I haven't done it in (Washington) for so long I really don't know how I would approach entering the data. I basically tell them that it is not going to save any tax and it's going to double the accounting fee (because I'd be doing two returns) and keep talking until I either talk them out of it, or they go somewhere else.

If there is a non tax reason they want to do it (ie trust issues) I just don't want to be involved in that anyway.