Taxes in Lake Oswego
Oregon's real, current graduated income tax (topping out at 9.9%) hits Lake Oswego's high-income households especially hard, layered with Clackamas County's own disclosed 0.85%-0.96% effective property tax rate and the highest median property-tax dollar bill in this Oregon Tier A wave.
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Learn moreA genuinely significant income tax for high earners
Oregon's graduated income tax runs 4.75% to 9.9% for 2026, with the top rate applying to taxable income above $125,000 (single) / $250,000 (married filing jointly) -- given Lake Oswego's real $141,549 median household income, this is a genuinely significant cost for many local households, not an abstract statewide figure.
Clackamas County's property tax rate, and the highest dollar bill in this wave
Clackamas County's effective property tax rate carried a real, disclosed spread across sources (0.85%-0.96%), with a $5,187 median annual bill -- the HIGHEST dollar figure among this Oregon Tier A wave, driven by Lake Oswego's genuinely high underlying home values as much as the rate itself.
Measure 50 matters even more for Lake Oswego's fast-appreciating homes
Oregon's real Measure 50 mechanic caps annual growth in a property's TAXABLE assessed value at 3% regardless of actual market appreciation -- a genuinely significant protection for Lake Oswego owners given the city's high and potentially fast-appreciating property values.
Key takeaways
- Oregon's graduated income tax (4.75%-9.9% for 2026) is a genuinely significant cost given Lake Oswego's high median household income.
- Clackamas County's property tax rate runs a real, disclosed 0.85%-0.96%, with the highest median dollar bill in this Oregon wave.
- Oregon's Measure 50 caps taxable assessed-value growth at 3%/year, a real protection for high-value, fast-appreciating homes.
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