就像2023年， 就是你工資是1米， 但是交社安稅的基數是118，500， 超過部分是沒有社安稅的

The employee tax rate for Social Security is 6.2% — and the employer tax rate for Social Security is also 6.2%. So, the total Social Security tax rate percentage is 12.4%. Only the employee portion of Social Security tax is withheld from your paycheck. The 2023 wage-base limit is $118,500.