For people who retire before Medicare eligibility, health insurance is often the most unpredictable expense in the budget. Premiums vary by location, rules change frequently, and small income shifts can have outsized consequences.
That uncertainty increases in 2026. The Affordable Care Act returns to its pre-pandemic subsidy structure, and with it comes a sharp cutoff that many households are not expecting. The expanded subsidies that made marketplace coverage more forgiving are expiring. What replaces them is a system in which going slightly over an income threshold can dramatically increase health insurance costs.
What Changes in 2026
For the past several years, ACA subsidies have been expanded to allow households above traditional income limits to still receive help paying premiums. Those expanded rules are ending.
Under the ACA’s original subsidy structure, premium tax credits end once household income exceeds 400 percent of the federal poverty level. For a married couple, that threshold is roughly around the mid-$80,000s, depending on the year and household details.
There is no gradual taper once you cross that line. Go over it, and the subsidy is gone. This is why the change is often referred to as a subsidy cliff. The drop-off is sudden, and the financial impact can be severe.
Why This Catches So Many Households Off Guard
Many retirees do not consider themselves high-income. They are no longer earning salaries. Their lifestyle feels modest. Their tax bill may even be relatively low.
The issue is that the ACA defines income differently than most people expect. For subsidy purposes, the ACA uses a version of modified adjusted gross income (MAGI) that includes retirement account withdrawals, interest and dividends, capital gains, and the full amount of Social Security benefits. Although Social Security is only partially taxable for income tax purposes, the ACA counts 100% of it when determining subsidy eligibility.
That distinction alone can move a household from subsidized coverage to full-price premiums.
For example, a married couple who retired before becoming eligible for Medicare buys coverage through the ACA marketplace. They receive about $38,500 per year from Social Security and withdraw $35,000 from pre-tax retirement accounts to support their lifestyle. They also earn another $20,000 from part-time or consulting work. For ACA purposes, all this income counts toward the household total, bringing it to $93,500, which exceeds the income level typically used for ACA subsidies.
Nothing about this situation looks extreme. There is no luxury spending and no unusually high income. Yet this couple is now above the subsidy cutoff, potentially losing several thousand dollars per year in premium assistance. If this income is not anticipated in advance, the lost subsidy often shows up later, sometimes as a surprise, in the form of a repayment when the tax return is filed.
Where Social Security Fits In
Social Security is not the main problem, but it frequently determines which side of the subsidy cliff a household lands on.
If an early retiree plans to use Social Security to reduce portfolio withdrawals, it could push their household over the ACA limit. For households near the threshold, claiming Social Security before Medicare eligibility can significantly increase health insurance costs. This is one reason some retirees delay Social Security until Medicare begins, even if they originally planned to claim earlier.
In these situations, the cost of health insurance can offset much of the perceived benefit of claiming early.
For many households, the years between retirement and Medicare eligibility are where the most complex tradeoffs show up. Health insurance decisions, Social Security timing, and income planning are tightly connected, and small changes can have large downstream effects. If you want a more structured way to think through these decisions, our Medicare Decisions and Health Expenses for Retirees Workshop walks through how health costs evolve around Medicare and how to evaluate these choices in the context of the rest of your retirement plan.
Planning Is About Timing and Coordination
There is no loophole that makes the subsidy cliff disappear. Planning is about managing when income shows up and how much appears in any given year.
Some common approaches include:
- Coordinating income years – Not every retirement year needs to look the same. Some years may be better for higher-income activities like Roth conversions or large withdrawals. In other years, it benefits to stay below the subsidy threshold.
- Managing withdrawal sources – Drawing from a mix of taxable accounts, tax-deferred accounts, and Roth accounts can help smooth income instead of creating spikes.
- Being intentional with Social Security timing – Claiming decisions should consider health insurance costs, not just monthly benefit amounts.
- Preserving flexibility – Households with multiple income levers and discretionary spending have more room to adapt when income runs close to the limit.
Why Flexibility Matters More Than Ever
ACA rules have changed repeatedly over the past decade. Subsidies expanded. Now they are contracting. They could change again.
That uncertainty is exactly why retirement plans work best when they are designed to adjust rather than follow a single rigid path. For early retirees, managing health insurance costs is not about mastering the tax code. It is about understanding where the pressure points are and building a plan that gives you options when the rules inevitably shift.
Want to learn more? Listen to Episode 210 of the Retire With Style Podcast.
