Oregon — Oregon S Corporation Tax Return
More about the Oregon Form 20-S
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File Now with TurboTaxWe last updated Oregon Form 20-S in January 2026 from the Oregon Department of Revenue. This form is for income earned in tax year 2025, with tax returns due in April 2026. We will update this page with a new version of the form for 2027 as soon as it is made available by the Oregon government.
Other Oregon Corporate Income Tax Forms:
In addition to information about Oregon's income tax brackets, Tax-Brackets.org provides a total of 51 Oregon income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used Oregon tax forms:
| Form Code | Form Name |
|---|---|
| Form 65 | Oregon Partnership Return of Income |
| Form 41 | Oregon Fiduciary Income Tax Return |
| Form 20 | Oregon Corporation Excise Tax Return |
| Form 20 Instructions | Form 20 Instructions |
| Schedule K-1 | Distributive Share of Income Schedule |
View all 51 Oregon Income Tax Forms
Disclaimer: While we do our best to keep Form 20-S up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!
Tax Form Sources:
- Oregon Department of Revenue ( http://egov.oregon.gov/DOR/ )
- Department of Revenue Income Tax Forms ( http://www.oregon.gov/DOR/forms/Pages/default.aspx )