Can anyone help me with a US tax/W-4/federal withholdings calculation question? →[More:]I got a really big refund last year, but I also only earned wages for part of the year, so I'm trying to figure out how many allowances to claim on my W-4. I'm using the
IRS Withholding Calculator
On page 3 it asks for the "total Federal income tax withheld to date in 2007" and the "Federal income tax withheld from your last salary payment". My paystub has 3 tax deductions - WH Tax, SS Tax, and Medicare. Do I just use the WH Tax number or do I include Social Security and Medicare taxes in the "total federal income tax witheld"?