Colorado charges 4.4% flat state income tax. Use the rsu tax calculator pre-loaded with Colorado rates.
Open RSU Tax Calculator →RSU vesting in Colorado triggers a flat 4.4% state income tax, treated as ordinary income just like your salary. Your employer typically sells shares at vesting to cover the combined federal, state, and FICA withholding, which can consume 35-50% of the vested shares depending on your income level. This calculator shows you exactly how many shares (or dollars) you keep after all Colorado tax layers are applied.
Colorado levies a flat 4.4% state income tax on all taxable income regardless of how much you earn. This makes tax planning straightforward: for every additional dollar you earn, 4.4 cents goes to Colorado. Colorado does not impose local income taxes, so the 4.4% flat rate is the only state-level income tax you owe.
The table below shows what you actually keep at five salary levels in Colorado, accounting for federal tax, FICA, and Colorado's flat 4.4% state tax.
See how Colorado compares to other West states. Each link takes you to the rsu tax calculator landing page for that state.
For a comprehensive breakdown of Colorado’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Colorado take-home pay page.