<prompt> Human: I ignorantly claimed 2 on my W-4 when I shouldve claimed 0. Last year while filing with my wife, we had to pay around 2,400. Im not sure why it shot up so high this year, we did earn more this year but 2,400 to 7,800 is a big jump. When playing around with filing single or married, I have to pay 5,800 or 7,800. She claimed 0 on her W-4 as well. Not sure what to do, I am going to see a tax CPA tomorrow to see what my options are. I do have a lot of work expense I can use as itemized deductibles.I just changed my W-4 to 0 and additional 50 per paycheck so this doesnt happen next year.on my W-2 i made 120k federal income 17.5k Social Security 7.2k Medicare 1.7kAssistant: Are you claiming married on the w4? If so, thats your problem. Human: Yes I was claiming married, however I recently changed it to Single this year.  <response>: are you married or not? Married filing separately is the best way to get shafted. 