Retiring Before 65: How to Bridge the Health Insurance Gap Without Draining Your Plan

The pre-Medicare gap is a tax problem wearing a health insurance costume. Get the tax layer wrong and you can spend more than you have to before age 65 arrives, because the price of your coverage is set by the income you report, and in early retirement you have unusual control over that number.

COBRA Is Usually the Wrong Default

When you leave an employer, continuation coverage under the Consolidated Omnibus Budget Reconciliation Act (COBRA) feels like the safe, familiar choice. It is often neither. You keep your coverage, but you pay the full premium your employer was subsidizing, plus a 2% administrative fee. For a family plan, that can run $2,000 to $2,500 a month or more.

The Affordable Care Act (ACA) marketplace is frequently cheaper, because subsidies are based on reported income and assets do not count. A couple retiring at 62 with $3M in a brokerage account but modest taxable income can qualify for premium tax credits. The enhanced credits that applied from 2021 through 2025 expired, so for 2026 the cliff is back: the credit stops entirely once modified adjusted gross income (MAGI) exceeds 400% of the federal poverty level, about $84,600 for a two-person household in the 48 contiguous states.

COBRA has one legitimate use case: you are mid-way through an expensive claims year, your deductible is nearly met, and switching would restart it.

The Subsidy-Conversion Tension Is the Central Problem

Roth conversions, often most valuable in the exact years between retirement and Medicare, directly increase your MAGI. Convert $60,000 in a year when your other income is low, and you might cross the cliff and lose the whole credit, adding $12,000 or more in premiums to fund a conversion that saved you $14,000 in future taxes. The net advantage shrinks fast.

That tension calls for sequencing the conversions. The conversion amount, its timing within the year, other income sources, and the subsidy cliff all interact. The Sporos Doctrine treats this as a multi-year coordination problem.

Your health savings account (HSA) belongs here too. Funds already there can pay qualified out-of-pocket medical costs tax-free at any age, and COBRA premiums during the bridge. ACA marketplace premiums generally do not qualify, while Medicare premiums do once you enroll. That makes every dollar you built up while working a clean, untaxed resource in the bridge period. And if your spouse is still employed, joining their plan may be the simplest bridge available.

The Takeaway

The answer depends on how much of your wealth sits in pre-tax accounts. If most of your money is already in a taxable brokerage account or a Roth, you can live on low reported income, capture the subsidies, and the bridge is close to free. If your balance sheet is mostly a traditional 401(k), those same low-income years are the cheapest conversion window you will ever get, and spending them on subsidies may be the more expensive choice.

The version I see go wrong involves people who correctly identify the subsidy cliff, hold income beneath it every year until Medicare, then meet required minimum distributions in a higher bracket than the one they retired from, trading a few years of premium savings for years of higher taxes.

Which side of that trade you are on depends on numbers specific to you, and it is worth talking through before you pick next year's coverage.

The information provided is for educational purposes only and does not constitute investment, legal, or tax advice. Consult with qualified professionals for guidance specific to your situation.