Healthcare Before Medicare: How to Cover the 10-Year Gap in 2026

Retire at 55 and you have a 10-year gap before Medicare at 65. That gap isn't a footnote — for many early retirees it is the biggest line item in the first decade. Healthcare costs for a couple in their late 50s routinely run $800–$2,000 per month, and which option you choose — and how you arrange your income around it — can shift that number by five figures per year.

The three real options are COBRA, ACA marketplace coverage, and staying attached to employer coverage through part-time work. A fourth option — going uninsured — isn't worth the space it would take to dismiss.

COBRA: familiar coverage, brutal price tag

When you leave a job, COBRA lets you stay on the employer's plan for up to 18 months. The coverage is identical to what you had before. The cost is not: you pay 102% of the full premium — your share and the employer's share, plus a 2% administrative fee.

For a 55-year-old, that typically runs $550–$700/month for individual coverage in 2026, and well over $1,500/month for family coverage. Those aren't the premiums you saw on your pay stub; those are what your employer was actually paying on your behalf.

COBRA's use case is the transition window. It buys you 18 months while you find a long-term solution, and it's the right call when:

• You've hit your deductible late in the calendar year and want to preserve that sunk cost
• You have an in-network specialist you need to keep seeing
• You expect your coverage gap to be short — a couple of months between retirement and a new plan

For the full decade before Medicare, COBRA is a bridge, not a strategy. It expires at 18 months and then you're back to the same decision, with no employer subsidy remaining.

ACA marketplace: subsidized, but know the cliff

For most early retirees, the ACA marketplace is the primary long-term tool — and in 2026 the rules changed significantly.

The enhanced subsidies from the Inflation Reduction Act expired January 1, 2026. The 400% Federal Poverty Level cliff is back. That means:

• A single person with Modified Adjusted Gross Income (MAGI) up to $63,840 (400% of the 2026 FPL of $15,960) qualifies for subsidies
• One dollar over that line: $0 in subsidies. The full unsubsidized premium — which for a 55-year-old on a benchmark Silver plan averages $700–$1,000+/month depending on state and county — hits immediately
• For a couple, the 400% FPL ceiling is $86,560

Below the cliff, subsidies are real and meaningful. A hypothetical single early retiree managing MAGI around $45,000 (roughly 282% FPL) in 2026 might pay $250–$350/month for a Silver plan after subsidies, instead of $800+ unsubsidized.

The detail that changes everything: ACA subsidies are based on income you show, not assets you have. A retiree with $1.5 million in a 401(k) who controls withdrawals to $50,000/year gets the same subsidy as someone who actually earns $50,000. That's not a loophole; it's how the statute works. But it requires deliberate planning — every Roth conversion, capital gain realization, and traditional withdrawal counts toward MAGI.

The ACA subsidy calculator lets you run this directly: input your projected income, household size, and age to see your estimated premium before and after subsidy.

The cliff in practice: a worked example

Take a hypothetical couple — call them the Garcias — who both retire at 57. They have $1.2 million in traditional IRAs and $180,000 in a taxable brokerage. Their plan: withdraw $75,000/year ($62,000 for spending, $13,000 to fund Roth conversions that will reduce future required minimum distributions).

At $75,000 MAGI for a couple, they're well under the $86,560 ceiling. After subsidies, their combined ACA premium might run $480–$600/month for Silver coverage — comparable to a single COBRA rate, for two people.

Now suppose the Garcias aren't careful in year two and realize a $22,000 capital gain selling taxable brokerage positions. Their MAGI jumps to $97,000. They're 12% over the cliff. Their subsidy disappears entirely. The same Silver plan now costs roughly $1,400/month — a jump of nearly $10,000 annualized. That $22,000 gain effectively cost them $10,000 in lost subsidies, an implicit marginal rate of 45%.

This is why MAGI management is the central planning challenge of the ACA years. The practical tactics:

• Roth conversions: execute these while income is low enough to stay under the cliff, ideally filling the 12–22% bracket
• Capital gain harvesting: harvest gains only when you have meaningful margin below 400% FPL; defer what would push you over
• Dividend management: consider repositioning high-yield holdings in tax-advantaged accounts to reduce uncontrollable MAGI
• Social Security timing: delaying SS also delays the income that counts toward MAGI — relevant for the years right before Medicare

Part-time work: buying coverage you don't manage

A third path that gets undersold: part-time or consulting work that comes with access to employer health insurance. Several large employers extend group health coverage to part-time employees working 20–25 hours per week. The employee premium share on a group plan runs dramatically lower than ACA unsubsidized rates.

This strategy trades some of your time for simplicity and lower cost. You get real group-rate coverage without constant MAGI anxiety. The drawback: it caps your Roth conversion income and extends the "not fully retired" phase. For someone who planned to stay engaged anyway, that's a fine trade. For someone who's done and wants the exit, it's a constraint.

Options side by side

Option	Approx. monthly cost (age 55, individual, 2026)	Duration	Main constraint
COBRA	$550–$700	18 months max	Hard expiration; clock starts at separation
ACA subsidized (200–350% FPL)	$200–$420	Until 65	MAGI must stay under 400% FPL
ACA unsubsidized (over 400% FPL)	$750–$1,050+	Until 65	No ceiling, but expensive regardless
Part-time employer coverage	$100–$300 (employee share)	As long as you work	Requires ongoing employment

Costs vary significantly by state, county, age, and plan tier. The table shows reasonable 2026 midpoints, not guarantees.

Which path fits which situation

The decision typically sorts on income:

• Withdrawal income under ~$50k single / ~$75k couple: ACA with real subsidies. These are also the cheapest years to run Roth conversions — use them.
• $50k–$63k single / $75k–$86k couple: In subsidy territory but approaching the cliff. Model every income source carefully before realizing gains or doing conversions. The ACA subsidy calculator shows the break-even math.
• Consistently over 400% FPL: COBRA to bridge the first 18 months, then unsubsidized ACA or part-time coverage. At high income levels the HSA-eligible Bronze plan (2026 HSA individual limit: $4,400) sometimes pencils out better than Silver — lower premium, higher deductible, but tax-advantaged contributions offset some of the gap.

The years from retirement to Medicare are also the years of maximum income flexibility. The retirees who plan around this — staying under the ACA cliff, converting Roth at low rates, delaying Social Security to build a larger permanent check — run healthcare costs that would surprise their still-working peers. The retirees who ignore it pay full freight on all three: ACA premiums, income taxes, and eventual RMDs.

If you want to model how healthcare costs interact with your retirement date, the retire at 55 page runs the full picture. For the wider question of what you actually need to retire at a given date, Granary integrates ACA subsidy eligibility, Roth conversion windows, and Social Security timing in one plan rather than three separate spreadsheets.

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This post is planning education, not tax or insurance advice. ACA eligibility rules, plan availability, and premium amounts vary by state and change year to year — verify your specific situation at healthcare.gov and with a fee-only financial advisor.