The Portland Tax Stack: Metro SHS, Multnomah Preschool for All, the Arts Tax — and What High Earners Should Know
If you live or work in the Portland area, your income can be subject to as many as three local taxes that sit on top of your federal and Oregon returns. Each one has its own boundary lines, its own income thresholds, and its own filing quirks. None of them shows up automatically on most paychecks.
That last part is why our tax team hears the same question every spring: "I have taxes withheld from every paycheck — why do I owe more?" This post maps the stack: which taxes apply where, why W-2 earners get surprised, and where the combined math starts to matter for bigger decisions.
The map: three taxes, three boundaries
Metro Supportive Housing Services (SHS) tax. This applies inside the Metro district — the urbanized parts of Multnomah, Washington, and Clackamas counties. As of September 2026, it is a 1% tax on Oregon taxable income above $128,000 for single filers and $205,000 for joint filers for tax year 2026. Those thresholds are new: for tax years 2021 through 2025 they were fixed at $125,000 and $200,000, and beginning in 2026 they adjust annually for inflation. The tax applies to residents of the district, and to non-residents on income earned inside the district. If you are not sure whether your address falls inside the boundary, Metro publishes an address lookup — the line does not follow city limits or county lines.
Multnomah County Preschool for All (PFA) tax. This one follows the county line. As of September 2026, it is 1.5% on taxable income above $125,000 (single) or $200,000 (joint), plus an additional 1.5% — a combined 3% — on income above $250,000 (single) or $400,000 (joint). It applies to county residents and to non-residents on Multnomah County-source income. Two things worth noting as of this writing: unlike the Metro tax, the PFA thresholds are not inflation-adjusted, and a scheduled rate increase of 0.8 percentage points per tier — which would bring the rates to 2.3% and 3.8% — has been delayed and is currently set to take effect January 1, 2027.
Portland Arts Tax. The City of Portland's Arts Education and Access Fund tax is a flat $35 per year, as of September 2026, owed by each Portland resident who is 18 or older and has at least $1,000 of income, unless the household's income is at or below the federal poverty guideline. It is filed separately — it never appears on a paycheck or an Oregon return, which is why it is the most commonly forgotten item in the stack. Changes adopted by the City Council in May 2026 will raise the tax to $50 and exempt filers with taxable income of $20,000 or less ($40,000 joint) beginning in 2027.
Put the boundaries together and the picture becomes clear: a household in Portland proper sits inside all three — city, county, and Metro district — while a household in, say, unincorporated Washington County inside the Metro boundary may only face one. Your address, not your employer's, does most of the work here, though where your income is earned matters too.
Why W-2 earners get surprise bills
Federal and Oregon income taxes are withheld from nearly every paycheck by default. The Metro SHS and Multnomah PFA taxes work differently, and the mechanics create predictable gaps.
As of September 2026, employers in the relevant jurisdictions are generally required to withhold these taxes only for employees earning $200,000 or more per year from that employer — and even those employees can opt out. Everyone else must affirmatively opt in, typically using the Metro/MultCo OPT form, and specify what to withhold. If you never filed that form, nothing is being withheld, even if you clearly owe the tax.
The gaps show up in a few recurring patterns:
Two-earner households. Each spouse earns under $200,000, so neither employer withholds — but the joint income clears the thresholds comfortably.
Income your employer never sees. Equity compensation from a prior employer, self-employment income, rental income, and investment income all count toward the thresholds, but no employer is withholding local tax on them.
Flat-rate withholding. Even when withholding is happening, it is calculated on your wages from that one employer, without knowing your filing status or your household's other income. It can land high or low.
Estimated payments. If you expect to owe enough, quarterly estimated payments come into play. Beginning with tax year 2026, the estimated-payment threshold for both the Metro and Multnomah County taxes rises to $5,000 of expected annual liability. Underpaying along the way can mean interest charges on top of the balance due.
A common pattern: two spouses in Portland each earn a salary below $200,000, so neither employer withholds the Metro or county taxes. Filing jointly, their combined income is above both sets of thresholds. Nothing was withheld all year, so the full amount for both taxes arrives as a balance due in April — along with the separately filed Arts Tax. This is a hypothetical example and is not representative of any specific situation. Your results will vary.
Where the combined math starts to matter
For income above the thresholds, these taxes stack on top of federal and Oregon rates. That changes the marginal-rate math — the tax cost or savings of the next dollar of income — for anyone whose income moves around from year to year.
A few places this shows up:
Equity compensation. When restricted stock vests or options are exercised, the income recognized that year can cross one or more local thresholds, and standard withholding may not account for it.
Roth conversions and similar decisions. These are decisions where combined rates matter — the local stack changes what a marginal dollar of recognized income actually costs. Talk to your advisor before acting; the right answer depends entirely on your situation.
Business income. Pass-through income lands on your personal return, where the local stack applies above the thresholds. How your business is structured interacts with all of this — see our related posts on Oregon's pass-through entity elective tax [link: PTE-E post] and on choosing a business structure [link: entity choice post].
None of this is an argument for or against any particular decision — it is simply part of the arithmetic that Portland-area households need in front of them before deciding.
A short checklist
Confirm which boundaries your home address — and your work location — actually fall inside.
Look at a recent pay stub: is anything labeled Metro SHS or Multnomah PFA being withheld?
If you expect to owe and nothing is withheld, weigh opting in through your employer against making quarterly estimated payments. Withholding is simpler; estimates give you more control mid-year. Either beats a surprise.
Don't forget the Arts Tax — it is filed on its own, separate from everything else.
If your income is uneven — equity vesting, a business sale year, a large bonus — bring the local stack into the planning conversation early, not in April.
Rates, thresholds, and boundaries cited here are current as of September 2026 and do change; the 2027 changes already adopted for the Arts Tax and scheduled for the PFA tax are a good reminder of that.
Call our tax team: 503-233-1133
This material is for general information only and is not intended to provide specific tax or legal advice for any individual or business. Please discuss your specific situation with a qualified tax professional. Tax and accounting services offered through Cross Financial are separate from, and not affiliated with or endorsed by, LPL Financial. Information current as of September 2026; tax law changes frequently.
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