Moving From Oregon Tax Guide 2026: 9.9% Top Rate, No Sales Tax & Residency Rules

Oregon occupies a distinctive position in US tax planning: no sales tax but a very high income tax rate (9.9% top rate), with capital gains treated as ordinary income. For high earners, investors, and business owners, Oregon's effective tax burden rivals or exceeds California for certain income types — particularly capital gains and ordinary income at high brackets.

Portland's metro area has added additional income taxes in recent years: Multnomah County's Preschool for All tax (1.5–3% on income above $125,000 single) and the Metro Homeless Services Tax (1% on income above $125,000 single), creating a combined marginal rate for Portland residents approaching 13–14% — comparable to California.

Oregon Residency: Domicile Test and Departure

Oregon uses a domicile-based residency test with a 200-day presence rule that can create a presumption of domicile (but is rebuttable).

Oregon Domicile Test

Oregon is your domicile if it is your fixed, permanent home with intent to return. To change Oregon domicile: (1) Establish a genuine new home in the destination state and occupy it as your primary residence; (2) Get a new driver's licence and vehicle registration in the new state; (3) Register to vote in the new state; (4) Transfer professional and social connections to the new state. Oregon's 200-day rule: if you spend more than 200 days per year in Oregon, Oregon creates a presumption that Oregon is your domicile — you must rebut this presumption with clear evidence. This is not a statutory residency rule (there is no 'maintained dwelling' requirement alongside the day count), but it shifts the burden of proof.

Oregon Part-Year Return (Form OR-40-P)

In the departure year, file Oregon Form OR-40-P as a part-year resident. Oregon taxes: worldwide income from January 1 through your departure date, and Oregon-source income from your departure date through December 31. Oregon-source income after departure: wages earned for work physically performed in Oregon, Oregon rental income, Oregon business income, Oregon real estate gains.

Oregon vs Washington: The Interstate Strategy

Many Oregon workers live in Washington State (Camas, Vancouver, Washougal) and commute into Portland for work. This structure historically allowed them to avoid Oregon income tax on non-Oregon workdays. However, if you work in Portland, you owe Oregon income tax on wages earned in Oregon — regardless of where you live. The Oregon income tax on Portland workdays combined with Washington property taxes (and Washington's lack of income tax on non-OR income) creates a mixed burden. For remote workers who can work entirely outside Oregon, establishing Washington domicile eliminates all Oregon income tax on remote work.

Portland Metro Taxes, Capital Gains, and Oregon Estate Tax

Oregon's base 9.9% top rate is supplemented by Portland metro area taxes that have made Portland's combined marginal rate among the highest in the US for high earners.

Portland Metro Combined Marginal Rates (2024)

At 13.9% combined marginal rate, Portland exceeds California's 13.3% top rate for income above $250,000. This is one of the primary drivers of departure from Portland metro — many high earners are effectively paying California-equivalent tax rates while not benefiting from California's larger economy and opportunity ecosystem.

Oregon Capital Gains: Treated as Ordinary Income

Oregon does not provide a preferential capital gains rate — long-term and short-term capital gains are both taxed as ordinary income at the full marginal rate (up to 9.9% + Portland metro taxes if applicable). This is particularly significant for: venture-backed entrepreneurs with large exit events, investors with concentrated equity positions, real estate investors realizing significant appreciation gains, and long-term stock option holders. A Portland entrepreneur selling a company for $5M gain faces approximately $693,000 in Oregon state income tax (13.9% × $5M), compared to $0 in Nevada, Florida, or Texas, and approximately $350,000 in Washington State (7% on gains above $262,000).

Oregon Estate Tax: $1M Threshold — Lowest in the US

Oregon's estate tax threshold of $1 million (2024) is the lowest of any state in the US. This threshold has not been indexed to inflation for many years, meaning it captures an increasing number of Oregonians as property values and retirement accounts grow. Oregon estate tax rates range from 10% to 16%. For Portland-area homeowners (median home ~$500,000–$800,000) with any significant retirement savings, the $1M threshold is easily crossed. Changing domicile before death — or trust planning — is essential for estates approaching and above $1M for Oregon residents.

Oregon Retirement Income

Oregon taxes most retirement income at full rates. Social Security: taxable for income above approximately $22,500 (single); some federal SS deduction available. IRA, 401(k), pension: taxable at regular OR rates. Federal government/military pension: partially or fully deductible in some cases. Oregon's retirement income taxation at up to 9.9%, combined with no Social Security exemption for higher earners, makes departure particularly compelling for Oregon retirees.