<prompt> Human: Long story short, I started my job in May of 2012, filled out my W4 how I thought it needed to be filled out and that was that.I ended up owing about 400 in taxes last year, but I figured that it was because I had been a paid intern for 5 months at a company where my check was untaxed.I got my W2 this year and started doing my taxes on TurboTax and it estimated so far that Im going to owe about 1200 in tax. Having no clue why this was, I had a feeling it was simply that I wasnt having enough tax taken out of my check at work. I talked to our HR lady, told her the story and asked to see my W4 that I filled out when I started. Turns out that I had been claiming head of household for a total of 3 personal allowances when really I should only have had 2Im single, unmarried with no dependents.1200 is a lot to pay right now in taxes, and Im claiming as many deductions as I can think of, including student loan interest paid, making sure I count the roughly 300 worth of clothes I donated last year, etc. But is there anything else I could do or deduct to reduce the amount of tax I owe for last year?Any suggestions would be much appreciated. Please let me know if I could include any other information that is pertinent to the situation.Thank you, PF!  <response>: As a side note, you cant claim donations and the standard deduction, so Im assuming all donations you are claiming are being ignored.But yeah, what awstick said, the only way is to contribute to a traditional IRA at this point. 