How do I register for Colorado payroll taxes?

Registering for Colorado Payroll Tax Account Numbers

Colorado requires employers to register with the Department of Revenue and Department of Labor & Employment. You can register for both online.

Department of Revenue Account Number

• Register online
• Format: 8 digits (99999999)
• To find an existing account number, call: (303) 238-7378

Department of Labor & Employment Employer Account Number

• Register online
• Formats: (999999999, 999999-99-9-999, 9999999.999-9, 999999.99.9, 999999.99-9, 99999999999)
• To find an existing account number, call: (303) 318-9100 or (800) 480-8299

Colorado Payroll Taxes

Payroll Tax Rates

The Department of Labor & Employment will assign your unemployment insurance tax rate. The Department of Labor & Employment will assign your Total Surcharge/Bond Principal rate.

Payroll Tax Deposit Schedules

All unemployment taxes are deposited quarterly.

The Department of Revenue will assign your withholding deposit schedule. In the previous calendar year, if you accumulated:

• less than $7,000 in withholding, you’ll deposit quarterly
• $7,000-$50,000 in withholding, you’ll deposit monthly
• more than $50,000 in withholding, you’ll deposit weekly