You will not need to file in Oregon according to this page about the military: Residents stationed outside Oregon You're a nonresident for Oregon tax purposes if you meet all of the following requirements:
You didn't have a permanent residence in Oregon for yourself or your family during any part of the tax year.
Your permanent residence was outside Oregon during the entire tax year.
You spend less than 31 days in Oregon during the tax year.
You'll only owe Oregon tax if you had income from other Oregon sources. If you have to file a return, use Oregon Form OR-40-N. Full text from Oregon:
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It depends. What you will have to do is file a California return with a zero income. To do so, do not change any entries on the W2 screen. However, in the California return, use the allocation screen to report that the income in California as a nonresident is $0. This may create an e-file diagnostic that might not allow you to e-file. If this happens, you will mail in the California return with the words: MILITARY SPOUSE, RESIDENT OF OREGON across the top to receive a full California refund. But without overriding the CA income to $0, the program will treat the amount being reported to California as taxable in California. However, you are entitled to receive a full refund of your California taxes withheld, because they were withheld in error.
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