Financial Disclaimer: This is informational content, not financial advice. Consult a qualified financial professional for your specific situation.

Healthcare Costs in Retirement: Medicare Premiums, Medigap, and HSA Strategy

Key Takeaways

• Fidelity estimates an average 65-year-old couple needs $365,000 for healthcare costs in retirement (2026 estimate)
• The standard Medicare Part B premium for 2026 is $202.90/month; IRMAA surcharges can push it to $689.90/month for high earners
• Medigap Plan G is the most popular supplement, covering nearly all out-of-pocket costs for $150-$350/month depending on age and location
• The HSA is the only account with triple tax advantages — and it becomes an additional retirement account after age 65

Healthcare is consistently the most underestimated expense in retirement planning. It is not covered by the 80% income replacement rule, it inflates faster than general CPI, and it can vary wildly based on your health status, prescription drug needs, and where you live. Understanding the Medicare system, supplemental insurance options, and the strategic value of Health Savings Accounts is essential for any retirement plan that expects to last 25-35 years.

The Cost Landscape: What to Budget

Fidelity’s 2026 Retiree Healthcare Estimate

Fidelity’s annual estimate — widely cited as the benchmark — projects that a 65-year-old couple retiring in 2026 needs approximately $365,000 to cover healthcare expenses through retirement. For a single person, the figure is approximately $182,500.

This includes:

• Medicare Part B and Part D premiums
• Out-of-pocket costs (copays, coinsurance, deductibles)
• Supplemental insurance premiums (Medigap or Medicare Advantage)
• Dental and vision costs (not covered by Original Medicare)

This does not include:

• Long-term care (nursing home, assisted living)
• Home healthcare beyond what Medicare covers
• Pre-65 healthcare costs (for early retirees)

Annual Cost Breakdown in 2026

A typical 65-year-old couple in their first year of retirement can expect:

Cost Category	Annual Cost (couple)
Medicare Part B premiums	$4,870 ($202.90/month x 2)
Medicare Part D premiums	$960-$1,800 (varies by plan)
Medigap Plan G premiums	$3,600-$8,400 (varies by state/age)
Out-of-pocket costs	$2,000-$5,000
Dental and vision	$1,000-$3,000
Total first-year estimate	$12,430-$24,070

These costs increase with age. By 80, expect 40-60% higher costs due to increased medical utilization, more prescriptions, and higher Medigap premiums.

Medicare: The Foundation

Part A: Hospital Insurance

• Premium: $0 for most retirees (if you or your spouse paid Medicare taxes for 40+ quarters)
• Deductible: $1,762 per benefit period in 2026
• Coverage: Inpatient hospital, skilled nursing (limited), hospice, some home health

Part B: Medical Insurance

• Standard premium: $202.90/month in 2026 (up from $185.00 in 2025)
• Deductible: $271/year
• Coverage: Doctor visits, outpatient care, preventive services, durable medical equipment
• Coinsurance: You pay 20% of Medicare-approved amounts after the deductible (with no out-of-pocket maximum — this is why supplemental coverage matters)

Part D: Prescription Drug Coverage

• Average premium: $40-$75/month in 2026 (varies by plan and formulary)
• Structure: Deductible, initial coverage, coverage gap (donut hole is closing), catastrophic coverage
• SECURE 2.0/IRA note: Starting in 2025, the Inflation Reduction Act capped out-of-pocket Part D costs at $2,000/year — a significant benefit for retirees with expensive medications

Medicare Advantage (Part C): The Alternative

Medicare Advantage plans (offered by private insurers like UnitedHealthcare, Humana, Aetna) bundle Parts A, B, and usually D into a single plan. They often include dental, vision, and hearing benefits with $0 or low premiums.

Trade-offs: Lower premiums but narrower provider networks, prior authorization requirements, and variable quality depending on the plan and region. In 2026, approximately 54% of Medicare beneficiaries are enrolled in Advantage plans.

IRMAA: The Medicare Surcharge for Higher Earners

Income-Related Monthly Adjustment Amounts (IRMAA) are premium surcharges that hit Medicare beneficiaries with higher incomes. The thresholds are based on your Modified Adjusted Gross Income from two years prior (2024 MAGI determines 2026 IRMAA).

2026 IRMAA Brackets

MAGI (Single)	MAGI (Joint)	Part B Monthly Premium	Part D Monthly Surcharge
$109,000 or less	$218,000 or less	$202.90	$0
$109,001-$137,000	$218,001-$274,000	$284.10	$14.50
$137,001-$171,000	$274,001-$342,000	$405.70	$37.40
$171,001-$205,000	$342,001-$410,000	$527.30	$60.30
$205,001-$500,000	$410,001-$750,000	$648.90	$83.20
Over $500,000	Over $750,000	$689.90	$91.00

Source: CMS — 2026 Medicare Parts A & B Premiums and Deductibles

The cliff effect: IRMAA brackets are cliffs, not gradual phase-outs. Exceeding $109,000 (single) by even $1 triggers the full surcharge for the entire year. For a couple at the first IRMAA tier, the additional Part B cost is $162.40/month ($1,948.80/year) plus the Part D surcharge.

IRMAA Mitigation Strategies

• Roth conversions before 65: Converting Traditional IRA balances to Roth in your early 60s increases MAGI in those years but reduces it in your Medicare years. See our Roth vs. Traditional analysis.
• Roth withdrawals in retirement: Roth IRA distributions do not count toward MAGI, making them the ideal income source for managing IRMAA brackets.
• Qualified Charitable Distributions: QCDs from your IRA satisfy RMDs without increasing MAGI — a powerful tool for charitably inclined retirees near IRMAA cliffs.
• Life-Changing Event appeal: If your income dropped due to retirement, divorce, or death of a spouse, you can request a reduction using Form SSA-44.

Medigap: Closing the Gaps

Original Medicare (Parts A and B) has no out-of-pocket maximum. A serious illness can generate tens of thousands in coinsurance charges. Medigap (Medicare Supplement Insurance) covers these gaps.

Most Popular Medigap Plans in 2026

Plan	Part A Deductible	Part B Coinsurance (20%)	Part B Excess Charges	Foreign Travel	2026 Monthly Premium Range
Plan G	No	Yes	Yes	Yes	$150-$350
Plan N	No	Yes (with copays)	No	Yes	$100-$250
High-Deductible G	After $2,900 deductible	Yes	Yes	Yes	$40-$80

Plan G is the most popular Medigap plan because it covers everything except the Part B deductible ($271/year in 2026). Plan F (which covers the Part B deductible too) is no longer available to new enrollees who became Medicare-eligible after January 1, 2020.

When to enroll: Your 6-month Medigap Open Enrollment Period starts the month you are 65 and enrolled in Part B. During this window, insurers cannot deny you coverage or charge higher premiums based on health status. Missing this window means potential medical underwriting and possible denial.

The HSA: Retirement’s Secret Weapon

The Health Savings Account offers a combination of tax benefits that no other account matches:

1. Tax-deductible contributions (reduce your AGI)
2. Tax-free growth (investments compound without annual taxation)
3. Tax-free withdrawals for qualified medical expenses (at any age)

2026 HSA Contribution Limits

Coverage Type	Under 55	55+ (with catch-up)
Self-only	$4,400	$5,400
Family	$8,750	$9,750

The Long-Term HSA Strategy

The optimal HSA strategy for retirement is counterintuitive: do not use your HSA for current medical expenses. Instead:

1. Pay current medical bills from cash or checking — not from the HSA
2. Save receipts for all qualified medical expenses (they never expire)
3. Invest HSA funds in low-cost index funds for long-term growth
4. In retirement, reimburse yourself for decades of saved receipts, tax-free
5. After 65, use HSA funds for any purpose (taxed as income, like a Traditional IRA) — or for medical expenses tax-free

The math: A 35-year-old contributing $4,400/year to an HSA for 30 years at a 7% average return accumulates approximately $440,000 — all available tax-free for medical expenses in retirement, or penalty-free for any purpose after 65.

HSA Eligibility Requirements

• Must be enrolled in a High-Deductible Health Plan (HDHP)
• In 2026: minimum deductible of $1,700 (individual) or $3,400 (family)
• Cannot be enrolled in Medicare (once you start Medicare, you can no longer contribute — but you can still withdraw and invest existing funds)
• Cannot be claimed as a dependent on someone else’s tax return

Critical timing note: Stop HSA contributions 6 months before enrolling in Medicare Part A to avoid tax penalties. If you delay Medicare enrollment (possible if you have employer coverage after 65), you can continue contributing.

Pre-65 Healthcare: The Early Retirement Gap

If you retire before 65, you must bridge the healthcare gap between employer coverage and Medicare. Options include:

Option	Monthly Cost (couple, ages 60-64)	Notes
COBRA	$1,500-$2,500	Maximum 18 months; no subsidy
ACA Marketplace	$600-$2,000	Subsidy-eligible based on MAGI
Health-sharing ministry	$400-$700	Not insurance; no guarantee of coverage
Spouse’s employer plan	Varies	Best option if available
Part-time job with benefits	Varies	”Barista FIRE” approach

ACA subsidy strategy for early retirees: By managing your taxable income (using Roth withdrawals, which do not count as MAGI for ACA purposes, and controlling capital gains realization), you can keep your MAGI below 400% of the federal poverty level and qualify for significant premium tax credits. This is a cornerstone strategy for FIRE movement early retirees.

Building Healthcare Into Your Retirement Number

When calculating how much you need to retire, healthcare should be an explicit line item, not buried in a general expense estimate:

Scenario	Additional Savings Needed
Couple retiring at 65, basic Medicare + Medigap	$300,000-$400,000
Couple retiring at 60, bridge + Medicare	$400,000-$550,000
Single person retiring at 65	$150,000-$200,000
With chronic conditions or expensive prescriptions	Add $50,000-$150,000

These figures should be in addition to your general living expense calculations. Healthcare inflation has historically run 5-7% annually — roughly double the general inflation rate.

The Bottom Line

Healthcare is not an optional line item in retirement planning — it is one of the largest and least predictable expenses you will face. Start with Medicare literacy: know what Parts A, B, D, and Medigap cover and cost. Understand IRMAA and plan your income to manage surcharges. Build an HSA aggressively while you are eligible — it is the most tax-efficient tool in the retirement planning toolkit. And if you are planning early retirement, budget $15,000-$30,000 per year per couple for the pre-Medicare gap. The retirees who struggle most with healthcare costs are the ones who did not plan for them at all.

Sources:

• CMS — 2026 Medicare Parts A & B Premiums and Deductibles
• IRS — Health Savings Accounts
• SSA — Medicare Premiums
• Fidelity — Retiree Health Care Cost Estimate