Medicare Part B 2026 Premium
The standard premium is one number; your premium can be a very different one. This is the 2026 bill, the deductible, the 2027 late-enrollment price, and the income test that decides it.
The surcharge test uses the tax return filed two years earlier: the 2026 surcharge reads your 2024 return, and the 2027 surcharge reads your 2025 return. MAGI is AGI plus tax-exempt interest, so a Roth conversion in that earlier year can raise your premium two years later.
How the math works
- Standard premium 2026: $202.90 a month, up from $185.00 in 2025. The annual deductible is $283.00, up from $257.00.
- Income surcharge thresholds (MAGI): you pay the standard premium only at $109,000 and under for a single filer, $218,000 and under filing jointly. Above those, a surcharge is added on top.
- With a surcharge, the total Part B cost runs from $284.10 to $689.90 a month depending on which bracket your MAGI lands in, per CMS figures. The Social Security Administration assigns the exact bracket from your two-year-old return.
- Late enrollment: the full 2027 premium for people who pay 2026's bill late is $565.00 a month. A 10% lifetime penalty per full 12 months without coverage also stacks on.
- Annual cost shown here is 12 months of premium plus the deductible, the number most people actually pay for Part B in a year.
What is the 2026 Medicare Part B premium?
$202.90 a month for the standard premium, with a $283.00 annual deductible. That is $17.90 a month and $26 of deductible more than 2025. Higher-income enrollees pay a surcharge on top of the standard premium.
Who pays the income-related surcharge?
Single filers with modified AGI above $109,000, and joint filers above $218,000. The test looks at the tax return from two years before the year you pay, so the income you report on your 2024 return sets your 2026 premium. A big Roth conversion, a home sale, or a 401(k) cash-out two years earlier can raise it.
What happens if I miss my enrollment window?
You pay the full premium, which for 2027 is $565.00 a month, and you carry a 10% late-enrollment penalty for each full 12 months you went without Part B for as long as you have Medicare. Coverage by an active employer plan of 20+ employees is the common reason a window is not urgent.