Where do I send my amends return to, from Oregon?

For the address to send your federal amended return, please see "Where To File" on page 18 of the Instructions for Form 1040X..

As for your amended Oregon return:

If you owe tax, mail to:

Oregon Department of Revenue

PO Box 14555

Salem OR 97309-0940

If you are expecting a refund or owe no tax, mail to:

REFUND

PO Box 14700

Salem OR 97309-0930

What forms do I need to send with my payment ?

You will mail the amended form 40-x along with any other forms that have been changed from the original. Itemized deductions, credits, etc should all be checked. Be sure you have an explanation of the change on the 40-x. If you are amending because you received a tax form with OR tax withheld, you will want to send that as well. For example, you may have gotten another W2 after filing the original.