City and County of Denver

Dec 10, 2025

Access the City and County of Denver here.

The City and County of Denver state agency in Colorado is responsible for overseeing local government operations and services within the city limits of Denver. This agency works to ensure compliance with state laws and regulations, while also providing essential services to residents and businesses in the area.

Agency Accounts

Denver OPT Account

Access your online account via Denver eBiz Tax Center.

The Denver OPT Account allows you to set up and manage the following information:

  • Denver OPT Account Number

Zero payroll penalties, zero distractions.

More from the blog

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

LLC Initial Report: What Is It and Requirements Explained

Starting a limited liability company (LLC) unlocks exciting possibilities for your business. You gain the protection of limited liability — shielding your personal assets from business debts and lawsuits. Plus, you have the flexibility to choose how your LLC is managed and taxed. However, with these exciting advantages come essential responsibilities. LLCs, like any business structure, need to play by the rules.

Kaitlin Edwards | Jun 25, 2024

What Is Wrongful Termination and How To Avoid as an Employer

Although most employers are considered at-will, many laws are designed to protect employees from wrongful firing. As an employer, there will inevitably come a time when you need to let someone go, but it’s important to do so legally and for the right reasons. Before terminating an employee, you must be aware of wrongful termination laws. Here’s what you should consider and how Mosey can help with state compliance.

Kaitlin Edwards | Jul 17, 2024

Arizona Flat Tax: Business Owners Guide

In 2023, Arizona changed from the commonly utilized progressive tax structure to a simplified flat tax system. The state has been slowly modifying tax rules over the course of the past few years and will finally settle into its desired (and lowest) income tax rate. The flat tax system changes tax liability and compliance rules for all taxpayers. If you own a business in Arizona, here’s what you need to know about how the change may impact your employees and the way you manage your taxes.

Alex Kehayias | Mar 2, 2024

Ready to get started?

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