Colorado 路 2026 tax year State-specific estimate
Colorado levies a flat 4.4% income tax on all taxable income, applied to federal AGI with minor modifications.
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Colorado estimate
Your estimate changes with filing status, Colorado rules, and the deductions you enter.
Quick answer Single filer estimate
Using the tax rules represented by this calculator, a single filer earning $75,000 in Colorado takes home about $59,001 per year, or $4,917 per month, before voluntary benefit deductions. Adjust the calculator for filing status and pre-tax benefits.
Colorado levies a flat 4.4% income tax on all taxable income, applied to federal AGI with minor modifications.
Colorado applies a single flat income tax rate of 4.4% to taxable income. Unlike progressive states, the same rate applies whether you are an entry-level worker or a high earner, which makes the calculation straightforward.
For 2026, the Colorado standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly. Pre-tax 401(k) contributions, HSA contributions, and employer health premiums reduce your Colorado taxable income.
Colorado is one of several states using a flat income tax rate. Compare your take-home pay across flat-tax states: Illinois (4.95%), Pennsylvania (3.07%), Georgia (4.99%), North Carolina (3.99%), Arizona (2.5%), Michigan (4.25%), Indiana (3.05%), Iowa (3.8%), Kentucky (3.5%), Utah (4.55%), Mississippi (4.7%), Idaho (5.8%).
This annual tax-liability estimate uses confirmed 2026 federal rules and Colorado state parameters from an earlier/current agency schedule that has not been independently confirmed as 2026. It is not an employer withholding calculation. See the full calculation methodology and limitations.
Data reviewed 2026-07-29. State rules without a confirmed rule year should be treated as provisional and checked with the linked agency.
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