Colorado New Employer Registration

Last reviewed: July 2026

Hiring your first employee in Colorado kicks off a set of registration requirements at both the federal and state level. Complete them out of order and you risk paying an employee before your accounts even exist. This guide covers each step in the sequence that actually works.

Registration Overview

Here's what every new Colorado employer needs on file before running payroll:

• ☑ Federal Employer Identification Number (EIN)
• ☑ Colorado withholding account (Department of Revenue)
• ☑ Colorado SUI account (CDLE)
• ☑ Workers' compensation insurance
• ☑ New hire reporting set up

Step 1: Get Your Federal EIN

Your Employer Identification Number is the federal tax ID that anchors every registration that follows. Apply for free at IRS.gov/EIN, and an online application submitted during business hours returns your EIN immediately.

Step 2: Register With the Department of Revenue

Visit tax.colorado.gov to register for a state withholding account. This lets you legally withhold Colorado income tax from paychecks and remit it on schedule.

From the Payroll Desk

State registrations can take a few business days to process. Start this step the same week you decide to hire, not the week payroll is due.

Step 3: Register for SUI

Register for a State Unemployment Insurance account through CDLE. You'll be assigned an employer account number, an introductory SUI rate, and a quarterly filing schedule.

• New employer rate: around 1.7% for 2026, though your exact figure depends on industry and any active solvency surcharge.
• Taxable wage base: $30,600 per employee for 2026.
• Filing: quarterly wage reports, even in quarters with no wages paid.

See our Colorado SUI Rates 2026 guide for a deeper look at how experience rating works after your first year or two.

Step 4: Workers’ Compensation Insurance

Colorado requires workers' compensation coverage starting with your very first employee, with narrow exceptions for certain independent contractors and sole proprietors with no employees. Purchase coverage through a private carrier, and compare quotes across a couple of insurers since rates vary by industry classification.

Step 5: New Hire Reporting

Federal and Colorado law require every new hire reported within 20 calendar days of their start date, through the Colorado State Directory of New Hires. This data feeds child-support enforcement systems nationwide, and Colorado also uses it to help detect unemployment fraud.

Rehires count too: if someone returns after a 60-day-plus break in service, report them again as if they were new. Our New Hire Reporting guide covers the federal side of this requirement.

Frequently Asked Questions

Where do I register a new business as an employer in Colorado?

Register for withholding with the Colorado Department of Revenue at tax.colorado.gov, and register for unemployment insurance with the Colorado Department of Labor and Employment (CDLE) at cdle.colorado.gov. Both are required, and both are separate from your federal EIN.

How long does Colorado employer registration take?

A federal EIN is issued instantly online. State registrations with the Colorado Department of Revenue and CDLE typically take a few business days to process, so register as soon as you know you will be hiring rather than waiting until payroll week.

What SUI rate will a new Colorado employer pay?

New employers generally start at an introductory rate of about 1.7% in 2026, applied to the first $30,600 of each employee's wages. CDLE assigns the exact rate based on industry classification and mails an annual rate notice.

Once your Colorado accounts are set up, Gusto can take over the ongoing work: withholding calculations, quarterly SUI filings, and year-end W-2s, all tied to the account numbers you registered above.