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Filing Tax Return for the First Time

Welcome to Washington County, we’re glad you are part of our community. Find information below to file your return for the first time.

If you are filing for the first time

Step 1: Create a list of all your taxable assets

  • Asset Description (including QUANTITY and NEW or USED)​
  • Purchase Date​
  • Total Purchase Cost​

Step 2: Download/ print the current year’s Property Tax Return form and fill it out COMPLETELY! If a section does not apply, leave it blank.​ Don’t forget to SIGN the form!​

Step 3: ​Sign and submit your return and asset detail list electronically through webfile: https://forms.co.washington.or.us/form/business-personal-property-retur

Or you can Print, sign and mail your return and asset detail list to Washington County Assessment & Taxation. Mailing address below.

  • Filing Deadline:​ March 15th​

​Tips for new filers

  • Check the Return form for a list of commonly reported, taxable business assets –
    To see an example asset list, click here. (PDF 346.57 KB)
  • Mail your documents to:
    Washington County Assessment & Taxation
    Business Personal Property
    155 N. 1st Ave, Ste 200, MS-8A,
    Hillsboro OR 97124​
  • If you have any questions, you can call us M-F, 8:30AM – 5:00PM at 503-846-8838