2026 Property Tax Due Dates
November 15
Full (3% discount) or first third
May 15
Third installment
Payment Methods
Online, Mail, In-Person
Klamath County Treasurer
Phone
(541) 883-5111Office Hours
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Klamath County Treasurer
In Person
Visit the Treasurer's office — 305 Main St, Klamath Falls OR 97601, Mon-Fri 8am - 5pm
About Property Taxes in Oregon
Oregon's property tax system is one of the most complex in the country due to Measure 50 (1997), which created two separate values for every property: the Real Market Value (RMV) and the Maximum Assessed Value (MAV). The MAV can increase only 3% per year, while the RMV fluctuates with the market. Property is taxed on the lesser of these two values — for most properties, the MAV is lower and therefore controls the tax bill. This system means long-term property owners are often taxed on values far below current market prices. However, when a property is sold or significantly improved, the MAV resets closer to the new market value.
Payment & Assessment
Oregon property taxes are due November 15 and may be paid in three installments: First installment (33%): Due November 15 — receive a 3% discount if paying in full by this date Second installment (33%): Due February 15 Third installment (33%): Due May 15 If paying in full on November 15, a 3% discount applies. A 1.33% per month interest charge applies to unpaid installments after their due dates. Most counties offer online payment through the county tax collector's website. Contact your county for payment options.
Statewide framework for Oregon. Your county's specific rates and deadlines are shown above.
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.