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Colorado Paycheck Calculator

Calculate your Colorado take-home pay after federal taxes, FICA, and the flat 4.4% CO income tax. Free 2026 paycheck calculator for Colorado residents.

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Colorado Paycheck Calculator: Calculate Your 2026 Take-Home Pay

Our Colorado Paycheck Calculator helps you estimate your net (take-home) pay after federal taxes, FICA (Social Security and Medicare), Colorado state income tax, and pre-tax deductions. Colorado applies a flat 4.4% income tax rate to your federal taxable income, making the math straightforward. This tool provides a detailed breakdown of your earnings and deductions for the 2026 tax year. For a broader perspective, also check out our Take Home Paycheck Calculator for nationwide calculations.

How Colorado State Income Tax Works

Colorado uses a single flat rate of 4.4% applied directly to your federal taxable income. This means Colorado relies on the federal standard deduction rather than providing a separate state deduction. There is no local income tax in Colorado. The Taxpayer Bill of Rights (TABOR) can temporarily lower the effective rate in years when state revenue exceeds caps, resulting in refunds or rate reductions.

Key features of Colorado state income tax:

  • Flat 4.4% rate on federal taxable income
  • Uses federal standard deduction (no separate state deduction)
  • TABOR refunds can lower effective rate in surplus years
  • No local or county income taxes

Federal Tax and FICA Deductions

This calculator applies the 2026 federal income tax brackets based on your filing status. The standard deduction for 2026 is $16,100 for single filers, $32,200 for married filing jointly, and $24,150 for head of household. FICA taxes include Social Security at 6.2%, Medicare at 1.45%, and Additional Medicare at 0.9% for high earners. Before deductions, calculate your total earnings with our Gross Pay Calculator.

How This Is Calculated

This calculator is based on 2026 IRS federal tax brackets and FICA, plus each state's latest published income-tax schedule. Colorado's tax is calculated as 4.4% of your federal taxable income. Pre-tax deductions (401(k), HSA, health premiums) reduce your taxable income before federal and state taxes are applied. You can also use our Income Tax Calculator to compare tax burdens across different states.

Sources:

Frequently Asked Questions

What is the Colorado state income tax rate for 2026?

Colorado has a flat income tax rate of 4.4% for 2026 applied to your federal taxable income. This rate can vary slightly from year to year due to TABOR (Taxpayer Bill of Rights) adjustments. When state revenue exceeds the constitutional cap, excess funds may be refunded to taxpayers, effectively lowering the rate.

Does Colorado have a standard deduction?

Colorado does not have a separate state standard deduction. Instead, it uses your federal taxable income as the starting point, which already incorporates the federal standard deduction. This makes Colorado's tax system simpler than states with separate deduction calculations.

What is TABOR and how does it affect Colorado taxes?

The Taxpayer Bill of Rights (TABOR) is a Colorado constitutional amendment that limits state revenue growth. When the state collects more revenue than allowed, the surplus is refunded to taxpayers in the form of a sales tax refund, property tax credit, or a temporary income tax rate reduction. This can lower your effective Colorado income tax rate below 4.4% in surplus years.

How does pay frequency affect my Colorado tax withholding?

Your total annual tax liability depends on your annual income, not how often you are paid. Changing from biweekly to monthly simply divides the same annual take-home into fewer, larger payments. Annual totals remain the same regardless of pay frequency.

Does Colorado tax Social Security and retirement income?

Colorado provides a retirement income deduction of up to $24,000 for taxpayers aged 65 and older (single filers) or $32,000 (joint filers). Social Security benefits are not taxed. Pension and retirement account distributions may qualify for the retirement income deduction, significantly reducing state tax for retirees.

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