Colorado Paycheck Calculator

How to estimate your Colorado take-home pay in 2026

Colorado uses a flat 4.4% state income tax rate, which makes paycheck math simpler than in states with long progressive bracket schedules. This calculator estimates your 2026 net pay after federal withholding, FICA payroll taxes, and Colorado state tax so you can compare job offers and plan monthly expenses with confidence.

Enter your annual salary or build it from hourly wages using our gross pay calculator. If you receive 26 paychecks per year, the biweekly pay calculator shows how gross and net amounts spread across the calendar. For federal tax details and dependent credits, see the income tax calculator and salary calculator. Utah uses a similar flat state rate in the Utah paycheck calculator.

What gets deducted from a Colorado paycheck

A typical Colorado W-2 paycheck includes three layers of mandatory withholding plus any voluntary deductions you elect through your employer:

• Federal income tax: Calculated from 2026 IRS brackets, your W-4 filing status, and qualifying child tax credits.
• FICA taxes: Social Security at 6.2% (capped at the 2026 wage base of $184,500) and Medicare at 1.45%, with an additional 0.9% on wages above $200,000 for single filers. Use our FICA tax calculator to isolate these amounts.
• Colorado state income tax: A flat 4.4% applied to federally taxable wages after pre-tax deductions.

Colorado does not levy a separate state disability insurance tax like California SDI. Pre-tax 401(k) contributions and HSA deposits reduce both federal and Colorado taxable income, lowering overall withholding.

How Colorado flat tax is calculated

Since Colorado moved to a flat tax structure, state withholding follows a straightforward formula. The state taxes the same federally taxable wage base that remains after standard or itemized deductions and pre-tax retirement contributions:

Because the rate is flat, your Colorado marginal rate stays at 4.4% regardless of income level. That predictability makes Colorado attractive to high earners compared with progressive states like California or Connecticut, where top marginal rates exceed 10%. Other flat-tax states include Georgia, Idaho, Illinois, Indiana, and Iowa.

Federal taxable wages in this calculator

Federally taxable wages start with gross annual salary, subtract pre-tax 401(k) deferrals and HSA contributions, then apply the 2026 federal standard deduction ($16,100 for single filers, $32,200 for married filing jointly, $24,150 for head of household). The resulting figure drives both federal bracket calculations and the Colorado flat tax.

Worked example: $65,000 salary, single, biweekly, 5% 401(k)

Consider a single Colorado employee earning $65,000 per year, paid biweekly, contributing 5% to a traditional 401(k), with no dependents or health premium deductions:

1. Pre-tax 401(k): $65,000 x 5% = $3,250 per year
2. Federal taxable wages: $65,000 - $3,250 - $16,100 (standard deduction) = $45,650
3. Colorado state tax: $45,650 x 4.4% = $2,008.60 per year
4. FICA: Social Security and Medicare on the full $65,000 gross (401(k) does not reduce FICA wages)
5. Estimated net per paycheck: About $1,905.34 biweekly after all withholdings

If you expect a performance bonus on top of base salary, estimate the gross amount with our bonus calculator and add it to your annual salary before running this tool.

Colorado vs. neighboring state tax burdens

Colorado sits in a region with varied tax policies. Compare your salary against Arizona (2.5% flat rate), Alaska (no state income tax), and California (progressive rates up to 12.3% plus SDI). Running the same inputs through each state calculator reveals how relocation affects your monthly budget.

Frequently asked questions