There are situations where employees pay more than their fair share of OASDI taxes. Parker says this can happen if you work two jobs that each total more than the maximum taxable earnings.  If, in 2022, you earn more than $147,000 from two jobs, you may end up overpaying because jobs are required to withhold the 6.2% of your earned income. Since both of your jobs have separate human resource departments and will presumably not communicate about your earnings, you may end up overpaying in OASDI tax. The excess OASDI taxes are treated as an additional payment on your federal tax return so they will either increase your refund or reduce any balance due.