Colorado's state tax story is mostly a deduction story. The rate is a flat 4.4 percent, so there are no brackets to climb, but the standard deduction is large: $16,100 single and $32,200 joint. On an ordinary salary, the deduction removes about a fifth of gross pay before the rate touches anything, which is why the state line looks smaller than the rate alone would suggest.
Enter your salary and filing status to see the Colorado line beside federal tax and FICA.
The deduction first, then the rate
Colorado taxable income is gross pay minus pre-tax deductions minus the state standard deduction. For a single filer, that deduction is $16,100, and for a joint household it is $32,200. The flat rate of 4.4 percent then applies to whatever remains. Source: Tax Foundation 2026 State Income Tax Rates and Brackets, as of 1 January 2026, with the flat rate applied to Colorado taxable income after the deduction shown.
Readers sometimes notice that $16,100 and $32,200 are also the 2026 federal standard deduction figures. That coincidence does not make them the same deduction. They are subtracted separately, once for federal tax and once for state tax, and a change to one does not automatically change the other.
Worked examples: $80,000, single and joint
Single filer, $80,000 salary, no pre-tax deductions: taxable income is $80,000 minus $16,100, which is $63,900. At 4.4 percent, the state tax is $2,811.60. Paid biweekly, that is about $108.14 per paycheck. The effective rate on gross pay is about 3.51 percent, and the gap from 4.4 percent is entirely the deduction.
Joint household, $80,000 combined salary, no pre-tax deductions: taxable income is $80,000 minus $32,200, which is $47,800. At 4.4 percent, the state tax is $2,103.20, which is $708.40 less than the single figure on the same salary. The rate never changed. The deduction doubled, and in a flat system that is the whole difference.
A raise is priced the same way in both cases. Every extra dollar of taxable income costs 4.4 cents of Colorado tax, whether the filer is single or joint, at $80,000 or at $180,000. The only way the marginal rate changes is if a deduction changes, not if income rises.
The mistake to avoid with a flat rate
The tempting mistake is to multiply the whole salary by 4.4 percent and stop there. On $80,000 single, that gives $3,520, which overstates the worked figure by $708.40, exactly the tax on the standard deduction. The same mistake in reverse is to assume a flat state rate means a flat total bill. Federal tax is progressive, Social Security has a wage base, and Medicare has an extra threshold, so the total stub still changes shape as pay rises even though the Colorado line does not.
This guide gives general information only, not a determination for an individual return. For the federal side of the same stub, see the federal brackets guide linked from the paycheck hub.
FAQs
Does Colorado have tax brackets?
No, not for 2026. There is one rate, 4.4 percent, on Colorado taxable income. The standard deduction is what varies by filing status.
Why is the joint tax lower on the same salary?
Because the joint standard deduction is $32,200 instead of $16,100, so $16,100 more income escapes the rate. At 4.4 percent, that is $708.40 less tax.
Is the Colorado standard deduction the same as the federal one?
The 2026 figures coincide, $16,100 single and $32,200 joint, but they are separate deductions subtracted separately. Do not count one deduction twice or assume they move together.