Turbotax is following IRS rules. form 8829 can only be used for HO expenses properly reported on schedule C. The Turbotax fix was to provide for a separate asset entry worksheet for HO expenses for schedule C (see below) Turbotax will not allow form 8829 to be used for any other form nor will it calculate a HO deduction for any other form. this will require you to delete asset entry worksheet currently using type O and then renter info in the HO section for schedule C.
for Schedule C go to the Wage & Income tab scroll down to
Business Items > Business Income & Expenses (Sch C)
click on the link to start or update
as you go through in step-by-step you'll come to a page that says "Business Expenses" at the bottom is the link to enter home office expenses. This will require reentry of the HO info from the prior year. Only the asset entry worksheet under the HO expense category allows you to select type M or N for depreciable asset assets
for any other form PUB 587 must be used to figure your deduction. enter as other expense on the appropriate form. there is no other workaround. No supporting form is required but keep the calculations and support in case you're audited.
Note employees cannot take a HO deduction (2018-2025) for federal purposes and there are special rules if the HO expenses involve the activities of a corporation or partnership.
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