‘We have longevity in the family’: My sister is turning 67. Should she wait until 70 to claim Social Security?
If your sister is healthy, expects to live into her 80s or beyond, and doesn’t urgently need the income, waiting until 70 is often a strong choice. But the best answer depends on a handful of personal factors—health, marital status, taxes, and how she’ll fund spending if she waits. Here’s how to decide, with concrete numbers and practical considerations.
How Social Security claiming works between 67 and 70
– Full Retirement Age (FRA): For someone turning 67 in 2026, FRA is 66 and 10 months. She’s already past FRA.
– Delayed credits: Benefits grow by 8% per year (two-thirds of 1% per month) for each month she waits after FRA until age 70. From age 67 to 70, that’s a 24% increase, on top of any cost-of-living adjustments (COLAs).
– COLAs: Whether she claims now or later, COLAs still apply. If she waits, both the underlying benefit and future checks reflect those adjustments.
– Flexibility: It’s not all-or-nothing. She can start any month between 67 and 70. Each month she waits adds roughly 0.667%.
The break-even math in plain English
– Example: If her benefit at 67 would be $2,500 per month, waiting until 70 would pay about $3,100 (24% more).
– She would forgo roughly $90,000 in payments over those three years (36 months × $2,500).
– The $600/month higher check at 70 ($3,100 − $2,500) takes about 12.5 years to make up the forgone payments—roughly to age 82.5. Live longer than that and waiting usually pays off; pass away earlier and claiming at 67 would likely have been better.
– Taxes, investment returns, and COLAs move the break-even a bit, but age 81–84 is a good rule of thumb.
When waiting to 70 typically makes sense
– Strong longevity prospects and good current health. A 67-year-old woman has a meaningful chance of living into her late 80s or 90s, so a larger, inflation-adjusted benefit is valuable “longevity insurance.”
– She doesn’t need the income to maintain her lifestyle now and can bridge with other savings.
– She’s single or the higher earner in a couple. Her higher age-70 benefit also boosts a potential survivor benefit for a spouse (the survivor can receive the decedent’s actual benefit, including delayed credits).
– She’s doing tax planning. Delaying benefits can create “gap years” (67–70) with lower taxable income, which can be ideal for Roth conversions, drawing down large pre-tax balances before RMDs, or managing Medicare IRMAA brackets later.
When claiming sooner can be smarter
– Health concerns that point to a shorter life expectancy.
– Cash-flow needs now, with limited savings to bridge the gap.
– A spouse who needs spousal benefits that are unlocked only when she files (note: spousal benefits top out at 50% of the worker’s primary insurance amount and don’t earn delayed credits). If the spouse has little to no benefit of their own, the household may come out ahead if she files earlier to start spousal benefits sooner.
– She wants to reduce withdrawals from volatile investments in a bad market (sequence-of-returns risk). In some situations, starting Social Security can let her leave the portfolio alone.
Special marital and survivor considerations
– Married: If she’s the higher earner, delaying to 70 can materially increase the survivor benefit for a spouse. If she’s the lower earner, the household optimization may be for her to file earlier while the higher earner delays to 70.
– Widowed: Unique rules allow a widow(er) to claim a survivor benefit first and switch to their own benefit at 70 (or vice versa), whichever is larger at that point. If she’s widowed, this flexibility often makes delaying her own benefit to 70 highly attractive while receiving survivor benefits now.
– Divorced (10+ year marriage, currently unmarried): Deemed filing rules mean she generally can’t take just a divorced-spouse benefit while letting her own grow, unless she was born before 1954 (she wasn’t). Survivor rules still apply if an ex-spouse is deceased.
Working and the earnings test
– After FRA, the earnings test no longer withholds Social Security benefits. So if she continues to work at 67+, her benefits won’t be reduced by earnings. However, wages can still affect taxes and Medicare IRMAA.
Taxes, Medicare, and planning opportunities
– Up to 85% of Social Security can be taxable depending on “provisional income.” Delaying benefits can keep provisional income lower in the near term while she does Roth conversions or capital-gains harvesting at favorable rates.
– RMDs: For someone born in 1959, required minimum distributions generally begin at age 73. Using ages 67–70 (and 70–73) strategically can lower future RMDs and lifetime taxes.
– Medicare: Most enroll at 65. If she delays Social Security past 65, she’ll pay Medicare Part B premiums directly (instead of having them deducted from a Social Security check).
– QCDs: After age 70½, qualified charitable distributions from IRAs can satisfy RMDs later and reduce taxable income—useful once Social Security is in pay status.
Investment alternatives and risk
– “I’ll claim early and invest the checks” sounds appealing but requires taking market risk to try to beat the implicit, inflation-adjusted lifetime payout increase from delaying. For a longevity hedge, the guaranteed, inflation-adjusted nature of Social Security (with survivor protection) is hard to replicate in the private market.
Practical tips if she’s leaning toward waiting
– She can pick any start month. Splitting the difference and starting at, say, 68½ or 69 may balance peace of mind with growth.
– Build a bridge plan. Map out which accounts will fund spending until 70 and how that affects taxes. Consider partial Roth conversions in low-income years.
– Remember retroactive options. If she applies after FRA, she can request up to six months of retroactive benefits, which slightly hedges against second thoughts (but it reduces delayed credits accordingly).
– Coordinate as a household. If married, run the numbers jointly.
– Use a good calculator. The SSA’s estimator, and independent tools such as Open Social Security, can model claiming ages with longevity assumptions and survivor benefits.
– File ahead of time. Benefits aren’t automatic at 70; apply a couple of months before the desired start month.
Bottom line
Given “longevity in the family,” waiting to 70 often maximizes lifetime, inflation-protected income and strengthens survivor benefits—especially if she doesn’t need the cash now and is healthy. The simple break-even sits around age 82–83 when comparing starting at 67 vs. 70. If personal health, cash needs, or a spouse’s spousal benefit argue otherwise, starting sooner can be rational.
Run the numbers with her exact benefit estimates, health outlook, and tax situation. For many healthy 67-year-olds with long-lived relatives, delaying to 70 is a compelling default—backed by math and by the valuable insurance it provides against outliving savings. This is general education; a quick session with a fiduciary planner or an in-depth calculator can confirm the best fit for her.
