American Insurance · PUBLISHED 15 JUL 2026 · VERIFIED 15 JUL 2026 · US EDITION

Hidden Medicare Costs: Why You Need $172K More in Retirement

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A 65-year-old couple retiring today is projected to need about $315,000–$428,000 out of pocket for health care in retirement on top of what Medicare pays.

The number that matters

$172.5K — lifetime out-of-pocket health costs for a single 65‑year‑old on Medicare. Fidelity’s 2025 Retiree Health Care Cost Estimate found that a 65‑year‑old may need $172,500 for health care costs in retirement that are not fully covered by Medicare.

How it quietly costs you

Hidden cost: Medicare premiums, deductibles, and coinsurance are ongoing, mandatory expenses that most people underestimate.

Mechanism

• Part B premiums: Most beneficiaries pay a standard $202.90/month for Medicare Part B in 2026, regardless of how often they use it.
• That is $2,434.80/year in required premiums.
• Part B deductible: Before Medicare starts paying in a year, you must meet a $283 annual deductible in 2026.
• 20% coinsurance with no cap: Original Medicare generally covers 80% of approved Part B costs; you pay the remaining 20% coinsurance, and there is no out‑of‑pocket maximum if you have only Original Medicare.
• Part A hospital costs: Even “free” Part A has large cost-sharing:
• $1,736 deductible per benefit period for a hospital stay in 2026.
• After 60 days in the hospital, daily coinsurance ranges from $434 to $838 per day.

Quantified impact

For a typical retiree:

• Part B standard premiums over a 20‑year retirement:
• ( $202.90/month × 12 × 20 \approx $48,696 ) in premiums alone (assuming constant real premiums).
• A single hospitalization:
• One 5‑day stay: at least $1,736 Part A deductible plus 20% of Part B physician charges.
• Ongoing outpatient care:
• Every <mark class=“fig”>$1,000 of Part B‑covered services costs the beneficiary $200 out of pocket due to the 20% coinsurance.

Old vs better comparison

• Old/naive view: “Medicare is free at 65.”
• Reality in 2026: A typical beneficiary pays about $202.90/month for Part B plus a projected $34.50/month for a stand‑alone Part D plan (≈$237.40/month total), before any deductibles or copays.
• Over 20 years, that baseline premium burden alone is roughly $56,976 (Part B + average Part D), excluding Medigap or Advantage premiums.

The second, compounding trap

Hidden cost: Medicare does not cover key services (especially long‑term care, dental, vision, and hearing), and higher-income retirees face surcharges that compound total lifetime costs.

Mechanism

1. Major gaps in what Medicare covers

• Original Medicare typically does not cover routine dental exams and dentures, routine eye exams and glasses, or hearing aids, all of which are common and can be costly in older age.
• It also generally does not cover long‑term custodial care (e.g., help with activities of daily living in nursing homes or assisted living), forcing retirees to pay out of pocket or rely on Medicaid.

2. Higher‑income surcharges (IRMAA)

• If your annual income exceeds certain thresholds, you pay higher Part B and Part D premiums through Income‑Related Monthly Adjustment Amounts (IRMAA).
• A live Medicare Q&A notes that current Part B IRMAA ranges from about $80–$82/month extra at the lowest level up to about $475/month extra at the highest level.
• Part D IRMAA adds roughly $14–$91/month depending on income level.

3. Prescription drug plan changes

• Part D plans can change their drug formularies mid‑year, moving a medication to a higher tier that costs more in copays or coinsurance.
• This means a drug that was affordable in January can become significantly more expensive later in the same year.

Quantified long‑run cost

• Uncovered routine care

• A retiree who needs:

• One set of quality hearing aids (often $2,000–$6,000 per pair in the private market),

• Regular dental work (e.g., major procedures can run thousands of dollars),

• Glasses every few years, can easily face tens of thousands of dollars over 20+ years because these items are not covered by Original Medicare.

• Higher‑income IRMAA example

• A high‑income couple hit with an additional $200/month combined IRMAA charge (Part B + D) for 20 years would pay:

• ( $200 × 12 × 20 = $48,000 ) in surcharges alone, on top of standard premiums.

• Total health‑care gap above Medicare

• A 2025 estimate finds a 65‑year‑old single retiree needs $172,500 for health costs beyond Medicare.

• One video analysis estimates the average retired couple faces $315,000–$428,000 in costs that Medicare alone will not cover.

What this looks like in practice

Persona

• Name: Linda
• Age: 64
• Job: Administrative assistant
• Income (final working year): $55,000/year
• Retirement savings: $350,000 in a 401(k)
• Expected Social Security: $1,800/month
• Medicare path: Original Medicare (Part A & B), stand‑alone Part D plan, no Medigap initially
• Years to retirement: 1 year (plans to enroll in Medicare at 65)

Discovery 1 — “Medicare premiums will consume a chunk of my Social Security”

• Linda learns the standard Part B premium is $202.90/month in 2026.
• She also learns the average stand‑alone Part D premium is projected at $34.50/month.
• Combined, that’s $237.40/month, or about 13% of her $1,800/month Social Security benefit.
• Benchmark comparison: Linda assumed Medicare would be “nearly free,” but official data shows she will pay about $2,848.80/year just for Parts B and D premiums.

Discovery 2 — “Original Medicare leaves me exposed to unlimited 20% coinsurance”

• Linda discovers Original Medicare pays about 80% of Part B costs and she must pay the remaining 20% with no out‑of‑pocket maximum.
• If she has a year with $10,000 in Part B‑covered outpatient and specialist bills, she pays $2,000 in coinsurance out of pocket in addition to premiums and deductibles.
• Benchmark comparison: A good Medigap plan (e.g., Plan G) could cap or cover most of that 20% exposure, while Original Medicare alone has no cap.

Discovery 3 — “The things I’ll definitely need—dental, vision, hearing, and long‑term care—aren’t covered”

• Linda learns that Original Medicare typically does not cover routine dental care, dentures, routine eye exams, glasses, or hearing aids, and doesn’t cover most long‑term custodial care.
• Over a 25‑year retirement, if she needs:
• A pair of hearing aids twice (say $4,000 per pair),
• Major dental work every 10 years (e.g., $5,000 per episode),
• Regular glasses (e.g., $400 every 3 years), she could easily face $25,000–$40,000 in out‑of‑pocket costs just for these categories, none of which are paid by Original Medicare.
• Benchmark comparison: She assumed “Medicare covers my health care,” but these recurring needs fall entirely outside standard coverage, forcing her to self‑fund or buy separate insurance.

The full cost of doing nothing

For Linda, combining ongoing premium/coinsurance costs (Problem 1) with uncovered services and surcharges (Problem 2) over a 25‑year retirement can plausibly reach around $200,000 in today’s dollars.

Modelling basis (illustrative, grounded in official figures):

• Premiums (Parts B & D):

• Part B: $202.90/month × 12 × 25 ≈ $60,870.

• Part D (average): $34.50/month × 12 × 25 ≈ $10,350.

• Total premiums ≈ $71,220 (assuming real premiums roughly track current levels).

• Deductibles & coinsurance (Part A & B):

• Assume Linda averages $3,000/year in Part B‑covered outpatient costs; she pays 20% = $600/year.

• Over 25 years: $600 × 25 = $15,000.

• Add one major hospitalization per decade: $1,736 deductible × 3 = $5,208 plus associated physician coinsurance.

• Rounded total ≈ $22,000 in deductibles and coinsurance.

• Uncovered services (dental, vision, hearing, long‑term care exposure):

• As in Discovery 3, assume $30,000 across dental, hearing, vision over 25 years.

• Add at least $30,000–$50,000 of self‑funded long‑term care/home‑care episodes (conservative relative to many real cases).

Putting these together, a conservative combined figure is roughly:

• $71,220 (premiums) + $22,000 (deductibles/coinsurance) + $60,000 (uncovered care) ≈ $153,220.
• Using the broader Fidelity benchmark of $172,500 for a typical 65‑year‑old’s health costs beyond Medicare and the couple estimate of $315,000–$428,000, Linda’s individual lifetime exposure is realistically around $200,000 in total health‑care spending tied to Medicare and its gaps.

What to do about it

1. Audit your Medicare premium and coinsurance exposure

1. Action: Review how much of your retirement income will be eaten by Part B and Part D premiums and 20% coinsurance.
2. Tool/portal: Medicare.gov – Costs page and the official Medicare Plan Finder (on Medicare.gov). You’ll find:

• The current Part B standard premium ($202.90/month in 2026).
• Average Part D premiums and deductibles (e.g., $34.50/month average and $615 annual deductible in 2026).

3. Steps:

• Log onto Medicare.gov and navigate to the “Costs” section to confirm your Part B premium and deductible.
• Use the Plan Finder to pull your current Part D plan and see its monthly premium and annual deductible.
• List your expected annual health‑care usage (e.g., number of specialist visits, therapies) and multiply by 20% to estimate annual coinsurance under Original Medicare.

4. What “good” looks like:

• You know your exact monthly and annual Medicare premiums and deductibles.
• You have a number for your expected annual 20% coinsurance (e.g., “I’m likely to pay about $800/year in coinsurance”).
• You can compare this against your retirement income and decide if you need a Medigap or different Advantage plan to cap costs.

2. Run your prescriptions and check for formulary and IRMAA risk

1. Action: See if your current or future income will trigger higher Part B/D premiums and if your medications are at risk of sudden price jumps.
2. Tool/portal:

• Medicare.gov Plan Finder for drug costs.
• Social Security/Medicare IRMAA tables (available on official SSA/Medicare resources) to see income thresholds and surcharges.

3. Steps:

• On Medicare.gov, enter your prescriptions and preferred pharmacy in the Plan Finder to see actual monthly and annual costs across Part D plans, including premiums, deductibles, and copays.
• Review each plan’s formulary notes and tiers to identify drugs in higher tiers that could jump in cost if the plan makes mid‑year changes.
• Compare your modified adjusted gross income (MAGI) to IRMAA thresholds; if you’re near a threshold, consider how an extra $80–$475/month (Part B) and $14–$91/month (Part D) surcharge would affect your budget.

4. What “good” looks like:

• Your chosen Part D plan has stable formulary coverage for your key drugs and reasonable copays.
• Your income is below the IRMAA threshold or you’ve planned for potential surcharges.
• You avoid surprise premium jumps because you know your IRMAA risk range.

3. Map out uncovered services and decide on supplemental coverage

1. Action: Identify which vital services Medicare won’t cover and decide whether to self‑insure, buy Medigap, or use Medicare Advantage with caps.
2. Tool/portal:

• Medicare.gov – What’s not covered sections.
• Medicare Plan Finder to compare Medigap and Medicare Advantage plans’ out‑of‑pocket maximums and extra benefits.

3. Steps:

• Review the official list of non‑covered services (e.g., routine dental, vision, hearing aids, long‑term care) on Medicare.gov.
• Estimate your likely lifetime use of these services (e.g., hearing aids twice, dental work every decade) and assign rough market prices to see a total exposure figure (often tens of thousands of dollars).
• Use the Plan Finder to compare:
• A Medigap policy (e.g., Plan G) that largely covers the 20% coinsurance and limits your exposure.
• A Medicare Advantage plan’s maximum out‑of‑pocket (MOOP), which often ranges $3,000–$5,900 in some HMOs for in‑network services.

4. What “good” looks like:

• You either have a Medigap or Advantage plan that caps your annual out‑of‑pocket (e.g., MOOP below $4,000–$5,900).
• You have a separate strategy (savings or insurance) for dental, vision, hearing, and long‑term care costs.
• Your total projected annual health spending fits within your retirement budget.

A myth worth clearing up

Myth: “Once I qualify, Medicare will cover almost all my health care and it will be basically free.”

Fact: Most people get Part A with no premium, but still pay $202.90/month for Part B, plus Part D premiums, deductibles, copays, and 20% coinsurance with no out‑of‑pocket maximum, and Medicare does not cover common needs like routine dental, vision, hearing, and long‑term care. A 65‑year‑old is estimated to need $172,500 for health costs beyond Medicare, and couples face $315,000–$428,000 in lifetime costs that Medicare alone will not cover.

Sources

• https://www.medicare.gov/basics/costs/medicare-costs

Researched 2026-07-15.

Corrections & disclosure: an AI-assisted, human-reviewed guide. Every figure is dated and sourced above. Spot something out of date or wrong? Tell us and we’ll correct it — corrections are noted here and in the video description.