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State Guide

EIN in Colorado (CO)

How to get an EIN for your Colorado business. The EIN is a federal number from the IRS. Colorado has 4.4% flat state income tax.

Getting an EIN in Colorado follows the same federal IRS process as every other state. The EIN is a federal number — not state-specific. Colorado (CO) has 4.4% flat state income tax. Your EIN (XX-XXXXXXX) is issued by the IRS and works nationwide. Apply free at irs.gov (SSN required) or through ein.so ($49 for non-residents).

Colorado

EIN in Colorado (CO)

| Detail | Information | |--------|------------| | State | Colorado (CO) | | State Income Tax | 4.4% flat state income tax | | LLC Filing Fee | $50 filing fee | | State Tax Authority | Department of Revenue | | Federal EIN | Same as all states (IRS) | | EIN Cost | $0 (IRS) / $49 (ein.so) |

Federal EIN vs Colorado State Tax ID

Your federal EIN and Colorado state tax registration are separate:

  • Federal EIN — From IRS, for federal taxes (Form SS-4)
  • Colorado State Tax ID — From Department of Revenue, for state taxes

You may need both. Your EIN does not replace state tax registration.

See state tax ID for more details.

How to Apply

How to Get an EIN in Colorado

| Method | Speed | Cost | |--------|-------|------| | Online | Instant | Free | | Fax | 4-7 days | Free/$49 | | Phone | Same day | Free | | Mail | 4-6 weeks | Free |

The process is identical regardless of state. See how to get an EIN for complete instructions.

Colorado Business Requirements After EIN

  1. Register with Department of Revenue for state taxes
  2. Obtain local business licenses
  3. File BOI report with FinCEN (federal)
  4. Open a business bank account

Other States

EIN in Other States

Massachusetts | Arizona | Tennessee | Maryland

Browse all: EIN by State

Apply for your EIN — $49

Frequently Asked Questions

Is a Colorado EIN different from a federal EIN?

No. The EIN is a federal number issued by the IRS. It is the same 9-digit number regardless of which state you operate in. Colorado does not issue its own version of an EIN.

How do I get an EIN in Colorado?

Apply through the IRS: online at irs.gov (instant, SSN required), by fax to 855-215-1627 (4-7 days), by phone at 800-829-4933 (same day), or through ein.so ($49 for non-residents).

Does Colorado have a state tax ID?

Yes. Colorado issues its own state tax registration through the Department of Revenue. This is separate from your federal EIN. You may need both depending on your business activities in Colorado.

How much does it cost to get an EIN in Colorado?

The EIN is free from the IRS ($0). Colorado LLC formation costs $50 filing fee. ein.so charges $49 for EIN filing assistance for non-residents.

What is the Colorado state income tax rate?

Colorado has 4.4% flat state income tax. This is separate from federal taxes. Your EIN is used for federal tax reporting, while your state tax ID is used for Colorado state taxes.

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