<prompt> Human: A few weeks ago, I completed my taxes but did not submit as I was waiting for the health insurance form just in case I realize now I didnt need it.nbsp;Today, I logged back in to submit it so I could get my 1300 federal refund and when I logged in, it now says I owe 6500 in federal taxes. Has this happened to anyone else? I am doing my best not to hyperventilate.nbsp;Also, I probably shouldnt have, but in my daze of freaking out I cleared it all so I could start over. Just want to know if anyone knows what could cause this. To my knowledge, I have not changed anything since then nor does anyone have my login information.  <response>: Turbo Tax is not a mysterious black box that spits out a number for you. All it is doing behind the scenes is filling out a 1040 form for you, just as you would if you did it by hand. Its based on the facts of your income and withholdings for the year, which do not change. Surely turbo tax allows you to view preview the 1040 form it makes for you in a pdf format. Just look at it and see if the numbers are correct. I have no idea why the number changed, but the answer is almost surely that you simply didnt save something last time you were logged in. Maybe a whole jobs W-2 got deleted some how. It should be very easy to just look at the numbers and figure it out. 