回複：回複：回複：回複：No, but pay starts with H1B

After 62, I am not sure about the number. Seem they increase it every few years. But answer the question before. You don't have to withhold FICA while you work under OPT. once your change your status to H-1B, then you has to pay those taxes. FICA ssn about 0.124 half contribute by employee, and other half contribute by employer. Medicare about 0.029 also half half