Denver, CO Payroll Tax Registration

Apr 18, 2025

If you are an employer in Denver, Colorado, it is important to be aware of the local payroll tax requirements for businesses operating in the city. These requirements may include registering your business with the city and withholding a certain percentage of your employees' wages for local taxes.

How to Register for Payroll Tax in Denver

Denver Occupational Privilege Tax Setup for LLP, LLC, Corporation

You must register for the city's Occupational Privilege Tax (OPT) -- a "head tax" imposed on Denver employers and employees -- if you have employees in Denver, Colorado. Employers must pay $4 per month for each taxable employee (if they earn at least $500 monthly) and withhold $5.75 per month from each taxable employee. Note: 501(c)(3) nonprofit organizations that may qualify for exemption from the business portion of OPT will still be required to register in order to pay and report the $5.75 per month Employee OPT from each employee that receives compensation of $500 or more per month.

  1. Confirm OPT Filing Frequency with Payroll Provider

    Employers with ten or fewer employees may file Denver OPT quarterly instead of monthly. However, many payroll providers only support the monthly filing frequency. Therefore, confirm your filing frequency with your payroll provider during account registration.

  2. Register as a New Business in Denver eBiz Center

    Complete the new business registration in Denver eBiz Center to register for an Occupational Privilege Tax account. You will need to create a Denver eBiz Center username during registration. Once your registration is processed, you will be assigned a 12-digit Occupational Privilege Tax account number, e.g., 123456-123456. Your Denver Taxpayer ID is the first six digits before the dash. Note: It may take up to 5 days to process your registration.

Documents and Resources

Accounts Logins

Denver, CO Payroll Registration Agencies

Use Mosey to register for payroll accounts in Denver.

Register for payroll taxes with the state of Colorado

More from the blog

Learn how to keep your business compliant in all 50 states across payroll, HR, Secretary of State, and tax.

Wyoming Surety Bond: Nonresident Employer Bond Compliance (2024)

Doing business in Wyoming can be a rewarding venture. However, if you’re a nonresident employer, there’s one crucial compliance requirement you need to know about: the Wyoming Surety Bond. This bond is a type of insurance that protects your employees and the state. In this article, we’ll help you better understand the Wyoming surety bond process and what it means for you and your business. What Is Nonresident Employer Status in Wyoming?

Gabrielle Sinacola | Jul 23, 2024

15 Crucial HR Policies for Your Employee Handbook

Creating an employee handbook with clear HR policies can save businesses a lot of grief in the long run. A handbook helps define company expectations, guides employees, and ensures compliance with legal standards. This is Mosey’s guide to the 15 crucial HR policies that should be included in your employee handbook. These policies help maintain a healthy work environment and protect your company and its employees. Are Employers Required To Have an Employee Handbook?

Gabrielle Sinacola | Nov 11, 2024

Exiting a PEO: Reasons, Considerations, and Checklist

If you work with a professional employer organization (PEO), it’s a good idea to regularly reevaluate the relationship. Growing businesses can reach a point where the costs of working with a PEO outweigh the benefits, and some companies expanding into new states may also run into limitations on what PEOs can do there—eliminating the PEO’s original value proposition. If you’re dissatisfied with your PEO or your business circumstances have changed, it may be time to leave.

Gabrielle Sinacola | May 15, 2023

Ready to get started?

Schedule a free consultation to see how Mosey transforms business compliance.