CO 106 Information
An S corporation/Partnership must file Form 106 for any year it is doing business in Colorado. An S corporation will be deemed to be doing business in Colorado if it is engaged in any activities in Colorado which are beyond the protection afforded by Public Law 86-272.
Link to official form info: Colorado 106
Link to official form info for 106
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- Upcoming Due Dates in the Next Year:*
- Wednesday Apr 15, 2026
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* Due dates are based on the filing requirements for this form and may vary depending on your tax year.
9 Colorado Tax Filings & Forms:
104 - Individual Income Tax Form 104PN - Part-Year Resident/Nonresident Tax 112 - C Corporation Income Tax 106 - Pass-Through Entity and Composite Nonresident Income Tax DR 1094 - Department of Revenue W-2 Wage Withholding Tax Return DR 1093 - Annual Transmittal of State W-2 Forms DR 0100 - Retail Sales Tax Return DR 1094 - Income Withholding Tax 106 - Partnership Income TaxAre we missing a Colorado tax form?
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