Oregon's top marginal state income tax rate is 9.9%. State tax is progressive here, so most filers pay an effective rate well below the top figure — the calculator applies a blended approximation rather than modeling the full bracket schedule.
No sales tax; assessed value growth capped at 3% annually. Statewide median household income is $80,000, which is the default loaded above.
Remember that a state with no income tax is not automatically cheaper overall. Oregon has an effective property tax rate of 0.82% and average homeowners insurance of $1,000 a year — states without wage income tax typically recover revenue through property or sales taxes.