If Oregon was your permanent home (your domicile) when you started consulting, and you have not established a permanent home elsewhere, Oregon will still consider you a resident for tax purposes, and ALL your income will be subject to OR taxation. http://www.oregon.gov/DOR/programs/individuals/Pages/what-form.aspx
In addition, non-resident states can tax you on income you earn from physically working within their borders, if your income in the particular state exceeds its filing threshold for your filing status. You can find the filing threshold for each state by going to its tax website. Filing thresholds can vary greatly from one state to another.
On your OR tax return, you'll be able to take a credit for taxes paid to other states on income that is also taxed by Oregon. This avoids double taxation.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
