Filing Information Who Must File? Due Dates & Extensions Wage Withholding, W-2 & 1099 Statements New Colorado Residents Part-Year & Non-Residents Income Tax Accounts DR 0004 Employee Resources Colorado is one of 14 states with a flat income tax. Its approach is different from how the federal government and most other states collect taxes.
Colorado State Income Tax: Rates and Who Pays in 2026 - NerdWallet Colorado (CO) state income tax for 2025–2026 — flat 4.4% flat, single/MFJ/HOH thresholds, plus neighbor-state comparison. Explore Colorado's state tax rates for income, sales, property, retirement, and more. Learn how Colorado compares nationwide. Find out how much you'll pay in Colorado state income taxes given your annual income.
colorado state income tax, Customize using your filing status, deductions, exemptions and more. Learn about the Colorado state income tax structure, current rates, the refund process, and what it means for taxpayers across the state. Colorado voters approved a ballot measure that raises income taxes on high-earning households to help fund free meals for K-12 public school students, according to the Associated Press. The state ... Online Filing Tools Where's my refund?
colorado state income tax, Check online Check the status of your state income tax return Information on Refunds Check Refund Status This Part 1 describes rules that determine whether an individual is a full-year resident, a part-year resident, or a nonresident for Colorado income tax purposes. Colorado uses a flat-rate income tax structure for 2025: a single rate of 4.40% applies to all taxable income above the standard deduction, regardless of filing status or income level. Oregon takes the biggest bite out of a $100,000 salary, with state taxes reducing after-tax income to about $70,500 — the lowest in the U.S.
