Assessment and Taxation Office

Office Notice about COVID-19
In an effort to prevent, slow, and stop the spread of COVID-19 to our citizens, our office will be limiting business to phone, email and online service. If you are not sure how to access services online, or you have a need that requires in-person assistance, please call our office at 541-506-2510 or email to to discuss.  Please keep in mind that response time may vary depending on staffing. Thank you for your patience during this time.

Our property detail and tax information is available online.  To access Ascend web, please click here.



We are responsible for identifying taxable properties and assigning values in order to calculate and collect property taxes that fund local taxing districts. We are also responsible for reading deeds and maintaining property ownership; business personal property; manufactured structures; plats, lot line adjustments, cancel & combines, segregations of property; exemption programs and special assessment programs.

Tax Collection collects current and delinquent taxes; turns over collections to the Treasurer for distribution to all taxing districts; processes foreclosures; manages bankruptcies; does personal property warrants and garnishments; submits yearly audit reports of all tax collections; handles tax appeals; does correction/journal vouchers; processes Fire/Act of God Applications; processes refunds; collects advance collections; and other related work as required.

Answering questions about property taxes
How does the Oregon Tax System work? Measure 5, Measure 50, what does it mean? Courtesy of Deschutes County Oregon, the Property Tax Fairy will help explain.  Access the Property Tax Fairy YouTube video for information about Measures 5 & 50 and how it affects your property tax by clicking here (Closed Captioning provided). 

What is the difference between Maximum Assessed Value and Real Market Value? 
The following video will help explain.  Access Understanding the Difference Between Maximum Assessed Value and Real Market Value video by clicking here (Closed Captioning provided).

Where do your property taxes go?  What's In It For Me?  
The following video will help explain.  Access What's In It For Me by clicking here (Closed Captioning provided).

Change of Address
You will need to download the form, print it out, complete the change and sign it. Return it to our office via email at, mail it to 511 Washington St, Rm 208, The Dalles, OR 97058 or bring it to our office.  Access the Change of Address form here.

Debit/Credit Card Transaction Fees
Tax Payments:
2.50% of tax paid, minimum $2.00 charge
$2.00 Flat Fee 

Oregon Department of Revenue: 
Access the Oregon Department of Revenue Property Tax page here.
Access The Oregon Map here.