Moving to Oregon

Oregon taxes residents on everything and nonresidents on Oregon-source income, and the test for which one you are has two parts. You are a resident if Oregon is your domicile: the place you think of as your permanent home, the center of your financial, social and family life, and the place you intend to return to when you are away. You are also a resident, whatever you call home, if you keep a residence in Oregon and spend more than 200 days of the year here. The year you move you file Form OR-40-P, the part-year return, which computes tax on your whole year’s income and then multiplies it by an Oregon percentage. Oregon has no reciprocal agreement with any state, so a Washington resident who works in Portland pays Oregon tax on the days worked in Oregon, and an Oregon resident who works in Vancouver pays Oregon tax on all of it with no credit, because Washington has no income tax to credit. The rule that governs remote work is physical presence: Oregon taxes a nonresident only on days actually worked inside Oregon, and the home-office days of a Washington resident belong to Washington.

Oregon’s rates make the residency question expensive to get wrong. A household that the Department reclassifies from nonresident to resident owes 8.75% or 9.9% on income it thought was untaxed, plus interest. The Department reads the test strictly and puts the burden of proof on the taxpayer, and the people it looks at hardest are those who left Oregon on paper for a state with no income tax while keeping an Oregon home.

The residency tests

A fraction of a day in Oregon counts as a day for the 200-day test. Days spent here for a medical emergency or while passing through can be excluded, but you have to prove them.

Domicile. You have one domicile at a time, and it stays where it is until you abandon it and establish a new one. The Department weighs the ordinary evidence: where your home is and whether you kept or sold the old one, where your spouse and children live, where you vote, where your driver’s license and car registrations are, where your doctor, dentist, lawyer and accountant are, where you belong to a church or club, where your business is run from, and how many days you spend in each place. No single item decides it. A retiree who buys a condominium in another state, spends six months there, but keeps the Oregon house, the Oregon doctor and the Oregon voter registration has not moved. The special-case rule is the one escape: an Oregon domiciliary who keeps a permanent home elsewhere all year, has no home in Oregon, and spends fewer than 31 days here is taxed as a nonresident.

The 200-day rule. The second test catches the person domiciled elsewhere who lives here most of the year. If you maintain a residence in Oregon, owned or rented, and are present in Oregon more than 200 days in the tax year, you are a full-year resident for that year regardless of where your domicile is. It is a statutory count, not a judgment call, and it is why someone with homes in two states should keep a calendar.

The part-year return: Form OR-40-P

The part-year return has two columns. The federal column, F, carries your full-year federal figures. The Oregon column, S, carries the Oregon share: all income received while you were a resident, plus Oregon-source income received while you were not. Line 35 divides the Oregon column by the federal column to produce the Oregon percentage, capped at 100%. The return then computes Oregon taxable income and tax on the federal-column figures, as if you had lived here all year, with the full standard deduction or itemized deductions and the federal tax subtraction, and multiplies the tax by the Oregon percentage on line 45. The credits that follow are prorated by the same percentage.

The design matters because it means the rate you pay is set by your whole year’s income, not by the Oregon part. Someone who earned $200,000 elsewhere from January to September and $40,000 in Oregon from October to December pays tax on $40,000 at the rates that apply to $240,000, not the rates that apply to $40,000. Nonresidents on Form OR-40-N get the same treatment.

Allocating the income is the real work. Wages go by where they were earned, usually by workdays. Interest, dividends and capital gains on securities go by where you lived on the day received or realized. Rent and business income go by where the property or business is. Pension and IRA payments go to the state you lived in when each payment arrived, so a January-to-June Oregon resident reports half a year’s 1099-R to Oregon. Social Security is subtracted whichever column it lands in.

No reciprocity: the Washington line

Oregon has reciprocal agreements with no state, and the border that matters is the Columbia River. Tens of thousands of people live in Clark County, Washington, and work in Portland, and the reverse commute is smaller but real. The rules:

• A Washington resident who works in Oregon owes Oregon tax on the wages for days worked in Oregon, on Form OR-40-N. Washington has no income tax, so there is nothing to credit and nothing to file at home.
• The same person working from home in Vancouver owes Oregon nothing for those days. Oregon has no convenience-of-the-employer rule: a nonresident is taxed only on days physically worked in Oregon. A Washington resident who works three days a week in the Portland office and two at home allocates 60% of wages to Oregon.
• An Oregon resident who works in Washington owes Oregon tax on all of the wages, because residents are taxed on everything. There is no Washington tax to credit, so the Oregon tax is the whole bill. The Oregon employer-side payroll taxes and the Statewide Transit Tax do not apply to a Washington employer, but the income tax does.
• An Oregon employer must withhold Oregon tax from a Washington resident’s wages for Oregon workdays. Give the employer an accurate Form OR-W-4, and keep a log of where you worked each day; the Department accepts a contemporaneous calendar and is skeptical of one reconstructed at audit.

The credit for tax paid to another state

When the same income is taxed by Oregon and another state, one of them gives a credit so you are not taxed twice. For an Oregon resident with income from most states, Oregon gives the credit, on Schedule OR-ASC code 802: the lesser of the other state’s tax on the income or Oregon’s tax on it, one code line per state. Because Oregon’s rates are high, the credit usually absorbs the whole of the other state’s tax and leaves an Oregon balance equal to the rate difference. For a handful of neighboring states the arrangement runs the other way: an Oregon resident with California wages, for example, claims the credit on the California nonresident return, not the Oregon one, and the Department’s guide gives exactly that example. Arizona, Indiana and Virginia are generally cited as the other reverse-credit states (verify). Nonresidents of Oregon take their credit in their home state.

The credit applies to income taxes only. It does not reach another state’s local income taxes, its capital gains tax, or the Portland-area Metro and Multnomah County taxes, which have their own nonresident rules.

Remote work across the line

Three cases cover almost everyone. An Oregon resident working remotely for an out-of-state employer owes Oregon tax on everything, and may owe the employer’s state as well if that state has a convenience rule, in which case Oregon gives the credit. A nonresident working remotely from another state for an Oregon employer owes Oregon tax only on days physically worked in Oregon; if the employer withholds Oregon tax on all wages, the fix is a corrected OR-W-4 going forward and Form OR-40-N to recover the excess for the year. A nonresident who comes to Oregon for occasional meetings owes Oregon tax on those days; the Department has no de minimis threshold for wages (verify), though in practice withholding on a few days a year is rarely pursued.

The year you move: a checklist

Pensions and IRAs. Federal law bars a state from taxing retirement income of a former resident, so Oregon tax on a pension starts the day you become a resident and stops the day you cease to be one. In the move year, allocate each 1099-R payment by the month it was received. If a one-time distribution or a Roth conversion is coming, take it while resident in the state that taxes it less. Oregon taxes a Roth conversion in full at up to 9.9%; see Oregon for retirees.

The home sale. The federal exclusion of $250,000 single or $500,000 joint of gain on a principal residence applies in Oregon, and the Department says so directly: gains within those limits are not taxed if the federal requirements are met. Gain above the exclusion is Oregon income at ordinary rates if you were an Oregon resident when the sale closed, or if the home is in Oregon. See The home sale exclusion.

Withholding. File a new Form OR-W-4 with your employer the week you move. Oregon has not used the federal W-4 for state withholding since 2020, and an employer with no OR-W-4 on file withholds as if you were single with no allowances, or not at all if the employer is outside Oregon. A new Oregon resident whose employer is in Washington has no Oregon withholding and should start estimated payments; the threshold is $1,000 of expected tax after credits. See The W-4 and withholding and Estimated payments.

The kicker. The surplus credit is paid on odd-year returns to people who had Oregon tax liability in the prior even year and file a return for the odd year. If you leave Oregon during a kicker year, file the part-year return for that year and you receive the kicker on it. There is no kicker on the 2026 return, so for someone moving this year the question is moot until the 2027 return, and the August 2026 state forecast projects none then either.

Portland. If you move into the Metro district or Multnomah County, the Supportive Housing Services and Preschool for All taxes apply to your taxable income above $128,000 / $205,000 and $125,000 / $200,000 respectively, prorated for a part-year resident on Forms MET-40-NP and MC-40-NP, and the Arts Tax applies to any Portland resident of more than 30 days with Oregon taxable income over $20,000 ($40,000 joint). Your employer withholds for the first two only if you ask or earn over $200,000. See How Oregon income tax works.

The paper trail. Change the driver’s license, voter registration, car registrations and mailing addresses in the first weeks, and keep the closing statement or lease that fixes the date. The move date is the fact every allocation on the OR-40-P depends on.