With your IRS Determination Letter in hand, make sure you familiarize yourself with
requirements for recognizing your nonprofit’s tax-exempt status. This is an area
vary state-by-state. Many states issue their own tax-exempt certificate that can be
used for sales
and use tax purposes, but it may require application and periodic renewal.
To file to obtain exemption from state income tax:
If you are an exempt organization under Internal Revenue Code (IRC) Sections 501(c) through (f), 501(j), 501(n), 521, or 529, you are exempt from Oregon Corporation taxes (ORS 317.080). You don't have to apply to the Oregon Department of Revenue. Two exceptions to this are nonprofit homes for the elderly and people's utility districts.
More information: Oregon Department of Revenue
To file to obtain exemption from state sales tax:
Oregon does not currently have a state level sales tax.
For exemption from Oregon property taxes, check with your local assessor to see
if you qualify for exemptions, and if filing is required.