OR-20: Form OR-20, Oregon Corporation Excise Tax Return (2025)
Oregon · Oregon DOR · Used for tax years 2025
Form OR-20 is Oregon’s Corporation Excise Tax Return for 2025. It reports corporate taxable income, Oregon additions and subtractions, income apportionment, deductions, and excise tax before credits.
What you'll need
Include a complete copy of your federal Form 1120 and its schedules.
Depending on the entries on your return, you may also need:
- Schedule OR-ASC-CORP for additions, subtractions, and credits.
- Schedule OR-AP if you apportion income.
- Supporting schedules for net loss and net capital loss deductions if you do not apportion income.
- Schedule OR-FCG-20 if you report that adjustment.
- Supporting schedules for tax adjustments and withholding payments made on your behalf from pass-through entity or real estate income.
- Form OR-37 if you report interest on underpayment of estimated tax.
- A schedule for affiliates protected by PL86-272, if applicable.
Have your payment details ready for Schedule ES, including amounts paid, payment dates, payer names, and payer FEINs. It also asks for prior-year overpayments applied to this year's tax, extension payments, other prepayments, and refundable credits.
How to file
Complete the return using uppercase letters and blue or black ink. Print it at actual size (100%). Complete the officer signature and date fields and, if applicable, the preparer signature and date fields.
Mail refund returns and returns with no tax due to:
Refund
PO Box 14777
Salem OR 97309-0960
Mail returns with tax to pay, along with payment, to:
Oregon Department of Revenue
PO Box 14790
Salem OR 97309-0470
Do not include a payment voucher with your return. Include a complete copy of your federal Form 1120 and schedules.
Common mistakes
- Do not submit photocopies of Form OR-20 or use staples. The form separately requires a complete copy of your federal Form 1120 and schedules.
- Use uppercase letters, blue or black ink, and actual-size printing (100%).
- Do not include a payment voucher with the return.
- Complete questions A through C only if this is your first return or an answer changed during the tax year.
- Include Schedule OR-AP if you apportion income. If you do not apportion income, enter 100.0000 on line 8.
- Enter the deductions on lines 6 and 7 as positive numbers and include the supporting schedules.
- Include payments made with an extension in the payments reported on line 23.
- Do not reduce lines 18 or 20 below the minimum tax.
Questions people ask
What if the corporation has income from Oregon and other states?
The form directs you to carry line 5 to Schedule OR-AP, part 2, line 1. You must include Schedule OR-AP to apportion income, and enter its part 1, line 23 apportionment percentage on Form OR-20, line 8.
Can a refund be applied to estimated tax?
Yes. Line 33 lets you enter the amount of your refund to credit to your open estimated tax account. Subtract that amount from line 32 to find the net refund on line 34.
Where do I report extension payments?
Report extension payments or other prepayments for this tax year on Schedule ES, line 6. Schedule ES, line 8 totals prepayments and refundable credits and carries to Form OR-20, line 23.
Can I authorize someone to discuss this return with the department?
Yes. Page 7 has a checkbox to authorize the listed individual or individuals to receive and provide confidential tax information relating to the return.