9 Social Security and Medicare Decisions That Cost Couples the Most
Most articles about Social Security treat it like a solo sport. One person, one benefit, one claiming age. Run the break-even math. Pick a number. Done.
That’s not how it works for married couples and the gap between thinking individually and thinking as a household can cost you more than six figures over a retirement. A study by United Income found that the average retired household leaves around $111,000 in lifetime Social Security income on the table by claiming at the wrong age. That number already stings. What most articles don’t tell you is that many of those dollars aren’t lost at claiming time, they’re lost years earlier, through decisions one spouse makes without fully understanding how it ripples into what the other spouse will receive, sometimes decades later.
This piece covers the nine decisions that do the most damage, with the 2026 numbers you need to understand why. Read it together. The decisions on this list outlive the person who makes them.
Married couples have a fundamentally different Social Security and Medicare situation than single retirees. The higher earner’s claiming age sets the floor for the surviving spouse’s income, potentially for life. The lower earner’s Medicare enrollment timing can trigger a permanent premium penalty that has nothing to do with Social Security. And income decisions made two years before Medicare enrollment determine what you’ll pay in surcharges once you’re enrolled. Treating Social Security and Medicare as a coordinated household system, not two separate individual decisions, is where the real money is.
1
The Higher Earner Claims Early, Locking In the Survivor Benefit Forever
This is the most expensive mistake on the list, and it’s made in plain sight.
When the higher-earning spouse claims Social Security early, say, at 62 instead of waiting until 70, they permanently reduce their own monthly benefit. For someone whose benefit at full retirement age (FRA) would be $2,000 per month, claiming at 62 cuts that to roughly $1,400. Waiting until 70 grows it to roughly $2,480. That’s a difference of more than $1,000 per month from the same earnings record, depending only on when the claim is filed.
Here’s what most couples don’t consider until it’s too late: when the higher earner dies, the surviving spouse inherits that benefit. Not their own, whichever is higher. If the higher earner claimed at 62 and locked in $1,400, that’s what the widow or widower will receive for the rest of their life. If the higher earner had waited until 70 and built that benefit to $2,480, that’s what survives. The difference, $1,080 per month, compounds for potentially 15 to 20 years of a surviving spouse’s life.
The higher earner’s claiming decision is, in effect, a life insurance decision for the surviving spouse. Model both scenarios before you file
Source: SSA.gov — Retirement Age and Benefit Reduction
2
Both Spouses Claim at the Same Age Without Running the Household Math
A lot of couples coordinate claiming without actually running the numbers. They assume the lower earner should claim early to bring in household income while the higher earner waits. Sometimes that’s right. Often it’s not.
The most commonly overlooked point: spousal benefits don’t grow past full retirement age. Unlike your own retirement benefit, which increases roughly 8% per year for every year you delay past FRA up to age 70, a spousal benefit tops out at 50% of your spouse’s primary insurance amount (PIA) the moment you reach your own FRA. There’s no reward for a lower earner waiting past FRA to claim a spousal benefit.
This changes the math entirely. If the lower earner’s own benefit at 70 is higher than the spousal benefit, it may make sense for them to delay, even if it means the household gets no Social Security income for a few years. If the spousal benefit is higher than their own, they should claim it at FRA, not wait. Running the wrong strategy here can mean years of reduced income or years of unnecessarily forgone benefit growth.
Get both benefit estimates from SSA.gov’s my Social Security portal, compare them against the 50% spousal ceiling, and model three or four household scenarios before either of you files.
Source: Vanguard — Social Security Strategies for Married Couples
3
Ignoring Deemed Filing, the Rule That Eliminated “Claim One, Delay the Other”
Before 2016, couples used a popular strategy: one spouse would file for spousal benefits at FRA while letting their own retirement benefit grow until 70. That loophole is gone.
Under current deemed filing rules, when you file for Social Security benefits, you’re deemed to have filed for every benefit you’re eligible for at that moment. You can’t collect just the spousal benefit and let your own retirement benefit grow. Social Security will pay you the higher of the two, and that’s that.
The only major exception is survivor benefits. If your spouse dies, you can claim survivor benefits independently of your own retirement benefit, meaning a surviving spouse can start survivor benefits at 60 (or as early as 50 if disabled) and let their own retirement benefit grow until 70. That flexibility still exists, and it’s genuinely valuable. But the old “claim one, delay the other” strategy for living spouses is gone, and couples who don’t know this sometimes make claiming decisions based on a rule that no longer applies.
Make sure any Social Security advice you’re following is post-2016. Strategies that predate the Bipartisan Budget Act of 2015 may be leading you in the wrong direction.
Source: SSA.gov — Filing Rules for Retirement and Spouses Benefits
“Only 4% of retirees claim Social Security at their optimal age. The average household cost of that timing mistake: $111,000 in foregone lifetime income.”
— United Income study, via The Motley Fool
4
The Lower Earner Claims Before FRA Without Understanding the Permanent Reduction
Claiming spousal or retirement benefits before FRA results in a permanent reduction, not a temporary one. There’s no restoration when you turn 67. What you lock in at 62 stays locked in for life.
If the lower earner claims a spousal benefit at 62 instead of FRA, their benefit can be reduced from the 50% maximum down to as low as 32.5% of the higher earner’s PIA. On a higher earner with a $2,500 FRA benefit, that’s the difference between $1,250/month and $812/month, forever.
This is the version of the problem that gets less attention: couples focus on whether the higher earner should delay, then treat the lower earner’s claiming decision as an afterthought. But the lower earner’s choice is permanent too, and if they’re going to be the surviving spouse, statistically more likely to be the wife in a heterosexual couple, their own benefit matters enormously in the later years.
Source: SSA.gov — Benefits for Spouses
5
Delaying Social Security Without Separately Enrolling in Medicare Part B
This one is a genuine trap, and it catches more people than you’d expect.
Medicare eligibility begins at 65. Social Security retirement benefits can be delayed until 70. Most people know both of those facts independently. What they don’t always connect is that delaying Social Security does not automatically delay Medicare enrollment, and missing the Part B enrollment window triggers a permanent penalty.
The penalty is 10% of the standard Part B premium for every full 12-month period you were eligible but didn’t enroll, and it lasts for life. In 2026, the standard Part B premium is $202.90 per month. A two-year delay adds a permanent 20% surcharge, roughly $40 more per month, every month, for the rest of your life. A five-year delay adds 50%, or about $101 extra per month, permanently.
The exception: if you’re covered by an employer group health plan through active employment (yours or your spouse’s) at a company with 20 or more employees, you can delay Part B without penalty. COBRA does not count. Retiree health coverage does not count. The coverage must be through active current employment.
If you’re planning to delay Social Security past 65, add a separate calendar reminder to enroll in Medicare Part B no later than your 65th birthday, unless you have qualifying employer coverage.
Source: Medicare.gov — Avoid Late Enrollment Penalties
6
Not Knowing How the Earnings Test Can Claw Back Benefits Before FRA
If you claim Social Security benefits before your full retirement age and continue working, Social Security can reduce your monthly check, sometimes to zero.
In 2026, if you’re under FRA for the entire year, Social Security withholds $1 for every $2 you earn above $24,480. In the year you reach FRA, the threshold rises to $65,160, and the withholding rate drops to $1 for every $3 earned above that limit. Once you hit your full retirement age, the earnings test disappears entirely.
The good news: the withheld benefits aren’t permanently gone. Social Security recalculates your benefit upward at FRA to account for months when benefits were withheld. But the recalculation is partial, the timing is complex, and couples who plan around a specific monthly income often get a nasty surprise when one spouse’s check is reduced because they kept working.
If either spouse plans to work after claiming, run the earnings test math before you file. The SSA’s Retirement Earnings Test Calculator does the work for you.
Source: SSA.gov — Receiving Benefits While Working
7
Ignoring the IRMAA Surcharge That Punishes High-Income Retirees on Medicare
Medicare isn’t a flat premium. If your household income in retirement crosses certain thresholds, you pay more, sometimes substantially more and most couples find out about it for the first time when the bill arrives.
The Income-Related Monthly Adjustment Amount (IRMAA) is a surcharge on Medicare Part B and Part D premiums based on your modified adjusted gross income (MAGI) from two years prior. Your 2026 Medicare premiums are based on your 2024 tax return. The standard 2026 Part B premium is $202.90/month. For couples filing jointly with income above $218,000, that premium jumps to $284.10/month per person. At the highest income tier (above $750,000 joint), it reaches $689.90/month per person.
| Joint MAGI (2024) | Monthly Part B Premium (per person) |
|---|---|
| Up to $218,000 | $202.90 (standard) |
| $218,001 – $274,000 | $284.10 |
| $274,001 – $344,000 | $365.30 |
| $344,001 – $412,000 | $446.50 |
| $412,001 – $750,000 | $527.50 |
| Above $750,000 | $689.90 |
Two things catch couples off guard. First, it’s a cliff structure: one dollar over a threshold triggers the full surcharge for that bracket. Second, income sources that feel “invisible”, like tax-exempt municipal bond interest, count toward MAGI for IRMAA purposes. A large IRA withdrawal, a Roth conversion, or a capital gain from selling a home can push a couple over a threshold in a single year and cost them thousands in extra premiums two years later.
Plan major income events with the two-year IRMAA lookback in mind. If you’ve had a genuine income drop (retirement, job loss, divorce), you can appeal using Form SSA-44.
Source: Kiplinger — Medicare Premiums 2026: IRMAA Brackets and Surcharges · CMS — 2026 Medicare Parts A & B Premiums
8
Treating the Survivor Benefit as an Afterthought Instead of a Planning Pillar
Women statistically outlive men. For heterosexual married couples, that means the higher earner is more often the husband and the surviving spouse is more often the wife, with a longer retirement ahead of her.
When the higher-earning spouse dies, the survivor receives whichever is greater: their own benefit, or 100% of the deceased spouse’s benefit. Not 50%, the full amount. Survivor benefits are available as early as age 60 (reduced), or at 100% if the survivor waits until their FRA for survivor benefits. A surviving spouse can also claim survivor benefits first, then switch to their own retirement benefit later if it grows to be larger, a strategy that’s still available because deemed filing does not apply to survivor benefits.
Here’s what this all means together: The higher earner’s decision to claim at 62 versus 70 isn’t just about their own monthly check. It’s about what the surviving spouse will live on for potentially 15 to 25 years. A higher earner who delays until 70 and dies at 75 may feel like they “lost.” Their surviving spouse, who receives that elevated benefit for the next 20 years, most certainly did not.
Run the survivor scenario explicitly. Ask: if the higher earner dies at 75, what does the survivor receive under each claiming age? The answer often changes everything.
Source: SSA.gov — What You Could Get from Survivor Benefits
9
Making Social Security and Medicare Decisions in Isolation Instead of as a System
Every decision on this list interacts with the others. Claiming timing affects IRMAA exposure. IRMAA affects whether it makes sense to do Roth conversions early. Roth conversions affect Medicare premiums two years out. The Part B late enrollment penalty stacks on top of any IRMAA surcharge you’re already paying. The survivor benefit depends on the higher earner’s claiming age, which depends partly on whether the lower earner’s spousal benefit or their own benefit is more valuable.
None of these is a standalone question. A couple approaching 65 isn’t facing nine separate decisions they’re facing one interconnected household strategy. And yet the way most people encounter this information is piecemeal: a Social Security article here, a Medicare enrollment FAQ there, a Roth conversion tip in a different newsletter. The pieces don’t fit together because they were never written together.
This is where the difference between a calculator and a conversation becomes real. A Social Security break-even calculator tells you nothing about your IRMAA exposure or your spouse’s survivor math. Running the household as a system, with a view of income sources, tax implications, and both spouses’ life expectancy, is what produces a strategy rather than a guess.
Common Questions
When should the higher-earning spouse claim Social Security if we want to maximize the survivor benefit?
In most cases, delaying the higher earner’s benefit as close to age 70 as possible produces the largest survivor benefit for the remaining spouse. The higher earner’s benefit grows roughly 8% per year from FRA to 70, and the survivor receives 100% of whatever benefit the higher earner locked in. The tradeoff is years of foregone income before 70, which couples sometimes bridge using the lower earner’s benefit or portfolio withdrawals. Whether that tradeoff makes sense depends on health, longevity expectations, and other income sources.
What is the Medicare Part B late enrollment penalty in 2026?
The penalty is 10% of the standard Part B premium for every full 12-month period you were eligible but didn’t enroll. In 2026, the standard premium is $202.90 per month, so each year of delay adds a permanent $20.29/month to your premium for life. The exception: if you’re covered by a qualifying employer group health plan through active employment (yours or your spouse’s) at a company with 20 or more employees, you can delay Part B enrollment without penalty until that coverage ends.
Does delaying Social Security past 65 mean we don’t have to enroll in Medicare?
No. Medicare eligibility starts at 65 regardless of when you plan to claim Social Security. If you’re not covered by a qualifying employer health plan, you need to enroll in Medicare Part B during your Initial Enrollment Period (a seven-month window surrounding your 65th birthday) or face a permanent premium penalty. Delaying Social Security and delaying Medicare enrollment are completely separate decisions and confusing them is one of the most common and costly mistakes pre-retirees make.
What is IRMAA and how does it affect both spouses?
IRMAA is a Medicare premium surcharge for higher-income beneficiaries, applied to both Part B and Part D premiums. It’s based on your household’s modified adjusted gross income from two years prior. In 2026, it kicks in for couples filing jointly with income above $218,000. Each spouse on Medicare pays their own surcharge separately, so a couple in the first IRMAA tier pays roughly $81 extra per person per month, or about $1,948 more per year as a couple. Income planning in the years before and after Medicare enrollment, including timing Roth conversions carefully, can reduce or eliminate this surcharge.
Can a surviving spouse collect their own Social Security benefit and the survivor benefit at the same time?
No, you receive whichever is greater, not both. However, a surviving spouse has real strategic flexibility: they can claim survivor benefits as early as age 60 (at a reduced amount) and let their own retirement benefit continue growing until 70, then switch to their own higher benefit. This is one of the few remaining strategies that allows a spouse to collect one benefit while another grows, because deemed filing does not apply to survivor benefits.
Rules of Thumb Only Get You So Far
The math above is real, but how it applies to your household depends on both of your health histories, your other income sources, whether either of you is still working, and what your tax picture looks like in retirement. A couple where both spouses are 63, one just retired, and the other is still earning a salary faces very different tradeoffs than a couple where one spouse is 68 and already collecting. If you’d like to talk through how any of this fits your specific situation, the team at Madison Partners is happy to have that conversation, no calculators required, just a real discussion about your numbers.
This content is for educational purposes only and should not be considered financial, tax, legal, or investment advice. Individual circumstances vary, and readers should consult with a qualified financial advisor, tax professional, or attorney before making decisions based on this information. Madison Partners does not guarantee the accuracy of third-party data cited herein.
