STARTING JUNE 15TH– The Treasurer’s office will have limited in-person services by appointment only. Please call our office 509-243-2010 if you have any questions.

Real Estate Excise Tax Affidavit must accompany any legal document transferring ownership of real property. The Affidavit will not be accepted by the Treasurer’s office unless all areas 1-7 are complete.

Real Estate Excise Tax rates are based on a percentage of the sale price as shown below:


Washington State Excise based on Graduated REET rates, click on link


Asotin County .25%

City of Asotin .75%

City of Clarkston .25%

In addition to excise tax there is a $5.00 Electronic Technology Fee.

If there is NO excise tax owing there is a total fee of $10.00. ($5.00 Electronic Tech Fee and $5.00 Processing Fee)


Asotin County does not accept on-line Excise Tax Affidavits, however you can print the form and bring in all completed copies with original signatures.

Real Estate Excise Tax Rules and Regulations Chapter 458-61A WAC

For online forms click on the link below.

Blank Legal forms * Disclaimer: The Treasurer’s office cannot advise you on which document to use or how to fill it out, please consult an attorney if you have questions on these forms.