I ran into the same boat with being best off taking the Standard Deduction for Federal and itemizing for Oregon, but not being able to figure out how to do it on TurboTax. I filled in all my itemization numbers from my 1098 in TurboTax and it said the standard deduction was the best deal for Federal, so I picked that one. However, when I switched from the federal to the state return, it didn't give me any options to add new forms or chose the itemize state option. After poking around on the TT site with no luck, I ended up filling out the Oregon Schedule A and Oregon 40 forms on the free efile on the Oregon tax site, and they accepted my efile quickly. I had to retype all my information over, but it was worth the extra time to save the money. It would be nice to know the "trick" to make it work on TT for next year.
