Social Security is the largest guaranteed income source most Americans will ever have, and claiming decisions are nearly permanent. Getting this wrong costs tens to hundreds of thousands of dollars in lifetime income.

The Claiming Age Decision: What’s at Stake

Claim Age % of Full Retirement Age Benefit Example ($2,000 FRA) Monthly Difference vs. Age 70
62 70% $1,400 -$1,080
63 75% $1,500 -$980
64 80% $1,600 -$880
65 86.7% $1,734 -$746
66 93.3% $1,866 -$614
67 (FRA) 100% $2,000 -$480
68 108% $2,160 -$320
69 116% $2,320 -$160
70 124% $2,480

Mistake 1: Claiming at 62 When You Can Afford to Wait

Approximately 50% of American retirees claim Social Security at or within one year of the earliest eligible age of 62. Most do this despite having the resources to wait.

The correct question: Do you need the income at 62, or do you want it? If you have a portfolio that can bridge expenses for 5-8 more years, delaying Social Security to 67 or 70 is almost always the better mathematical choice.

Lifetime benefit comparison (single, $2,000 FRA benefit, dies at 85):

Claim Age Monthly Benefit Total Benefits Received to Age 85
62 $1,400 $352,800 (276 months)
67 $2,000 $432,000 (216 months)
70 $2,480 $446,400 (180 months)

For this person, delaying to 70 produces $93,600 more in total lifetime benefits than claiming at 62 — and if they live to 90, the advantage grows to over $200,000.

Mistake 2: The Working-While-Claiming Penalty Before FRA

If you claim Social Security before your Full Retirement Age and continue to work, the earnings test reduces your benefit.

2026 earnings test (approximate):

  • Below FRA: $1 withheld for every $2 earned above ~$22,320/year
  • In the year you reach FRA: $1 withheld for every $3 earned above ~$59,520

Example: You claim at 63 and earn $40,000 from part-time work. The excess earnings over $22,320 = $17,680. Half of that = $8,840 withheld in benefits. That’s $737/month reduced.

Note: Withheld benefits are recalculated and returned at FRA — but this is rarely worth the complexity.

Fix: If you plan to continue working significantly, delay claiming until at least FRA.

Mistake 3: Ignoring Spousal Benefit Optimization

Married couples have two Social Security benefits in play. The optimal claiming strategy is a joint decision, not two independent choices.

Key spousal benefit facts:

  • A spouse can claim up to 50% of the higher earner’s FRA benefit
  • The survivor (after one spouse dies) receives 100% of the deceased spouse’s actual benefit
  • For the survivor benefit to be maximized, the higher earner should delay to 70

Illustrative spousal scenario:

Earner FRA Benefit Claim at 62 Claim at 70 Survivor Benefit If Dies at 75
Higher earner $3,000 $2,100 $3,720 Spouse receives $2,100 vs. $3,720
Lower earner $1,200 $840 $1,488

The difference in survivor income from higher earner’s claiming decision: $1,620/month for the surviving spouse’s remaining lifetime.

Fix: Model both spouses’ benefits together. The common wisdom: lower earner can claim early if needed for cash flow; higher earner should delay to 70 to protect the survivor benefit.

Mistake 4: Forgetting About Taxes on Social Security

Up to 85% of Social Security benefits can be taxable as ordinary income — the percentage depends on your “combined income” (AGI + non-taxable interest + 50% of SS benefits).

Combined Income % of SS Benefits Taxable
Under $25,000 (single) / $32,000 (married) 0%
$25,000-$34,000 (single) / $32,000-$44,000 (married) Up to 50%
Over $34,000 (single) / $44,000 (married) Up to 85%

Fix: Coordinate Roth conversions, IRA withdrawals, and Social Security claiming to manage your combined income in the first years of retirement.

Mistake 5: Missing the Break-Even Analysis

The Social Security break-even calculation is simple but widely skipped.

Break-even between claiming at 62 vs. 70 (example, $2,000 FRA benefit):

Year Cumulative Benefits at 62 ($1,400/month) Cumulative Benefits at 70 ($2,480/month)
Age 70 $134,400 (8 years) $0
Age 75 $218,400 $148,800 (5 years)
Age 80 $302,400 $446,400
Age 82 $335,520 $595,200… (break-even at ~80-81)

After approximately age 80-81, the delayed claimer has received more in cumulative lifetime benefits and continues to receive more each month for the rest of their life.

Given that the median life expectancy for a 65-year-old is roughly 85+, most people will live past their break-even point.

Related: Financial Mistakes in Your 60s | Pre-Retirement Mistakes | Retirement Timing Mistakes | Medicare Mistakes