Is there a dollar amount limitation on the Medicare component of the FICA tax?

The Medicare component of the FICA tax does not have a dollar amount limitation. This portion of the tax applies to all earned income without a cap, meaning that every dollar earned is subject to the Medicare tax rate. This characteristic distinguishes it from the Social Security portion of FICA, which has an income cap, meaning that income over a certain threshold does not incur additional taxation under that component.

The absence of a limitation on the Medicare tax is significant since it reflects policy intentions to provide funding for Medicare services without regard to a taxpayer's income level. All earnings contribute to the Medicare system, which is crucial for ensuring healthcare benefits for eligible individuals. Hence, regardless of the income level—whether it's low or high—the Medicare tax applies uniformly across all earned income.