Colorado EIN Lookup
Last updated November 5, 2026 · Written by the EIN Registration filing team
Look up a Colorado company
No EIN yet for your Colorado business?
We file the SS-4 for you. EIN typically emailed in 2 to 4 business days (about 11 by fax).
Where to look in Colorado
- Colorado Secretary of State business database. Search by business name, trade name, trademark, ID number or document number.
- Colorado's Department of Revenue issues its own Colorado Account Number, or CAN, which is different from the EIN. It appears on the sales tax license as the first eight digits of the Use Account Number.
Colorado numbers that get mistaken for an EIN
None of these is the nine-digit federal number unless the table says so. A bank, payroll company or client asking for your EIN wants the one the IRS issued.
| Used for | Issued by | The number |
|---|---|---|
| Company formation | Colorado Secretary of State | Colorado entity ID |
| State income tax withholding | Colorado Department of Revenue | Colorado Account Number (CAN), 8 digits |
| Unemployment insurance | Colorado Department of Labor and Employment | Account number issued at registration |
| Sales tax | Colorado Department of Revenue | Sales tax license |
Finding your own Colorado company’s EIN
Start with the CP 575 letter the IRS sent when the number was issued, then a past federal return, your bank’s account paperwork and your payroll provider. If none of those has it, the responsible party can call the IRS and ask for a 147C letter. Do not apply again to replace a lost number: a second application creates a second EIN for the same company.
Finding another Colorado company’s EIN
If you pay them, ask for a Form W-9: it is the normal way to get the number, and you need it for a 1099 anyway. Nonprofits are in the IRS Tax Exempt Organization Search, and public companies print theirs on SEC filings. For a private Colorado company with no reason to give it to you, there is no free public source that is complete. To check a number you were given, see how to verify an EIN.
Colorado EIN lookup questions
Does Colorado have an EIN lookup?
The EIN is federal, so the IRS issues it and Colorado does not. The Secretary of State's FAQ lists what a record contains, with no tax ID, says the entity ID is not the same as your tax ID number, and sends readers to the IRS and the Department of Revenue.
Is my Colorado Colorado entity ID my EIN?
No. The Colorado entity ID comes from the Colorado Secretary of State and identifies your company in state records. The EIN comes from the IRS, and a bank or payroll company asking for one will not accept the state number.
I formed my Colorado company but never got an EIN. What now?
Forming the company does not create an EIN. You apply separately with the IRS on Form SS-4, or a service like ours prepares and files it for you. If you might already have one, check first: applying again gives the same company a second number.
Get Your EIN the Easy Way
Answer a few questions in about 5 minutes. Our specialists prepare your IRS Form SS-4, file it, personally handle any rejection or name conflict along the way, and get your EIN to you, typically within 2 to 4 business days, or about 11 when the IRS requires the application by fax. One flat $197 service fee. No upsells, no subscriptions.
- ✓ Prepared and filed by specialists
- ✓ Error 101 and rejection handling included
- ✓ Data encrypted (AES-256)
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Sources
You can also apply for an EIN directly with the IRS at irs.gov at no cost.