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Select a state from the drop-down list or visit the State-specific payroll tax form information topic to view payroll tax form information for that state.

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In this topic

Unemployment forms

Agency: Department of Labor & Employment

Website: https://cdle.colorado.gov/unemployment

* Due date adjusts for non-banking days

Tax payment details

Deposit Schedule	Due Date	Payment Method(s)	Zero Filing Required	Zero EFT Accepted
Quarterly	Last day of the following month	Check, ACH	N/A	N/A

	Accepted	Approval required
ACH Debit
ACH Credit

Agency filing addresses

Withholding forms

Agency: Colorado Department of Revenue

Website: https://cdor.colorado.gov/

* Due date adjusts for non-banking days

Tax payment details

Deposit Schedule	Due Date	Payment Method(s)	Zero Filing Required	Zero EFT Accepted
Weekly	3 banking days after the payroll	Check, ACH	Yes	Yes
Monthly	15th of the following month	Check, ACH	Yes	No
Quarterly	Last day of the following month	Check, ACH	Yes	No

	Accepted	Approval required
ACH Debit
ACH Credit

ACH / EFT payment information

The Colorado Department of Revenue accepts EFT Debit and EFT Credit payments of withholding taxes.

• Employers with annual wage withholding liabilities greater than $50,000.00 are required to pay via Electronic Funds Transfer (EFT).
• Employers who withheld less than that mandatory threshold can remit their taxes via EFT on a voluntary basis.

How to apply

The Colorado Department of Revenue requires all EFT users to apply for approval before submitting tax payment files.

For more information about making EFT payments and to obtain the State of Colorado's authorization agreement, please visit the Colorado Department of Revenue website and navigate to the Online Services > Electronic Tax Payment > Electronic Funds Transfer page.

Payment and other information

The ACH credit must be initiated on, or before, the due date. The transferred funds will be received the next day by the Department of Revenue.

Colorado local city of Aurora now accepts ACH credit payments of withholding taxes.

Agency filing addresses

Deposit Schedule	Due Date	Payment Method(s)	Zero Filing Required	Zero EFT Accepted

	Accepted	Approval required
ACH Debit
ACH Credit

Other forms

1099 forms

See also: State 1099 files overview

State website: www.colorado.gov/tax

Local forms

Select a locality to view its payroll tax forms.

Select a locality Aurora Denver Glendale Greenwood Village Sheridan

E-filing notes

Form UITR-1(a)

• Registration required - Yes
• File format - ICESA
• Navigate to the Colorado Department of Labor and Employment website and click the File Your Premium and/or Wage Report link under the Unemployment Online Services section.

Form COA STM 0101 (Aurora)

• Registration required - No
• File format - FSET

Note: There is a per-return transmission cost for electronically filing federal 94x forms; enrollment files do not accrue a fee. There is no additional transmission cost for electronically filing state forms. For more information, see Common questions about FSET.

State ID formats

Unemployment ID: 9 digits (can have additional non-digit characters)

Withholding ID: You can use one of the following formats.

• 8 digits
• 12 digits
• L or M followed by 7 digits or 11 digits

New hire reporting

Reporting methods

File Upload Type: Magnetic

General reporting requirements

Electronic filing required: No
Filing frequency: Twice monthly
Registration required: Yes

Website:

Related topics

State-specific payroll tax form information

Processing state payroll tax forms

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