Residency rules, sticky taxes, and first-year steps (2026)
2026.1 Edition · Revised 2026-07-25 · DomusDay Research
The move changes the rate; the record decides whether it sticks. Oregon keeps taxing until domicile actually changes — the place a person considers home and plans to return to after an absence — intent is the deciding factor, read against conduct, and its 200-day statutory test stays live while any Oregon abode is maintained. Below: what follows leavers, and the Colorado steps that build the record.
Colorado's resident definition reaches beyond domicile: maintaining a permanent place of abode and spending, in aggregate, more than six months of the tax year in Colorado makes an individual a resident. The threshold is stated as six months — Colorado publishes no 183-day count.
Source ↗Colorado taxes income at a flat 4.40%. In surplus years the Taxpayer's Bill of Rights returns revenue — sometimes as a temporary rate cut, as with 2024's 4.25% rate, and sometimes as a sales tax refund claimed on the income tax return.
Source ↗Closings of $100,000 or more where the seller shows a non-Colorado address carry withholding of the lesser of 2% of the sales price or the net proceeds, reported on Form DR 1083 and credited against the seller's Colorado income tax.
Source ↗Colorado is the easy half. Oregon decides whether the move counts, and it decides on evidence — the two tests below stay live until the record closes them out.
The full rules, the audit program, and every source: the complete Leaving Oregon guide →
Top-bracket rates differ by 5.5%: Oregon at 9.9%, Colorado at 4.4% — an illustration at the top marginal rate, not an effective-rate calculation.
The first weeks in Colorado matter more than they look: each step below produces a dated document, and dated documents are what answer a Oregon examiner years later. Do them early and the record starts on your side of the timeline.
The DMV's new-resident guidance sets a 30-day window to transfer an out-of-state driver's license; DMV residency begins with owning or operating a Colorado business, Colorado employment, or 90 consecutive days of residence.
Source ↗The DMV's new-resident guidance sets a 90-day window to register vehicles in Colorado.
Source ↗Colorado voter registration runs online through the 8th day before an election and in person at a voter service and polling center through Election Day itself; residence means the principal or primary home.
Source ↗Colorado has no general property-tax homestead exemption. The senior exemption removes 50% of the first $200,000 of actual value for owner-occupants 65 or older who have owned and occupied the home as the primary residence for at least 10 consecutive years — applications go to the county assessor by July 15.
Source ↗The creditor homestead exemption (C.R.S. §38-41-201, raised by SB22-086 in 2022) exempts $250,000 of home value — $350,000 for elderly or disabled owners — from seizure to satisfy a debt, contract, or civil obligation, with no recording or declaration required.
Source ↗Colorado requires liability coverage of $25,000 per person for bodily injury, $50,000 per accident, and $15,000 for property damage to another as the minimum to drive.
Source ↗The residency of the spouse and dependents is among the domicile evidence the Department weighs — household relocation into Colorado is dated evidence on the arrival side.
Source ↗The six-month + abode resident definition runs on the arrival side too: aggregate time in Colorado with a permanent place of abode dates when Colorado residency began.
Source ↗Form DR 0104PN, filed with the DR 0104, covers the arrival year — tax is prorated so it falls only on income received while a Colorado resident or from Colorado sources.
Source ↗In TABOR surplus years the state refunds revenue to taxpayers — in recent years as a sales tax refund claimed on the income tax return or as a temporary income tax rate reduction, as in 2024.
Source ↗Everything Colorado asks of a new resident, on its own plate: the Moving to Colorado guide →
Every rule on this page traces to a statute, regulation, or agency publication, listed in full on each state's own plate.
2026.1 Edition · Revised 2026-07-25 · DomusDay Research