Challenge an Oregon income or corporation tax notice Government & Benefits Oregon preparation and procedure guide Source review: 2026-10-11 Scope: Shared Oregon or applicable federal procedure; confirm local requirements Identify the specific tax notice and use the matching objection, conference or Tax Court appeal route. Who this route is for Taxpayers disputing an Oregon DOR personal-income or corporation-tax action covered by the notice. Timing and notices Periods vary by notice and remedy. The agency’s live appeal table and your letter control; interest continues on unpaid taxes during an appeal. Prepare (conditional documents may have alternatives) [ ] Complete DOR notice and date [ ] Tax year and taxpayer identifier [ ] Explanation and new supporting information [ ] Representative details if applicable [ ] Revenue Online or postal submission proof How to proceed 1. Identify the exact notice type and review the appeal table and appeal instructions in the letter. 2. Prepare the required contact, tax-year, identification and explanation information. 3. For an available DOR objection or conference, submit through Revenue Online or the published address. 4. If the notice requires a Tax Court appeal, use that court’s forms and fee instructions instead. 5. Keep proof and update contact details during the process. Read the DOR notice-specific appeal table: https://www.oregon.gov/dor/Pages/Appeals.aspx Limits: A payment plan or penalty-waiver request is not necessarily an appeal. Some penalty-waiver determinations are generally not appealable to the Magistrate Division. Publisher sources Oregon Department of Revenue : Appeals : State of Oregon https://www.oregon.gov/dor/Pages/Appeals.aspx Evidence type: publisher-html-snapshot SHA-256: 62b11d0f25c6568472a80c1d8f314f50aa2c72b6a348e7dc805084ec9870287a Oregon Department of Revenue : Taxpayer Bill of Rights : State of Oregon https://www.oregon.gov/dor/Pages/taxpayer-bill-of-rights.aspx Evidence type: publisher-html-snapshot SHA-256: aa144b263e51f32975f8bc691da4e77d76196af4c6a3bedef384ff37788682c0 This site helps you prepare. It does not submit filings, calculate personal deadlines, decide eligibility or replace professional review. A complaint or help request does not pause another case or deadline. Start here Identify the exact notice type and review the appeal table and appeal instructions in the letter. Where and how to submit Read the linked publisher instructions to confirm the receiving office, accepted submission method and current forms. This page has not separately verified those details. A county filter does not decide the correct court or filing location. https://www.oregon.gov/dor/Pages/Appeals.aspx What will it cost? Fees and fee-waiver eligibility have not been separately verified for this route. Check the current provider instructions. For a court filing, ask the court about its fee-waiver or deferral forms. After submission Keep a copy of what you send and its confirmation or receipt. Ask the receiving office how to track it, when to expect a response and how it will request missing information. These follow-up details have not been separately verified for this route. Corrections, denials and appeals Read any returned filing, correction request or denial notice promptly. Ask the responsible office for the correction, review or appeal instructions and the deadline that applies to your notice. This guide does not verify a route-specific appeal process. Language, disability and offline help Ask the receiving office about language assistance, disability accommodations and an alternative to online submission. Available options have not been separately verified for this route.