Related Information
Question: On the federal W-2 Form, which account number should be used as the "Employer's State ID?"
Colorado employers should put the Colorado wage withholding account number assigned by the Colorado Department of Revenue on the federal W-2 form where it reads "Employer's State ID." This is an eight-digit number assigned by the Colorado Department of Revenue.

You can now register online immediately to obtain a Colorado sales tax account number and/or a Colorado wage withholding account number through our Colorado Business Express service.

Business Express is the quick and easy way to obtain a tax account with the state of Colorado. One simple interface covers all the forms with all the state agencies and partners. Easy-to-read instructions and context-sensitive help make creating a business with Business Express safe, fast, and efficient.

If you cannot apply online for a tax account, you may submit a paper application form (CR 0100). It may take up to 6 weeks to receive the account number and license in the mail when you apply by paper.

Further Information:
CR 0100

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