RaifH,
I think I've figured this out. I claimed part of my home as a self-employed business expense. So Turbotax computed the home mortgage interest applicable to my business (Form 8829) for inclusion on Schedule C. It then put the remaining mortgage interest on Schedule A, line 8b. The bad news is Turbotax does not explain this, nor does it update the Home Mortgage Interest Worksheet accordingly. This is a bug in Turbotax. I had to figure this out manually, i.e., I multiplied the % of home square footage used for business times the total mortgage interest, and the remaining mortgage interest -- the portion not allocated to business use -- matched the figure on Schedule A, line 8b.
In any case, thank you for your reply.
