Healthcare costs in retirement follow a pattern most people don't anticipate: they start manageable, plateau in the early retirement years when health is still relatively good, and then accelerate sharply in the final decade of life when care needs intensify. The mistake isn't that people underestimate healthcare costs at age 65 — most have a rough sense that Medicare won't cover everything. The mistake is treating these as a fixed line item when they're actually one of the most variable and unpredictable expenses in a retirement plan.
Building a buffer against healthcare costs in retirement requires understanding what Medicare actually covers, where the gaps are, what supplemental coverage costs, and how to accumulate dedicated assets in accounts that offer tax advantages specifically for medical spending.
What Healthcare Costs in Retirement Actually Look Like
Fidelity's annual retiree healthcare cost estimate is widely cited as a benchmark. Their most recent estimate suggests a couple retiring at 65 may need several hundred thousand dollars over retirement to cover medical expenses not covered by Medicare — verify the current year's figure at fidelity.com/viewpoints, as the estimate updates annually. That figure includes premiums, deductibles, co-pays, and out-of-pocket costs but generally excludes long-term care, which represents an additional and substantial exposure.
Medicare Part B premium for 2026 is $202.90 per month per person (verified at medicare.gov). A married couple pays over $4,800 annually in Part B premiums alone. That's before the Part B deductible of $283 per year, before 20% coinsurance on most outpatient services, and before any prescription drug coverage. For a couple spending 25–30 years in retirement, the cumulative premium cost alone is substantial even without factoring in medical events.
The Part A hospital deductible for 2026 is $1,736 per benefit period (verified at medicare.gov). Unlike most insurance, Medicare Part A doesn't have a simple annual deductible — it has a per-benefit-period structure where someone hospitalized twice in a year could face the deductible twice. Days 61–90 of a hospital stay cost $434 per day. Beyond 90 days, Medicare coverage runs out unless you've been spending lifetime reserve days. A skilled nursing facility stay costs $217 per day for days 21–100 after a qualifying hospital admission.
Where Medicare Falls Short: The Gaps That Catch People Off Guard
Traditional Medicare (Parts A and B) doesn't cover dental care, routine vision exams or eyeglasses, hearing aids, or most long-term care. These aren't minor omissions.
Dental care costs rise with age, and dental problems left untreated often become systemic health issues. A single dental implant can cost $3,000–$5,000 out of pocket. A full set of dentures often runs $2,000–$5,000 or more. Retirees who budget only for traditional medical costs and ignore dental frequently face unexpected four-figure bills.
Hearing aids, not covered by traditional Medicare, typically run $2,000–$7,000 per pair and need replacement every few years. Over-the-counter hearing aids became available in the US in 2022 and have lowered the entry price point, but prescription-grade devices remain expensive and the OTC versions aren't appropriate for all levels of hearing loss.
Long-term care — assistance with activities of daily living, whether in a skilled nursing facility or at home — is covered by Medicare only for short-term, post-acute care following a qualifying hospital stay. Custodial care (help with bathing, dressing, eating) isn't covered at all by Medicare. Medicaid covers it, but only after assets are spent down to very low levels that vary by state. Private long-term care insurance is expensive and has seen significant premium increases in recent years; many insurers have exited the market. Hybrid life insurance / long-term care products offer an alternative worth exploring with a licensed advisor.
Health Savings Accounts: The Most Tax-Efficient Retirement Healthcare Tool
An HSA — a Health Savings Account — is the only account in the tax code that offers a triple tax advantage: contributions are pre-tax (or tax-deductible if made directly), growth is tax-free, and withdrawals for qualified medical expenses are tax-free. After age 65, non-medical withdrawals are permitted penalty-free (though subject to income tax, making the HSA function like a traditional IRA for non-medical use).
To contribute to an HSA, you must be enrolled in a High Deductible Health Plan (HDHP) as defined by the IRS. Once you enroll in Medicare, HSA contributions stop — Medicare enrollment disqualifies you from making new contributions. For someone who plans to delay Medicare by working past 65 and maintaining employer coverage, the years between 65 and Medicare enrollment represent a high-value contribution window.
HSA contribution limits for 2026 adjust with inflation — verify the current year's limits at irs.gov before contributing. The family coverage limit is substantially higher than the individual limit, and those 55 and older can make a catch-up contribution of $1,000 beyond the standard limit. Contribution limits are volatile in the sense that they adjust annually, and the amounts in circulation on older blog posts are frequently stale.
The strategic use of an HSA in the accumulation phase is to invest the balance (most custodians now offer investment options beyond the basic savings rate) rather than spending it on current medical costs. Pay current medical expenses out of pocket when possible, save receipts, and let the HSA balance grow tax-free. Decades later, those documented unreimbursed expenses can be reimbursed from the HSA tax-free with no time limit on the reimbursement — effectively turning decades of compounding into tax-free medical cash flow in retirement.
Medigap: What Supplemental Coverage Actually Costs and Covers
Medigap (Medicare Supplement Insurance) policies are sold by private insurers to fill the gaps in original Medicare. Plans are standardized by letter (Plan G, Plan N, etc.) in most states, meaning a Plan G from one insurer covers the same benefits as a Plan G from another — only the premium differs.
The most popular plans for people new to Medicare in 2026 are generally Plan G (which covers most Medicare cost-sharing after the Part B deductible) and Plan N (which covers most costs but requires copays for some office visits). Plan G covers the Part A deductible, Part B coinsurance, Part B excess charges, and foreign travel emergency care. It does not cover the Part B deductible.
Medigap premiums vary substantially by age, location, gender, and tobacco use. A 65-year-old woman in a lower-cost state might pay $100–$150/month for Plan G; the same policy in a higher-cost state or at older ages may run $200–$350/month or more. Request quotes from multiple carriers in your zip code, as premium spread for identical coverage can be wide. Premiums are not regulated in most states — the insurer sets them competitively.
One critical timing rule: you have a guaranteed-issue right to buy any Medigap policy without medical underwriting during the 6-month open enrollment period that starts when you're 65 and enrolled in Part B. Outside that window, insurers in most states can medically underwrite applicants — meaning they can charge more or deny coverage based on pre-existing conditions. Enrolling at the right time locks in your insurability regardless of health status.
IRMAA: When Higher Income Raises Medicare Premiums
Higher-income Medicare beneficiaries pay more for Part B and Part D through the Income-Related Monthly Adjustment Amount (IRMAA). IRMAA surcharges are tiered — the first tier kicks in at MAGI above $103,000 for single filers and $206,000 for married filing jointly (2024 income affecting 2026 premiums; thresholds adjust annually — verify at ssa.gov/medicare/lower-irmaa).
The two-year lookback creates a planning opportunity. A large Roth IRA conversion in 2024 can show up as higher income that triggers IRMAA surcharges for 2026 Medicare premiums. Pre-Medicare retirees living on taxable investment income or doing annual conversions should track their MAGI carefully relative to IRMAA tier boundaries.
If your income drops significantly — due to a job loss, a divorce, or retirement itself — you can appeal an IRMAA determination using Form SSA-44 and provide documentation of the life-changing event. SSA has formal procedures for adjusting premiums based on more recent income when older tax returns don't reflect your current situation. The appeal process is straightforward and worth pursuing when income genuinely drops below the threshold in more recent years.
Building the Buffer: A Tiered Approach to Healthcare Planning
Rather than treating healthcare as one undifferentiated expense, a tiered approach matches different financial tools to different types of healthcare risk:
Tier 1 — Known annual costs. Medicare premiums, Part B deductible, predictable prescription costs. These belong in your core monthly budget and shouldn't require special reserves.
Tier 2 — Expected but irregular costs. Dental work, vision, hearing aids, out-of-pocket co-pays that accumulate during a year. A dedicated cash reserve of $3,000–$7,000 for a couple handles most of these without touching retirement investments.
Tier 3 — Large unexpected medical events. A hospitalization, a surgical procedure, a cancer diagnosis. This is where HSA assets, Medigap coverage, and Part A coverage interact. The combination of a Medigap plan and $10,000–$20,000 in accessible HSA or savings covers most non-catastrophic events.
Tier 4 — Long-term care. This is the category that can exhaust even substantial retirement savings. An 18-month stay in a memory care facility can cost more than $100,000 in many markets. Long-term care insurance, hybrid life/LTC policies, or deliberate asset protection strategies (in states that allow Medicaid-compliant planning with appropriate lead time) are the tools for this tier.
Most healthcare buffer plans fail because they only address Tier 1 and maybe Tier 2. Tier 4 is where the financial catastrophe actually happens. The majority of retirees either underinsure for long-term care or don't address it at all until it's too late to purchase coverage at favorable rates.
What to Do if You're Already Past the HSA Contribution Years
Not everyone arrives at retirement with a fully stocked HSA. For those who didn't have access to an HDHP — or who enrolled in Medicare before building a substantial balance — the buffer-building approach shifts.
A dedicated savings account earmarked specifically for healthcare provides the same liquidity function as an HSA for after-tax dollars. The tax efficiency is lower, but the behavioral function — keeping healthcare money separate from general spending money — reduces the risk of drawing it down for non-medical purposes.
Taxable brokerage accounts with conservative allocations can serve as a medium-term healthcare reserve. The investment horizon on healthcare reserves is relatively short — you may need this money in 5–15 years — which argues for a more conservative allocation than a growth-oriented long-term retirement account.
Verify your Medicare plan options annually during the Open Enrollment period (October 15 – December 7 each year). Part D plans change formularies and premiums every year; the plan that was the best fit for your drug costs last year may not be the best fit this year. Medicare's plan comparison tool at medicare.gov lets you compare current premiums, deductibles, and coverage — confirm 2026 costs directly there before making enrollment decisions.
A final practical point on prescription drug coverage: don't confuse Medicare Part B drug coverage with Part D drug coverage. Part B covers drugs administered in a clinical setting — chemotherapy, certain biologics given in a doctor's office. Part D covers drugs you pick up at a pharmacy. Both are relevant, and both have cost-sharing that affects your healthcare budget.
For retirees managing multiple chronic conditions with several medications, Part D plan selection deserves careful annual attention. The same drug can cost dramatically different amounts under different Part D plans, depending on each plan's formulary and the pharmacy network. The Medicare Part D drug plan comparison tool at medicare.gov lets you enter your specific medications and compare total annual cost — premium plus expected out-of-pocket drug costs — across all available plans in your zip code. Running this comparison each October during Open Enrollment takes roughly 20 minutes and can save several hundred dollars annually.
Long-term, the most durable protection against healthcare cost shocks is building multiple financial tools for different scenarios rather than relying on a single account or coverage type. Social Security delay protects survivor income. Medicare covers acute care. Medigap covers the gaps in Medicare. An HSA or dedicated savings account covers dental, vision, and smaller out-of-pocket costs. And deliberate long-term care planning — started earlier rather than later — addresses the tail risk that can outlast all other preparations.
None of this is financial advice. Your situation depends on variables this article can't see — taxes, risk tolerance, time horizon, dependents. A fiduciary advisor can model your specific case.
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