Deadline extended! The state-collected sales tax filing and payment deadline for January 2026 has been extended to March 2, 2026.

 
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DR 1107 - 1099 Income Withholding Tax Return

The DR 1107 Income Withholding Tax Return should be filed for current year 1099 withholding only. Review publication FYI Withholding 7, Colorado 1099/W-2G Income Withholding Tax Requirements for detailed information about filing requirements and frequencies.