What taxes beyond property tax apply to a business operating in Portland?
Edvin Givargis Published 5 minute read
The short answer
More than the absence of a sales tax suggests. Oregon imposes no general sales or use tax, and no state or local tax resets property assessments on a purchase, but a business operating in Portland sits under as many as six income-measured taxes at once: the Oregon corporate excise tax, the Oregon Corporate Activity Tax on gross receipts, the City of Portland Business License Tax, the Multnomah County Business Income Tax, the Metro Supportive Housing Services business income tax, and, for very large retailers, the Portland Clean Energy Surcharge. Payroll adds the TriMet transit district employer tax and the statewide transit withholding, and pass-through owners and resident employees face regional personal income taxes on top. Each layer has its own base, threshold, and return, and underwriting that models only the state income tax will miss most of the stack.
The state layer
Oregon taxes corporate income through an excise tax on corporations doing business in the state, at 6.6 percent on the first million dollars of Oregon taxable income and 7.6 percent above it, with pass-through income reaching individual owners through the personal income tax instead. Since 2020 the state has also imposed the Corporate Activity Tax, a gross-receipts-based tax that applies regardless of profitability (ORS chapter 317A). The CAT equals $250 plus 0.57 percent of taxable Oregon commercial activity above $1 million, after a subtraction of 35 percent of the greater of cost inputs or labor costs apportioned to Oregon. A business must register once Oregon commercial activity passes $750,000 and file once it passes $1 million, and the tax applies to receipts from real property located in Oregon as readily as to sales of goods. The CAT is the answer to the recurring diligence question about whether Oregon has a revenue tax: it did not for decades, and now it does.
The city, county, and Metro layers
Portland-area local taxation is administered largely through one office, the Portland Revenue Division, but the taxes are distinct and cumulative. The City of Portland Business License Tax is, despite the name, a net income tax: 2.6 percent of net income apportioned to city activity, with an exemption for businesses whose gross receipts everywhere fall under a threshold that is stepping up from $75,000 to $100,000 for tax years beginning on or after January 1, 2027. The Multnomah County Business Income Tax is a second net income tax on the same combined return: 2 percent of apportioned net income, with an exemption under $100,000 of gross receipts. The Metro Supportive Housing Services business income tax adds 1 percent of apportioned net income for businesses with more than $5 million in gross receipts everywhere, covering the urbanized portions of three counties. And the Clean Energy Surcharge applies to large retailers, those with at least $1 billion in total gross income and $500,000 or more in Portland gross income, on Portland retail revenue. A profitable Portland operation above the thresholds therefore pays combined city, county, and Metro rates in the range of 5.6 percent of apportioned net income before the state layer, and the local taxes are computed on their own apportionment and their own rules, not as a percentage of the Oregon return.
Payroll and the owner-level overlay
Employers with payroll in the TriMet transit district, which covers most of the Portland metropolitan area, pay a transit payroll tax on gross wages for services performed in the district; the rate has stepped up annually by design, reaching 0.8137 percent for 2025, and the current rate is published with each quarter's combined payroll report. Separately, employers statewide withhold the 0.1 percent Oregon statewide transit tax from employee wages. The region also reaches individual income: the Metro Supportive Housing Services personal income tax and the Multnomah County Preschool for All personal income tax apply to higher-income residents and to nonresidents' income sourced to the district and county, and employers above modest size are drawn into withholding for both. For a pass-through structure, the owner-level overlay belongs in the model alongside the entity taxes, because the same dollar of Portland income can bear the state personal income tax, the local business taxes at the entity, and the regional personal taxes at the owner.
What Oregon does not impose
Three absences complete the picture. Oregon has no general sales or use tax at any level, which moves it near the top of any construction-cost comparison across states. A sale of real property is not an assessment event, so the property tax base carries over to a buyer under the Measure 50 cap rather than resetting to the price. And real estate transfer taxes are prohibited: state law bars cities, counties, and districts from taxing the transfer of a fee estate in real property (ORS 306.815), with a grandfather clause preserving only taxes in effect on March 31, 1997, of which Washington County's small transfer tax is the surviving example. A Portland closing therefore carries recording fees but no meaningful transfer tax, a point worth confirming county by county only because of the grandfather clause.
Practice notes
The stack rewards a checklist approach at underwriting. The entity-level model should carry six lines, state excise, CAT, city, county, Metro, and, where the profile fits, the surcharge, each with its own threshold test, because the thresholds are measured on different bases: some on gross receipts everywhere, some on Oregon commercial activity, some on Portland gross income. Registration obligations arrive before tax obligations, most visibly with the CAT's $750,000 registration trigger, and the local combined return must be requested and filed even in loss years once the exemption thresholds are passed. For acquisitions, successor exposure runs through the local taxes as well as the state ones, and a target that never registered with the Revenue Division is a finding, not a footnote. The rates and thresholds above move frequently, the city exemption is mid-transition as this is written, and the transit rate changes annually, so the numbers deserve confirmation at each modeling date even though the architecture is stable.
This article states the law as of September 12, 2026
Statutes, rates, thresholds, and agency practice change, and a different set of facts can change the answer. Before acting on anything discussed above, contact G&G State Tax Group to confirm what has changed since this was written and how the rules apply to a specific situation.
G&G State Tax Group, LLC is a state and local tax advisory firm. The firm provides state and local tax consulting and representation in state and local tax controversies. G&G does not prepare or file tax returns, perform attest services, or provide bookkeeping, and is not a CPA firm.