Have you already claimed Social Security, or are you still weighing your options? What factors are shaping your decision?
Read More:
9 Social Security Assumptions That Will Cost You Thousands
Why Social Security Won’t Be Enough, Even If You Think You’re Ready
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