 Do you remember the last four months of 2020 when your paychecks were larger than normal? That's because social security taxes were not taken out. Now, it's time to start paying those taxes again and repay those from the end of 2020. However, repayments will be in smaller amounts each paycheck, over the course of 12 months. Those separating or retiring before December 30th, 2021, will have the balance of the taxes deducted from their last paycheck. Check your LES and the notes section to see what's being taken out.