Denver, CO Payroll Tax Registration

Apr 21, 2026

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.

Registered Agent in California

If you’re establishing and maintaining a new business in California, whether it’s a bustling tech startup in Sacramento, a thriving limited liability company (LLC) along the scenic coastline, or a California corporation or nonprofit in Silicon Valley, it’s important to know how to find and set up a registered agent. California registered agent services are fundamental for those with a California business address, as they help ensure your operations run smoothly and remain in good standing. Let’s look into what it means to have a registered agent in California and why it’s critical for your business formation’s success and compliance.

Gabrielle Sinacola | Jul 10, 2024

What Is Federal Tax Withholding?

Practically every employee in the United States is subject to federal tax withholding. In a nutshell, federal tax withholding keeps a certain amount of your employees’ paychecks to send directly to the government, estimating how much they owe for each tax year. Understanding the ins and outs of federal tax withholding is crucial for proper compensation, especially if you have employees in multiple states. So, let’s take a closer look.

Alex Kehayias | Oct 10, 2023

Illinois Paid Leave for All Workers Act: An Employers Guide 2024

The Illinois Paid Leave for All Workers Act launched major changes for businesses throughout the state as of January 2024. This law requires companies to provide paid leave to their staff members, a step meant to defend workers’ rights and welfare. Businesses in Illinois must maintain compliance with the new legislation. Understanding and applying the Act’s provisions is crucial for companies operating in Illinois, as non-compliance could result in fines and harm your reputation.

Gabrielle Sinacola | Sep 19, 2024

Ready to get started?

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