An employee has total YTD wages of $250,000.

The employer’s FICA liability consists of two parts: Social Security tax (6.2%) and Medicare tax (1.45%). Social Security tax is only withheld and matched by the employer until the employee ' s year-to-date (YTD) wages reach the annual wage base limit (e.g., $168,600 for 2024). In this scenario, the employee’s YTD wages are already $250,000.00, which is well above the limit. Therefore, no Social Security tax applies to the final $10,000 payment. However, there is no wage base limit for Medicare tax. The employer must match the 1.45% Medicare tax on all wages paid. Calculation: $\$10,000 \times 1.45\% = \$145.00$. Note that while the employee may owe the 0.9% Additional Medicare Tax because their wages exceed $200,000, the employer does not match this additional tax. Thus, the total employer liability is $145.00.