<<Can I claim my income from March - December was earned in Idaho and pay Idaho's lower rate?>>
Yes, that is exactly what you should do. The income you earned by working remotely in ID is taxable only by ID, not by OR. OR does not tax non-resident remote workers who work outside the state.
Only the income you earned by physically working in OR is taxable by OR. ALL your income is taxable by your home state of ID. On your non-resident OR return, allocate only the income you earned when you were actually working in OR.
You'll be able to take a credit on your ID return for the taxes paid to OR on the portion of your income that is taxable by both states. In TT, be sure to complete your non-resident state return first, before you do your home state return, so that the credit is applied properly.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
