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Year-end & tax season checklist

Offices in Clackamas & The Dalles, Oregon

503-785-3200

Heather’s Tax Service & More

Payroll

Payroll for Oregon and Washington employers

Oregon payroll carries more separate obligations than most employers expect, and the Portland-area local withholding requirements catch nearly every new employer in their first year.

Two colleagues working through figures on a laptop in a shop

Onboarding a payroll

Four steps, and the local withholding is set up correctly from run one

  1. Registrations checked

    Federal, Oregon, unemployment insurance and Paid Leave — plus whichever local authorities your work locations trigger.

  2. Employees mapped to jurisdictions

    Withholding follows where the work is performed, not where the office is. This is the step software leaves to you.

  3. A parallel run

    We run alongside your existing setup once before switching, so a mistake shows up on a spreadsheet rather than in a paycheque.

  4. Filed on the calendar

    Quarterly combined reports, annual returns and the W-2s and 1099s at the January deadline.

What Oregon employers are actually responsible for

ObligationWho it applies toWhere it is filed
Federal withholding, Social Security, Medicare, FUTAAll employersIRS
Oregon income tax withholdingEmployers with Oregon-work employeesOregon DOR, combined payroll report
Oregon unemployment insuranceMost employersOregon Employment Department
Paid Leave OregonEmployers with Oregon employeesOregon combined payroll
Statewide transit taxWages for Oregon-work employeesOregon combined payroll
TriMet / Lane transit payroll taxEmployers operating in the districtOregon combined payroll
Metro SHS withholdingEmployees over the threshold in the Metro districtPortland Revenue Division
Multnomah PFA withholdingEmployees over the threshold in Multnomah CountyPortland Revenue Division
Workers’ compensationNearly all employersInsurer and Oregon WC Division

Cross-border payroll

Employers with staff on both sides of the Columbia have a harder job than the payroll software suggests. Washington has no income tax withholding but does have Paid Family and Medical Leave and workers’ compensation obligations of its own. An Oregon employer with a Washington-resident employee working from home in Vancouver may have no Oregon withholding obligation at all for those wages — which is the mirror image of the problem we solve on the cross-border hub.

Do you run payroll or just advise on it?

Both. We process payroll for small businesses and we also fix compliance for businesses running payroll elsewhere who have found something wrong.

We have one employee. Is that worth outsourcing?

Often yes — one employee still triggers nearly every Oregon obligation in the table above. The compliance burden barely scales with headcount.

What happens if we missed local withholding?

It is correctable. Metro SHS and Multnomah PFA employer withholding are the two most commonly missed, and catching it mid-year is far cheaper than at filing.

Can you handle contractors as well as employees?

Yes — see 1099 contractor filing. Classification is the first question and it matters more than the paperwork.

By city

Talk it through before filing season starts

Start with a complimentary 15-minute introductory call about your situation and whether we are a good fit. No tax advice is given on that call.

Katie Wells, bookkeeper

Written by

Katie Wells

Bookkeeper, 25+ years

Katie has kept books for small businesses for more than 25 years — QuickBooks, payroll, AP, AR, reconciliations and monthly reporting.

Reviewed by

Heather Perkins

Enrolled Agent, Oregon Licensed Tax Consultant

Last reviewed

This page is general information about Oregon, Washington and federal tax rules, not advice about your own return. Thresholds and rates change every year. Figures were verified as of August 2026 — check the linked official sources, or talk to us about your situation.

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