No. You don't need to pay or do anything. You employer will withhold or has withheld the additional $80 for Social Security from your 2021 pay amounts. You can go head and ignore the TurboTax warning and continue filing your return. You can ask your Payroll or Human Resources department about the $80 difference in Social Security on your share and when or if it will be corrected sometime in 2021. If you do get a W2c and the only change is in box 4, you do not need to amend your 2020 tax return filled.
