Social Security at 62, 67 or 70? Here's the Math

The headline tradeoff

Claiming at 62 locks in roughly 70% of your full benefit. Claiming at 67 (your "full retirement age" or FRA if you were born 1960 or later) gets you 100%. Claiming at 70 gets you 124%. For someone with a full-retirement-age (FRA) benefit of $2,500/month, that's the difference between $1,750, $2,500, and $3,100 — every month, for life, adjusted for inflation each year.

The break-even math

The Social Security Administration designed claiming ages so that, on average life expectancy, you collect roughly the same total dollars whichever age you pick. The break-even point between claiming at 62 vs. 67 is around age 78. The break-even between 67 vs. 70 is around age 82–83. Live longer than that and waiting pays. Die earlier and claiming early pays.

But "average life expectancy" hides huge variation. A healthy 65-year-old American woman today has a 50% chance of reaching age 88. A 65-year-old man has a 50% chance of reaching age 85. The longer your family history of longevity, the more delaying pays.

When claiming at 62 makes sense

• You have a serious health condition with a shortened life expectancy.
• You're out of work involuntarily and have no other income.
• You're the lower-earning spouse and your partner is delaying their (much larger) benefit to 70.
• You'd otherwise need to draw down investments in a market downturn to live.

When claiming at FRA (66–67) makes sense

• You're working part-time. Before FRA, Social Security claws back $1 for every $2 you earn above ~$22,000. At FRA the earnings test disappears.
• You need the income but not desperately, and you want a balanced compromise.

When delaying to 70 makes sense

• You expect to live into your 80s or beyond (family history or current health).
• You're the higher-earning spouse in a couple — your benefit becomes the survivor benefit for whoever lives longer.
• You have other assets to live on until 70 (savings, IRA, pension, part-time work).
• You want inflation-protected longevity insurance — no annuity on the market matches Social Security's combination of guaranteed lifetime income, COLA adjustments, and U.S. government backing.

The spousal/survivor benefit angle

For married couples, the higher earner's benefit also becomes the surviving spouse's check after one partner dies. Delaying the higher earner's benefit to 70 raises both the joint income today and the survivor's income for potentially 10–20 more years after the first death. This is the single most powerful reason couples delay.

Working while collecting before FRA

The earnings test is the surprise that catches early claimers off guard:

• Before FRA: $1 withheld for every $2 you earn above $22,320 (2026 figure).
• Year you reach FRA: $1 for every $3 above $59,520.
• After FRA: no limit.

The withheld benefits aren't lost — they're added back to your benefit later at FRA. But cashflow-wise, working a $60,000 part-time job while claiming at 62 might mean zero monthly check during peak earning years.

How taxes work

Up to 85% of Social Security benefits are taxable federally once your combined income (AGI + nontaxable interest + half of Social Security) crosses $34,000 single / $44,000 joint. Many retirees don't realize the bracket isn't indexed for inflation — it was set in 1993 and hasn't moved.

Bottom line

Most healthy people in a couple should have the higher earner delay to 70 if at all possible. The lower earner can often claim at FRA or earlier without giving up much. Run your own numbers at ssa.gov's free calculator — it's the single most important retirement decision you'll make.