Here are the Oregon instructions:
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To speed processing, put your Oregon return together as follows (important—don’t attach these documents together or use staples, paperclips, or tape to assemble your return):
1. Start with Form OR-40.
2. If applicable, place these items in the following order behind your Form OR-40:
Form W-2s and any Form 1099s showing Oregon tax withheld.
Schedule OR-A.
Schedule OR-ASC.
Schedule OR-ADD-DEP.
Schedule OR-DONATE.
Schedule OR-529.
Form OR-10.
Schedule OR-WFHDC.
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Form OR-24.
• Your RDP’s Oregon return, if you’re filing separately. Don’t staple the returns together.
3. Copy (front and back) of your federal Form 1040 and Schedules 1 through 5 (if applicable), 1040X, 1040NR, or 1040NR-EZ. If you’re filing using an “as if” federal return, include the “as if” return. Write “as if” in blue or black ink on the top left corner of your “as if” federal return. Also, include a copy of the federal return you actually filed.
4. If you’re amending your return, include a copy of the federal or other state’s corrected return or audit report. If you're amending your Oregon return only, attach the federal or other state’s original return.
5. Include your check or money order and completed Form OR-40-V payment voucher. If you’re paying by credit card or electronic payment, don’t use Form OR-40-V.
Be sure all pages of your return are from the same form. For example, if you file Form OR-40, be sure that “2018 Oregon Form OR-40” is printed at the top of each page.
Include federal Schedules 1 through 5 (if applicable to your Form 1040), but don’t include extension requests or any other federal schedules with your Oregon return. Keep these with your records. We receive some federal information from the IRS. We may ask for copies of other schedules or additional information later.
Oregon's instructions (page 21):
https://www.oregon.gov/DOR/forms/FormsPubs/publication-or-40-fy_101-043_2018.pdf
If you have other questions about this, ask in the comment section below.
