In the past I have put 50% for the time spent in the home office, but many years it then has not given me a deduction and I have a huge carry over. A friend who is a CPA said that I should be using 100% of my gross income from line 7 of schedule C since I do not have an office elsewhere. I am now wondering if I should use 100% on my current return and amend the last three years of my returns using that figure. The amount of the home office deduction when using 100% vs. 50% goes from 0 to $12,000. Huge difference.
