The 7 biggest Social Security mistakes

1. Filing at 62 by default

Many people file for Social Security at 62, and some later say they regret claiming early. Claiming at 62 with a full retirement age of 67 gives you about 70% of your full benefit, for life, apart from the narrow exceptions covered at the end of this piece.⁵

Sometimes 62 is right. But it should be a decision you made, not the default that happened because nobody showed you the math.

2. Never checking your earnings record

Your benefit is calculated from your highest 35 years of earnings.⁶ If one of those 35 years is missing or understated — a name change, an employer error, a mis-keyed digit — your benefit can be lower for life. An error in a year outside your top 35 does not change the calculation.

3. Forgetting what your claim does to your spouse

When one spouse dies, the survivor keeps the larger of the two benefits — the smaller one stops. If you are the higher earner, your claiming age sets what your spouse lives on for the rest of their life.

People run their own break-even math and never ask the second question: what does this leave behind?

4. Assuming withheld benefits are lost

If you work before full retirement age and earn over the limit, SSA withholds part of your benefit — and people conclude they were punished for working. They were not. At full retirement age SSA recalculates your benefit to credit the months it withheld, which raises your monthly check going forward. It is an adjustment to the monthly amount, not a refund of every dollar withheld.⁸

5. Not knowing you qualify on an ex-spouse

If you were married at least 10 years, are currently unmarried, and are 62 or older, you may be able to claim up to 50% of your ex-spouse's full retirement age benefit.² It does not reduce their check or their new spouse's check.

People go years without claiming this simply because nobody told them it existed.

6. Ignoring taxes until April

Up to 85% of your benefits can be federally taxable depending on your combined income (the IRS term for what is often called provisional income) — and the thresholds are not adjusted for inflation.⁹ A large IRA withdrawal or Roth conversion in the wrong year can trigger a tax bill nobody warned you about.

7. Claiming without checking Medicare timing

Social Security and Medicare are separate decisions with separate deadlines. Miss a Medicare enrollment window and the late penalty is not a one-time fee — it is added to your premium for as long as you have coverage.

What if you already filed?

Three doors stay open longer than most people realize:

• Withdrawal — within 12 months of first becoming entitled to benefits, you can withdraw the application once, in writing, repay everything paid out (including benefits paid to family members on your record and any Medicare premiums withheld), and start over.¹⁰
• Suspension — at full retirement age you can suspend benefits and earn delayed credits until 70. While suspended, benefits paid to family members on your record generally stop too (a divorced spouse's do not), you cannot receive SSI, and you must pay your Medicare Part B premium directly.¹¹
• Correcting your record — an earnings error can often still be corrected under SSA's exceptions to the time limit, and the correction applies going forward.⁷