This article explains how to clear W-2 boxes 3-6.
Why Are Boxes 3-6 Empty?
After inputting the wages in box 1 of Form W-2, you may notice that the auto-populated amounts in boxes 3-6 may be different. This is common if the taxpayer has retirement or other items deducted from their pay.
Removing Amounts From Boxes 3-6
Place an “X” in the box in the top corner of boxes 3-6 as needed.