Social Security at 62 vs 70 — The Math That Flips Conventional Wisdom
Social Security at 62 vs 70 — The Math That Flips Conventional Wisdom
$2,100 a month. That's what Social Security pays at age 62. Wait until 70, and you get a check that's roughly 24% larger. Most financial advisors tell you to wait.
What that advice leaves out: during those eight years, your money does absolutely nothing.
I ran both scenarios under identical conditions. In both cases, the person is already supporting themselves until 70 without Social Security — through savings, part-time work, or existing investment income. The Social Security payment isn't replacing a budget. It's pure extra cash flow.
Scenario A: Claim at 62, Invest Everything
Take the $2,100 monthly at 62 and invest every dollar into the S&P 500. Ninety-six contributions over eight years. No day trading, no complicated strategy — just steady contributions to a low-cost index fund like VOO.
| Return Assumption | Accumulated Value at 70 |
|---|---|
| S&P 500 historical average (10%) | ~$306,980 |
| VOO average since inception (14.82%) | ~$382,416 |
At 70, you're still collecting that same $2,100 Social Security check monthly. But now you have an investment portfolio working alongside it.
At 10% growth, $306,980 generates roughly $2,558 per month in equivalent growth. Combined with Social Security: $4,658 monthly. The $306,980 principal stays intact.
At VOO's 14.82%: roughly $4,723 per month in growth. Combined total: $6,823 monthly. Principal of $382,416 remains untouched.
Scenario B: Wait Until 70
Eight years of patience earns a permanently larger monthly check — about 24% above the age-62 amount. Zero market risk. No investment decisions required. Completely passive.
This is the path most financial planners recommend. The break-even point typically falls in the early 80s. The longer you live past 80, the more the waiting strategy pays off.
Head-to-Head at Age 70
| Factor | Claim at 62 + Invest (10%) | Claim at 62 + Invest (14.82%) | Wait Until 70 |
|---|---|---|---|
| Monthly SS check | $2,100 | $2,100 | ~$2,604 (24%↑) |
| Investment growth/mo | ~$2,558 | ~$4,723 | $0 |
| Combined monthly power | ~$4,658 | ~$6,823 | ~$2,604 |
| Principal owned | $306,980 | $382,416 | $0 |
The numbers seem to make the choice obvious. But real life doesn't run on spreadsheets alone.
The Real Risks on Each Side
The risks of waiting tend to be underestimated. You forfeit eight years of cash flow. Congress could raise the claiming age or cut benefits before you get there. And if you die earlier than actuarial tables predict, the system keeps the difference — your family doesn't.
The risks of claiming early and investing are equally real. A poor eight-year stretch in the market breaks the scenario. Starting to invest right before a downturn tests psychological resolve hard. And this isn't a "do nothing" strategy — you actually have to execute.
This comes down to "guaranteed bigger check" versus "building assets you control." There's no universal right answer — it depends on your financial situation and willingness to invest actively.
FAQ
Q: Are there tax penalties for claiming at 62? A: If you have earned income, up to 85% of Social Security benefits can become taxable once individual income exceeds $25,000. Any investment comparison should use after-tax returns for accuracy.
Q: What if the market goes sideways for eight years? A: An eight-year period with zero S&P 500 returns is historically rare but not impossible. In that case, you'd have only the invested principal (~$201,600), and the wait-until-70 strategy wins clearly.
Q: What about a hybrid strategy for couples? A: Having the higher earner delay to 70 while the lower earner claims at 62 and invests is a well-known hybrid approach. It maximizes survivor benefits while capturing compounding upside.
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