You will have to file an Oregon non-resident return if you lived an worked in Washington all year. How do I file an Oregon non-resident return? Generally, you’ll need to file a nonresident state return if you made money from sources in a state you don’t live in.
Some examples are:
- Wages or income you earned while working in that state
- Out-of-state rental income, gambling winnings, or profits from property sales
- S corporation or partnership income
- Beneficiary income from a trust or estate
- For active duty military: non-military income earned outside your state of legal residence
- If your employer withheld taxes for the wrong state
See Remote Workers