The Value On Your Tax Bill
ORS 308.146 and ORS 309.100 — a maximum of 103 percent of last year's assessed value, and a petition by December 31
Taxed on the lesser of two values. Oregon taxes most property on its assessed value, which is the lesser of its maximum assessed value and its real market value. The maximum assessed value is 103 percent of the prior year's assessed value, or 100 percent of the prior year's maximum assessed value, whichever is greater.
That limit does not hold when there is new property or a new improvement, a partition or subdivision, a rezoning, omitted property being added, or a loss of an exemption or special assessment; those are valued under other rules.
A petition by December 31. An owner, or someone obligated to pay the taxes, may petition the county property value appeals board for a reduction, from the time the tax statements are mailed until December 31. The petition is in writing, states the facts and grounds, is signed and verified, and says whether the petitioner wants a hearing.
A petitioner who asks for a hearing gets at least five days' written notice of it. The owner may appear alone or be represented by a relative, a lawyer or accountant, a real estate broker, an appraiser, a lessee, or an attorney-in-fact under a general power of attorney. The board adjourns no later than April 15.
Appeals beyond the board, to the Oregon Tax Court, and exemptions and deferrals, are in other chapters not on this page. Whether a particular value is wrong is a question for the board, the assessor or a licensed Oregon attorney.
Sources for this section (3)
- ORS 308.146 — Determination of maximum assessed value and assessed value
- ORS 309.100 — Petitions for reduction of property value
- ORS 309.026 — Sessions
Legal information, not legal advice. Verified as of October 2026. Applying it to a particular situation is the work of a licensed Oregon attorney.