Working Past 70? Here's What It Means for Your Social Security

If you're still clocking in past age 70 and calling these your peak earning years, first of all — respect. But you're probably also wondering whether all that extra hustle is actually going to pad your Social Security check. The short answer: it might, and here's why that matters.

Social Security calculates your benefit based on your 35 highest-earning years. So if you're working in your 70s and pulling in more than you did in some earlier stretch of your career, those newer, higher-income years can replace lower-earning ones in the formula — potentially nudging your monthly benefit upward. Think of it like swapping a C on your transcript for an A after you retake the class.

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The key thing to understand is that if you've already claimed Social Security and you keep working, the Social Security Administration automatically recalculates your benefit each year to account for any new earnings that crack your top-35 list. You don't have to do anything special — the SSA handles it, and any increase shows up retroactively. That's a pretty nice perk for staying in the game.

One other transition worth planning around: Medicare. If you're working beyond 70 and covered by an employer health plan, you'll want to coordinate carefully when you eventually step away and shift to Medicare. Timing that switch wrong can mean coverage gaps or unexpected penalties, so it pays — literally — to map out that handoff well in advance.

Bottom line, working deep into your 70s can be a genuine financial win if your current salary is outpacing what you earned earlier in life. It won't make a dramatic difference if your earnings are roughly consistent with your past, but every little recalculation counts when you're optimizing a fixed income. Continue reading at MarketWatch.com