Actually, your W-2 reports your wage data information only. There is no taxable interest figure to be found there, and so no W-2 box in which interest income would appear.
Do you have a savings account (which pays you interest), or do you own a brokerage account with investments? Or did you own any other interest-bearing instrument during the tax year, such as a Certificate of Deposit or a bond mutual fund, for instance? If you did, then you should have received a document known as Form 1099-INT. This Form 1099-INT would show your taxable interest (and we could determine Oregon taxable interest from that, along with knowing your Oregon residency status: full-year, part-year or nonresident). Absent such an interest reporting document, you should have no taxable interest to input on your Oregon tax return or otherwise, and would then just enter $0 (or leave the field entirely blank).
If your question has been somehow misunderstood, or if you have any additional information to offer about it, please feel free to update this post and we'll attempt to assist you further.
Thank you for asking about this.
