Healthcare is simultaneously the largest wildcard expense in retirement planning and the one most frequently underestimated in retirement projections. Fidelity’s annual estimate of healthcare costs for a 65-year-old couple retiring today consistently exceeds $300,000 in total retirement healthcare costs — and this estimate does not include long-term care, the most expensive and least predictable component of late-life healthcare. Understanding what healthcare costs in retirement, how Medicare works and what it does not cover, and how to plan for both expected and catastrophic healthcare expenses produces retirement plans that are more resilient than those that treat healthcare as a number rather than a system requiring its own planning framework.
Medicare Basics: What It Covers and What It Doesn’t
Medicare eligibility begins at age 65 for most Americans, and it covers considerably less than many pre-retirees assume. Part A covers hospital inpatient care, skilled nursing facility care, hospice, and some home health services — with deductibles and coinsurance that create significant out-of-pocket exposure for serious hospitalizations. Part B covers physician services, outpatient care, preventive services, and durable medical equipment — with a monthly premium (approximately $175 in 2024, income-adjusted higher for those with significant income), an annual deductible, and 20 percent coinsurance after the deductible with no cap on exposure.
The most important coverage gap in original Medicare is the absence of an out-of-pocket maximum — a beneficiary with a serious illness can face unlimited coinsurance exposure from Part B. This gap is what Medicare Supplement (Medigap) policies address, providing secondary insurance that covers most or all of the original Medicare coinsurance and deductibles in exchange for a monthly premium. Part D provides prescription drug coverage through private plans with their own premiums and formulary structures. Medicare Advantage (Part C) offers an all-in-one alternative to original Medicare plus Medigap that provides the out-of-pocket cap within a managed care structure — attractive for its lower premiums but subject to network restrictions that original Medicare plus Medigap avoids.
The Gap Years: 62 to 65 Before Medicare
Retirees who stop working before age 65 face a coverage gap period before Medicare eligibility begins. COBRA continuation of employer coverage is available for up to 18 months but at full cost — often $1,000-2,000 per month for family coverage. Marketplace plans under the ACA are available as alternatives, with premium tax credits available based on income — a consideration that makes income management during the pre-Medicare years strategically important. Converting traditional IRA funds to Roth in lower-income years can increase taxable income in ways that reduce ACA subsidy eligibility, requiring coordination of the Roth conversion strategy with healthcare cost management during the gap years.
Funding Healthcare in Retirement
The Health Savings Account, maximized during working years, is the most tax-efficient vehicle for accumulating retirement healthcare funds — contributions are deductible, growth is tax-free, and qualified medical expense withdrawals are tax-free. An HSA balance invested and grown through working years provides tax-free funds for retirement healthcare without the limitations of other dedicated healthcare savings approaches. For those without HSA access or with inadequate HSA balances, earmarking a specific portion of the retirement portfolio for healthcare expenses — held in conservative investments to provide reliable access when needed — provides the dedicated healthcare funding that general retirement account withdrawals cannot as easily accommodate without disrupting the portfolio’s overall withdrawal strategy.