If you're a Medicare beneficiary trying to figure out what healthcare is actually going to cost you — not just this year, but as you age — the honest answer is that it depends enormously on three things: how old you are, where you live, and which type of Medicare coverage you've chosen. The average 67-year-old in Texas faces a very different financial picture than a 78-year-old in Minnesota, even if both are enrolled in Medicare Advantage plans with $0 premiums. Understanding why requires looking past the monthly premium and into the full cost structure of American healthcare for older adults.
Across the country, per-capita healthcare spending for adults 65 and older averages roughly $13,000 to $15,000 per year when you combine what Medicare pays and what beneficiaries pay out of pocket. But that average masks enormous variation. Beneficiaries in their late 60s who are relatively healthy typically spend between $3,000 and $5,000 per year out of pocket — covering premiums, copays, deductibles, and any services not covered by their plan. By the mid-70s, that figure commonly climbs to $5,000–$7,000 annually. For those in their 80s managing multiple chronic conditions, $10,000 or more per year in out-of-pocket costs is not unusual, particularly for beneficiaries in Medicare Advantage plans that charge significant cost-sharing for specialist visits, hospital stays, and post-acute care like skilled nursing facilities.
State-level variation in healthcare costs is driven by several overlapping factors: the cost of living, the density of healthcare providers, state insurance regulations, and the competitiveness of the local Medicare Advantage market. In 2025, the average Medicare Advantage plan premium nationally was approximately $17 per month — but that figure is almost meaningless on its own. In high-cost states like New York and Massachusetts, many beneficiaries pay $80–$150 per month for Medicare Advantage plans that offer richer benefits and lower cost-sharing. In states like Florida, Georgia, and parts of the South, $0-premium plans are abundant, but those plans often come with higher copays — sometimes $350 or more per inpatient hospital day — that can add up fast if you're hospitalized. A five-day hospital stay in a $0-premium plan with a $350/day copay costs you $1,750 out of pocket. The same stay under Original Medicare with a Medigap Plan G supplement, which covers the Part A deductible of $1,676 in 2025 and all cost-sharing after that, would cost you nothing beyond your monthly Medigap premium.
The Medicare Advantage out-of-pocket maximum is a critical number that most beneficiaries don't pay enough attention to. In 2025, CMS caps the in-network out-of-pocket maximum for Medicare Advantage plans at $9,350 per year, and the combined in-network and out-of-network maximum at $14,000. But plans can set their maximums anywhere below those caps — and many do. A plan with a $9,000 out-of-pocket maximum is technically compliant, but if you're 80 years old and managing heart disease, diabetes, and arthritis, you could realistically hit that ceiling. By contrast, Medigap Plan G — the most popular supplemental plan sold today — effectively eliminates most out-of-pocket costs after you pay the Part B deductible of $257 in 2025. The tradeoff is that Medigap premiums are significantly higher, often ranging from $120 to $300 per month depending on your age and state, and they increase as you get older.
That age-based premium increase in Medigap is one of the most underappreciated cost factors for beneficiaries. Most states allow Medigap insurers to use "attained-age" rating, meaning your premium rises every year as you get older. A 65-year-old woman in Ohio might pay $130 per month for Plan G. By the time she's 75, that same plan from the same insurer could cost $200 or more per month. Over a decade, that's a substantial increase in fixed monthly costs — which is why some beneficiaries who start with Medigap eventually switch to Medicare Advantage as they age and their Medigap premiums climb. However, switching from Medigap to Medicare Advantage is generally easy, while switching back is not — in most states, insurers can deny you Medigap coverage or charge you more based on your health history if you're outside a guaranteed issue window.
Thirteen states currently offer what's known as a "birthday rule" — a 30-day window each year around your birthday during which you can switch to a different Medigap plan of equal or lesser benefit without medical underwriting. Those states are California, Idaho, Illinois, Kentucky, Louisiana, Maine, Maryland, Missouri, Nevada, New Jersey, New York, Oklahoma, and Oregon. If you live in one of these states and you're currently in a Medigap plan, your birthday window is a valuable annual opportunity to shop for a lower premium without risking denial. Beneficiaries in other states who want to switch Medigap plans outside of guaranteed issue periods — such as when they first turn 65 or lose employer coverage — can be subject to medical underwriting and potentially denied coverage or charged higher rates based on pre-existing conditions.
For beneficiaries enrolled in Medicare Advantage, the Annual Enrollment Period running from October 15 through December 7 each year is the primary window to review and change plans. This matters enormously because Medicare Advantage plans change their premiums, formularies, provider networks, and cost-sharing structures every single year. A plan that worked well for you in 2024 may have added a new prior authorization requirement for your specialist in 2025, or dropped a drug you rely on from its formulary. CMS data consistently shows that a significant percentage of Medicare Advantage enrollees never review their plan during AEP — and many of them are paying more than necessary or receiving fewer benefits than they could get by switching. The Medicare Plan Finder tool at Medicare.gov allows you to enter your specific prescriptions and preferred doctors to compare total estimated annual costs across all plans available in your zip code.
Low-income beneficiaries have additional options that can dramatically reduce healthcare costs regardless of age or state. The Medicare Savings Programs — funded jointly by federal and state governments — can pay your Part B premium of $185 per month in 2025, your Part A premium if you haven't worked enough quarters to receive it premium-free, and in some cases your deductibles and copays. Eligibility thresholds vary by state, but the Qualified Medicare Beneficiary program generally covers individuals with incomes up to roughly 100% of the federal poverty level. The Extra Help program for Part D prescription drug costs is available to beneficiaries with incomes up to 150% of the federal poverty level and can reduce drug costs to as little as $0–$11.20 per prescription in 2025. Many eligible beneficiaries never apply for these programs — your State Health Insurance Assistance Program, known as SHIP, offers free one-on-one counseling to help you determine what you qualify for and how to apply.
The bottom line for beneficiaries thinking about long-term healthcare costs is this: the decision you make at 65 about Original Medicare versus Medicare Advantage, and about whether to add a Medigap supplement, will compound financially over the decades ahead. A 65-year-old who chooses a $0-premium Medicare Advantage plan may save money in their healthier years, but face much higher costs if they develop serious illness in their 70s or 80s — particularly if their plan's network has narrowed or their out-of-pocket maximum is near the federal ceiling. Conversely, a 65-year-old who buys Medigap Plan G will pay more upfront but may find that their costs are far more predictable as they age. Neither choice is universally right. What matters is making the decision with full information about your state's rules, your health history, and the specific plans available where you live — and revisiting that decision every year during open enrollment.