Colorado LLC Taxes — Step 8 of 8
Determine the federal and Colorado filing obligations from the LLC’s tax classification, owners, activity and any separate SALT Parity election. The tool below illustrates a Colorado state taxable base only.
Colorado individual income tax starts with federal taxable income and applies Colorado additions, subtractions, credits and sourcing rules. The 2026 estimated-payment worksheet uses 4.4%. Federal self-employment tax has separate Social Security limits and Medicare rules; it is not a universal flat tax on all LLC profit.
- Default tax status
- Pass-through
- SE tax rate
- Social Security limits and Medicare rules apply
- CO state tax
- 2026 estimated worksheet: 4.4%; verify final return
- CO tax base
- Federal taxable income
- CO standard deduction
- None — uses federal
- QBI deduction
- Federal eligibility/limits; Colorado addbacks may apply
- Previous step
- ← Step 7
How a Colorado LLC Is Taxed by Default
Colorado’s 2026 estimated individual-tax worksheet uses 4.4%; confirm the final applicable tax-year return instructions and adjustments. Eligible partnerships and S corporations can make an annual, binding and irrevocable SALT Parity election through DR 1705 or DR 0106. The 2026 DR 1705 confirms this option for 2026. Entity tax, owner sourcing, DR 0106K allocations and credits must be coordinated. Qualifying owner credits depend on tax actually paid and required identification; applicable state-tax and federal section 199A deductions require Colorado addback review.
- Single-member LLCs report profit on Schedule C, attached to the owner's personal Form 1040.
- Multi-member LLCs file Form 1065 (informational) and issue each owner a Schedule K-1 showing their share of profit.
- Self-employment tax (15.3%) applies to net profit — this covers Social Security and Medicare, since there's no employer withholding it for you.
- Federal income tax applies via the standard progressive brackets, after the QBI deduction and standard deduction.
- Colorado's flat income-tax rate then applies on top, starting from your federal taxable income — Colorado doesn't calculate its own separate standard deduction; it simply uses the federal one baked into that starting figure.
Federal + Colorado Tax Estimator
Enter a separately determined Colorado taxable base for a 2026 estimated-rate illustration.
Colorado taxable-base illustration
Colorado 2026 estimated-payment worksheet rate, 4.4%; verify final return instructions. Enter a separately determined state taxable base; this is not net-profit-to-total-tax estimation.
Enter a non-negative taxable base.
Excludes federal income and self-employment taxes, deductions, credits, sourcing and PTE election comparisons. This tool does not prepare a return.
The S-Corp Election Option
A federal S-corporation election and a Colorado SALT Parity election are separate decisions. Review federal eligibility and reasonable compensation, annual state election rules, entity payments, owner credits and required addbacks.
Income tax, the $25 Periodic Report and sales-tax obligations are separate. The 2026 estimated individual-tax worksheet uses 4.4%; verify the final tax-year rate, adjustments and credits when preparing the return.
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2026 SALT Parity election is separate from federal classification
Colorado’s 2026 estimated individual-tax worksheet uses 4.4%; confirm the final applicable tax-year return instructions and adjustments. Eligible partnerships and S corporations can make an annual, binding and irrevocable SALT Parity election through DR 1705 or DR 0106. The 2026 DR 1705 confirms this option for 2026. Entity tax, owner sourcing, DR 0106K allocations and credits must be coordinated. Qualifying owner credits depend on tax actually paid and required identification; applicable state-tax and federal section 199A deductions require Colorado addback review.
Colorado LLC Taxes — FAQ
Ahmad Adil is the founder and CEO of LLC School. Consult the linked Colorado Department of Revenue worksheets and SALT Parity instructions for the actual tax year. This rate illustration does not certify a tax return or election recommendation.
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From naming your LLC to understanding your tax bill, you now have everything you need to form and run a Colorado LLC with confidence. Bookmark this guide — you'll likely come back to it as your business grows.