Colorado Income Tax Brackets — 2026

Find your tax bracket based on income and filing status. Compare federal and state tax rates side by side.

Colorado residents who work for themselves face a unique combination of federal and state tax obligations. This page provides state-specific guidance for income tax brackets in Colorado for the 2026 tax year, drawing on IRS publications and Colorado tax authority data.

Colorado imposes a state income tax with 1 tax bracket and a top marginal rate of 4.4%. The state standard deduction is $16,100, and self-employed residents must pay both federal and state income taxes on their net earnings. Forming an LLC in Colorado costs $50 in state filing fees. LLCs in Colorado must pay an annual report fee of $10. The state sales tax rate in Colorado is 3%, which applies to most business purchases and sales of taxable goods. Quarterly estimated tax payments are due April 15, June 16, September 15, and January 15 in Colorado. Understanding these obligations before you file prevents penalties and identifies legitimate savings opportunities.

Quick Colorado Tax Estimate

Based on Colorado's tax rates for 2026. Sample calculation for $80,000 net profit.

State Tax on $80K Profit
$1,858.92
SE Tax
$11,303.64
Effective Rate
22.5%
Marginal Rate
12%
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Colorado Tax Facts — 2026

Colorado State Income TaxYes
Colorado Sales Tax3%
LLC Filing Fee$50
Annual Report Fee$10

How to Use This Calculator

Review the Colorado-specific information on this page, then use the linked calculators to compute your personalized estimates. Enter your income and expenses, select Colorado, and review your results. Cross-check key figures against the official Colorado tax authority website linked in the resources section.

Why Getting This Right Matters

Tax mistakes cost Colorado self-employed individuals real money — penalties, interest, and missed deductions. Accurate state-specific guidance means paying exactly what you owe, claiming every deduction available, and avoiding costly surprises. The 8% IRS underpayment rate plus Colorado state penalties make accuracy a financial necessity.

Colorado Income Tax Brackets (2026)

Tax RateFromTo
4.4%$0No limit

Frequently Asked Questions

What are the tax obligations for self-employed workers in Colorado?
Self-employed Colorado residents pay 15.3% federal self-employment tax, federal income tax, and Colorado state income tax. Quarterly estimated payments are required if you expect to owe $1,000+. Use our self-employment tax calculator for your personalized estimate.
Where can I find official Colorado tax information?
The authoritative source is the Colorado Department of Revenue website, linked in the resources section below. The IRS website provides federal guidance including Schedule SE instructions and Publication 334. Always verify current-year figures with official sources before filing.
What forms do Colorado self-employed individuals file?
Federal: Form 1040 with Schedule C (business profit/loss), Schedule SE (self-employment tax), and Form 1040-ES (quarterly estimates). Colorado requires a separate state income tax return — check the state Department of Revenue website for the exact form number and filing method.
How does Colorado compare to other states for self-employed taxes?
Colorado imposes a state income tax with 1 tax bracket and a top marginal rate of 4.4%. The state standard deduction is $16,100, and self-employed residents must pay both federal and state income taxes on their net earnings. Compare your total tax burden against all 50 states using our state tax comparison tool to see potential savings from relocation or remote work.

Official Resources & References

Disclaimer: This calculator provides estimates for informational purposes only. It does not constitute tax, legal, or financial advice. Tax laws change frequently and vary by individual circumstances. Always consult a qualified CPA or tax professional before making tax decisions.