What Medicare Will Cost You Out of Pocket in 2026

If you're on Medicare in 2026, you're navigating a cost structure that hasn't gotten simpler with age. Original Medicare — Parts A and B — still leaves significant financial exposure that surprises many beneficiaries who assumed they'd be largely covered once they turned 65. Understanding exactly what you'll owe, and where the real risks lie, is the first step toward protecting your retirement income.

Let's start with Part A, which covers hospital stays. In 2026, the Part A deductible is $1,676 per benefit period. That phrase 'benefit period' is where people get tripped up. It doesn't reset on January 1st like a calendar year deductible. A new benefit period begins each time you're admitted to a hospital after being out of inpatient care for 60 consecutive days. In theory, if you have two separate hospitalizations separated by more than 60 days, you owe that $1,676 deductible twice. For a beneficiary with a serious chronic condition — heart failure, COPD, cancer — multiple benefit periods in a single year are not hypothetical. They're common. Beyond the deductible, Part A also charges coinsurance for longer stays: $419 per day for days 61 through 90, and $838 per day for so-called 'lifetime reserve days' beyond that. Original Medicare provides zero coverage after 150 days in a hospital. This is precisely the exposure that Medigap Plans G and N were designed to address.

Part B costs in 2026 center on a standard monthly premium of $185.00 and an annual deductible of $257. After you meet that deductible, Medicare typically covers 80% of approved outpatient costs — leaving you responsible for the remaining 20% with no cap. That uncapped 20% coinsurance is one of the most underappreciated risks in Original Medicare. A single outpatient surgery, a course of chemotherapy, or ongoing specialist visits can generate coinsurance bills that add up to thousands of dollars over a year. Higher-income beneficiaries also face Income-Related Monthly Adjustment Amounts, known as IRMAA. In 2026, individuals with modified adjusted gross income above $106,000 (or $212,000 for married couples filing jointly) pay more than the standard Part B premium — in some cases more than $600 per month. If you had a high-income year two years ago due to a home sale, Roth conversion, or required minimum distributions, you may be subject to IRMAA this year even if your current income is lower. You can appeal an IRMAA determination through the Social Security Administration if your income has since dropped due to a life-changing event.

The biggest structural change to Medicare drug coverage in 2026 is the implementation of the $2,000 annual out-of-pocket cap on Part D prescription drug costs, a provision of the Inflation Reduction Act. Before this change, there was effectively no ceiling on what a beneficiary could spend on drugs in a given year — the old 'catastrophic' threshold required you to spend thousands before coverage improved. Now, once you've paid $2,000 in covered drug costs in 2026, your plan covers 100% of additional drug costs for the rest of the year. For beneficiaries on expensive specialty medications — biologics for rheumatoid arthritis, cancer drugs, multiple sclerosis treatments — this cap can represent savings of tens of thousands of dollars annually. The cap applies to Part D standalone plans and to the drug coverage embedded in Medicare Advantage plans. It does not apply to drugs covered under Part B, such as infusions administered in a doctor's office.

For beneficiaries on Original Medicare, a Medigap policy remains the most straightforward way to control out-of-pocket exposure. Medigap Plan G — the most comprehensive option available to those who became Medicare-eligible on or after January 1, 2020 — covers the Part A deductible, Part A coinsurance, Part B coinsurance, skilled nursing facility coinsurance, and foreign travel emergency care. You pay the Part B deductible yourself ($257 in 2026), and then Plan G covers your 20% coinsurance with no annual limit. Plan N offers similar protection at a lower premium but requires copays of up to $20 for office visits and up to $50 for emergency room visits, and it does not cover Part B excess charges. The right choice between G and N depends on how frequently you use outpatient services and whether your doctors accept Medicare assignment.

Medigap premiums vary considerably by age, gender, tobacco use, and geography — and by how the insurer prices its policies. Community-rated plans charge the same premium regardless of age. Issue-age-rated plans set your premium based on how old you are when you enroll and don't increase solely due to aging. Attained-age-rated plans start lower but increase as you get older and tend to become the most expensive over time. Shopping carefully at the time of enrollment matters enormously because, outside of guaranteed issue windows, insurers in most states can use medical underwriting to deny coverage or charge higher premiums based on your health history. The best time to enroll in Medigap is during your six-month Medigap Open Enrollment Period, which begins the month you turn 65 and are enrolled in Part B. During this window, no insurer can turn you away or charge you more due to pre-existing conditions.

If you're already past that initial window and want to switch Medigap plans, your options depend heavily on where you live. Thirteen states — including California, New York, Oregon, Illinois, and Florida does not have one — have enacted birthday rules or other guaranteed issue protections that give you a window each year to switch to an equal or lesser Medigap plan without medical underwriting. In states without these protections, switching plans after your initial enrollment period typically requires passing medical underwriting, which means a serious diagnosis like diabetes, heart disease, or cancer could make it difficult or impossible to change plans. Knowing your state's rules before you need to use them is essential planning.

The bottom line for 2026: Original Medicare's cost-sharing structure leaves real financial gaps, and those gaps don't shrink as you age — they tend to grow alongside your healthcare utilization. The Part A deductible, uncapped Part B coinsurance, and potential IRMAA surcharges represent predictable risks that Medigap was specifically designed to address. The new Part D drug cap is a genuine win for beneficiaries with high drug costs. Reviewing your total Medicare cost picture annually — not just your drug plan during the Annual Enrollment Period from October 15 through December 7 — gives you the best chance of keeping healthcare costs from derailing your retirement finances.