I have the same issue. Turbo Tax effectively includes my wife's Washington income when calculating my Oregon Tax rate. We are married filing jointly. I use the Oregon non-resident return...WA has no income tax and so there is no WA return to file. This has happened for the past few years and each year Turbo Tax has me owing Oregon money yet each year Oregon sends me the over payment back. Any thoughts as to why Turbo Tax would increase my Oregon tax owed after I add my wife's Washington income?
