You cannot eFile an OR Tax Amendment anywhere, except mail it in. However, you can prepare it here on eFile.com.
Option 1: Sign into
your eFile.com account, modify your Return and download/print OR Form 40, 40N, or 40P under
My Account.
Check the Amended return." on the upper left corner of the form to report that it's a tax amendment.
Option 2: If you don't have an eFile.com account follow the step by step
instruction on how to prepare a tax return/amendment.
Option 3: If you want to do the math on your own paper return then complete, sign OR Form 40 (residents) (to be added), 40N (nonresidents) (to be added), or 40P (part-year residents) (to be added) - Print, Mail the Form to OR Department of Revenue:
Refund or No Tax Payment Amended Tax ReturnREFUND
PO Box 14700
Salem OR 97309-0930
Tax Payment Amended Tax ReturnOregon Department of Revenue
PO Box 14555
Salem OR 97309-0940