How FICA Taxes Work – Social Security & Medicare

Understand FICA taxes: Social Security (6.2%) and Medicare (1.45%). Learn about wage caps, the additional Medicare tax, and how FICA affects your take-home pay.

FICA Tax Rates 2025

TaxEmployee RateWage Base
Social Security (OASDI)6.2%$176,100
Medicare (HI)1.45%No limit
Additional Medicare0.9%Over $200,000

Your employer matches the 6.2% Social Security and 1.45% Medicare, but does not match the additional 0.9% Medicare tax.