I filed married with no deductions on my W4. What's the percent that will be taken out of my check?

Answer 1

There isn't a flat percentage. The amount taken from your check depends on how much you earned and how often you get paid. The reason it is graduated is because the US income tax system is graduated....the more you earn, the higher percentage you pay.

That being said, your company follows federal guidelines to determine how much to withhold.

Check out Publication 17 (attached) starting on page 37.

Answer 2

It's not a straight percent - it depends on the amount of your gross pay for that pay period.