W2 box 4 does not equal 6.2% of box 3. Why?

[VolvoGirl]

It should.  What amounts are in box 3 & 4?  Are you getting an error?  Try leaving the cents off of box  4.  If box 3 or 4 is wrong you have to ask your employer and get a corrected W2.  

Box 4 should be 6.2% of box 3 up to a max of $10,453.20. So take the amount in box 3 and multiply it by .062. If box 4 is more than that you need to get a corrected W2 from your employer. But also go back and double check your W2 entries, you may have entered box 3 & 4 wrong. A lot of people who have asked this found they did enter an amount wrong.