If you're talking about income taxes, around the end of this month you will receive a W-2 form sent by your employer. If you want to know before then, find the pay stub from the last paycheck you got in calendar year 2011. There should be a section for "Deductions". Your taxes withheld can be found in the "Year to Date", or YTD column. It probably will have the words Federal Income Tax, but it may have the word FICA. Same thing.