What actually happens
An employee who lives in Washington and performs work in Oregon sits in two tax systems at once. The residence state claims the right to tax all of a resident's income wherever earned; the work state claims the right to tax income sourced within its borders. Absent an agreement, both claims stand, and the conflict is resolved after the fact through a credit on the resident return rather than up front in payroll.
When Oregon withholding starts
Oregon applies a de minimis test $2,910 of in-state wages before nonresident withholding begins. Oregon withholding for a nonresident is generally required once Oregon wages equal or exceed the employee's Oregon standard deduction, which varies by filing status and is indexed annually. Tax Foundation reports $2,910 for 2026 (single filer basis). Verify the current figure and filing-status variation in the Oregon Withholding Tax Formulas before relying on it.
The trap is that thresholds are usually retroactive to the first day once crossed. An employee who spends 40 days in a 30-day-threshold state does not owe tax on 10 days; they owe it on all 40, and the employer is the one who failed to withhold.
Unemployment insurance goes to one state only
Income tax can be split between states. Unemployment insurance cannot. Under the localization test used by every state, an employee whose services are performed entirely in Oregon is covered by Oregon for unemployment purposes, and all wages are reported there — regardless of where they live, where you are headquartered, or which state's income tax you withhold. Oregon's 2026 taxable wage base is $56,700. The four-factor test in order.
Local taxes are a separate problem
Oregon: Oregon has multiple employee-withheld local taxes: the Multnomah County Preschool for All personal income tax, the Metro Supportive Housing Services personal income tax, the Eugene Community Safety Payroll Tax, and the statewide transit tax (0.1% of wages). TriMet and Lane Transit District payroll taxes are employer-paid. Oregon also has the state Paid Leave Oregon employee contribution.
What you have to register for
| Obligation | State | Agency |
|---|---|---|
| Income tax withholding | Oregon | Oregon Department of Revenue |
| Unemployment insurance | Oregon | Oregon Employment Department |
| Paid family & medical leave | Oregon | Paid Leave Oregon's 2026 contribution rate is 1.00% of subject wages up to $184,500. Employees pay 60% (0.60%) and employers with 25 or more employees pay 40% (0.40%); employers with fewer than 25 employees owe no employer share but must still withhold the employee 60%. |
Frequently asked
Do Oregon and Washington have a reciprocal tax agreement?
No. There is no reciprocal agreement between Oregon and Washington. Oregon taxes wages earned in the state by nonresidents, and Washington does not tax wages at all.
Which state's income tax should be withheld?
Oregon, as the state where the work is performed. Washington imposes no wage income tax, so Oregon is the only withholding obligation.
Which state gets the unemployment insurance wages?
Oregon. Unemployment coverage is never split between states for a single job. The localization test assigns the whole job to the state where services are performed, which here is Oregon, regardless of residence or where the employer is headquartered.
How many days can an employee work in Oregon before withholding starts?
Oregon applies a de minimis test of $2,910 in wages. Once the limit is crossed, most states require withholding on all in-state wages for the year, not just the excess.