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Colorado Payroll Guide

State tax information for employers running payroll in Colorado, including agency contacts, supported filings, and account setup requirements for withholding, unemployment insurance, FAMLI, and local withholding.

Written by Kate Biel

📝 Overview

This guide covers state tax information for employers running payroll in Colorado. Use the sections below to find agency contact information, supported tax filings, and the account details required for tax setup.

⚙️ Colorado Tax Information

Click the arrow to view Withholding information

Agency Information

Website: Colorado Department of Revenue
Phone: (303) 238-7378

New employers: Register here
Registered employers: Access account here

Supported Tax Filings

  • Colorado W-2 Wage Withholding Tax Return (DR 1094)

  • Wage and Tax Statement (W-2)

Required for Tax Setup

  1. Withholding Account Number (8 digits, e.g., 12345678)

  2. Filing Frequency (Weekly, Monthly, or Quarterly)

Third Party Administrator (TPA) Access

DaySmart Payroll needs granted TPA access to pay and file this tax. Follow the instructions below to ensure there are no delays in processing:

  1. Sign in to the Revenue Online portal

  2. In the top right corner of the page, select Manage my profile

  3. On the next screen, find the Access box and select Manage Third Party Access

    1. You must have full access in Revenue Online to complete this setup. If you are unsure, contact your payroll admin before continuing.

  4. On the Add Third Party Online Access page, select Next and enter the following:

    1. Username: salsasoft

    2. Access level: All access

    3. Access start date: Select the first day of the quarter payroll began (January 1, April 1, July 1, or October 1)

      1. Example: If your first paycheck was February 14, 2025, enter 1/1/2025.

  5. Select Submit

⚠️ If you see an error with no explanation, the Colorado Department of Revenue may need to manually grant access. Call them at (303) 238-7378 and ask a representative to grant access to your account.

Click the arrow to view Unemployment Insurance information

Agency Information

Website: Colorado Department of Labor and Employment
Phone: (303) 318-8000

New employers: Register here
Registered employers: Access account here

Supported Tax Filings

  • Unemployment Insurance Tax Report (UITR-1)

Required for Tax Setup

  1. Unemployment Account Number (8 or 9 digits, e.g., 123456.78-9 or 12345678)

  2. Total Combined Rate (X.XX%)

Third Party Administrator (TPA) Access

DaySmart Payroll needs granted TPA access to pay and file this tax. Follow the instructions below to ensure there are no delays in processing:

  1. Sign in to your MyUI Employer+ account

  2. In the main menu, select Account Maintenance, then select Third Party Administrator (TPA)

  3. Scroll to the bottom of the page and select New

  4. On the Assign Third Party Administrator (TPA) page, enter the TPA ID: 500007060

  5. Select Next

  6. Under TPA Details, enter the following:

    1. TPA Services Begin Date: Select the first day of the quarter payroll began (January 1, April 1, July 1, or October 1)

    2. TPA Services End Date: Leave this blank

  7. Under Un-Assigned Roles, select only the following:

    1. Edit Account Maintenance

    2. Submit Employment and Wage Detail

    3. Edit Tax Payments, Update and Submit

    4. View Rate Notice and Voluntary Contribution

  8. Select Save

⚠️ Do not select any roles under Benefits, Workshare, or Mailing. Selecting extra roles can cause access issues.

Click the arrow to view Paid Family & Medical Leave Insurance (FAMLI) information

Agency Information

Website: Colorado Family & Medical Leave Insurance
Phone: (866) 263-2654

New employers: Register here
Registered employers: Access account here

Supported Tax Filings

  • Family and Medical Leave Insurance Wage Report (FAMLI)

Required for Tax Setup

  1. FAMLI Account Number (10 digits, e.g., 1234567890)

  2. Total number of Colorado employees

Third Party Administrator (TPA) Access

DaySmart Payroll needs granted TPA access to pay and file this tax. Follow the instructions below to ensure there are no delays in processing:

  1. Sign in to your MyFAMLI+ Employer account

  2. In Manage My Account, select Manage Accounts

    1. If this option is not visible, contact the agency at (866) 263-2654 for assistance.

  3. In the Account Name column, select your tax account

    1. If the account is not visible, use the Search box to locate it.

  4. Scroll down to Third Party Administrator and select Add

  5. In TPA Account, enter the following information:

    1. Select Account: Salsa Software, Inc (FEIN 87-1539043)

    2. Start Date: Select the first day of the quarter payroll began (January 1, April 1, July 1, or October 1)

  6. Select Save

  7. Confirm the information is correct, then select Yes, Add TPA

Click the arrow to view Local Withholding information

Colorado has local withholding taxes in addition to state withholding. DaySmart Payroll supports paying and filing most localities; however, each city or county sets its own rules and a full list cannot be provided here. If a local tax applies, you will be prompted to enter the necessary tax information during account setup.

❓ Frequently Asked Questions (FAQs)

Find answers to common questions or additional details that may not be covered in the main instructions.

Click the arrow to view frequently asked questions

Where do I find my Colorado withholding account number?

Click the arrow to see the answer

Your Colorado withholding account number is assigned by the Colorado Department of Revenue when you register. It is an 8-digit number and can be found on correspondence from the agency or by logging into your Revenue Online account.

What is Colorado FAMLI and am I required to participate?

Click the arrow to see the answer

Colorado FAMLI (Family and Medical Leave Insurance) is a state-run paid leave program funded by employer and employee contributions. Most Colorado employers are required to participate. You will need a FAMLI Account Number and your total Colorado employee count to complete setup. Contact the FAMLI program at (866) 263-2654 if you are unsure whether your business is required to participate.

What if my city or county has a local withholding tax?

Click the arrow to see the answer

If a local withholding tax applies to your business, you will be prompted to enter the required tax information during account setup. Each Colorado city or county sets its own rules. If you have questions about a specific locality, contact DaySmart Support for guidance.

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