You can check the input of your W-2, to make sure that there's not a data entry error. To check:
For Windows:
1. Click Federal Taxes across the top.
2.
Click Wages & Income
across the top.
3.
Click I’ll choose what I work on.
4.
Scroll down to Wages and Salaries.
5.
Click Start or Update by Wages and Salaries.
For online:
1.
Click Federal on the left-hand side menu.
2.
Click Income across the top.
3.
Scroll down to Wages and Salaries and
click Show more.
4.
Click Start or Revisit by Wages
and Salaries.