Key Points Most Medicare enrollees don't pay a premium for Part A. There are still deductibles and coinsurance to worry about. Part A costs are up in 2026, so it's important to know what to expect. The $23,760 Social Security bonus most retirees completely overlook › If you're enrolled in Medicare, you probably don't pay a premium for Part A, which covers hospital care. But that doesn't mean Part A is totally free. The costs associated with Medicare Part A tend to rise from year to year, and 202 ...