Why does line 8 on Form 8829 show negative amount?

  • I have the same problem.  It should be pulling from Sch C line 29 and that is a positive number.
Mine is a negative amount. That is because I have a loss. It is negative amount on Line 29 on Schedule C and flows forward.

Double check if you have entered gross profits/receipts on Schedule C.
    There was a problem in line 8 of 8829, which was showing a negative number because in Schedule C TurboTax listed the percentage of income from home office use as only the percentage of office space instead of 100%. We had to run through the home office section again and found TurboTax had unchecked the box for "I do all of my business from home". After you fix this, you should see 100% listed for percentage gross income from use of home on Schedule C, which will carry over to 8829 and fix the problem.
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