Colorado charges 4.4% flat state income tax. Use the bonus tax calculator pre-loaded with Colorado rates.
Open Bonus Tax Calculator →When you receive a bonus in Colorado, your employer typically withholds at the federal supplemental rate of 22%, plus Colorado's flat 4.4%, and FICA at 7.65%. The combined withholding can make bonuses feel heavily taxed, though your actual liability may differ from withholding at year-end. This calculator shows both the withholding and the true tax on your bonus in Colorado.
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 bonus 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.