Medicare Funding Relies on Payroll Taxes and Patient Cost-Sharing

Medicare, which began in 1966 to cover people 65 and older, is paid for through lifelong payroll taxes, similar to Social Security taxes. Unlike Social Security, the benefits provided by Medicare are not related to how much an individual has paid into the program. The program is complex, with Parts A, B, and D requiring patient cost-sharing through premiums, deductibles, co-pays, and co-insurance.

The funding structure relies on payroll taxes, linking Medicare to the financial mechanisms of Social Security. This structure is structurally integrated with Social Security, where rules fundamentally determine Medicare eligibility and premium costs. The requirement for patient cost-sharing in Parts A, B, and D means that participants face out-of-pocket costs even after paying Medicare taxes for years.