<prompt> Human: Im 26 and have been in the workforce for several years and have been making approximately the same amount for the past two years 50k. I have filed Single 1 on all past W4s and have consistently received a refund back. This year, when I filed through TurboTax, which Ive always done, I now owe almost 2k which seems absurdly high.I cant figure out what changed to not only prevent me from receiving a refund, but actually cause me to OWE two grand to the IRS. Should I be claiming 0 deductions this year? Should I seek out a tax professional? I wasnt planning on owing anything and am definitely not prepared and would appreciate any advice.  <response>: Print your 2016 and 2017 returns and compare them side-by-side.What changed? 