LLC EIN Number: How to Find It or Get One
Last updated November 5, 2026 · Written by the EIN Registration filing team
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Start Now →Is it the EIN or the state number?
| EIN | State LLC number | |
|---|---|---|
| Issued by | IRS | Your state’s business filing office |
| Looks like | Nine digits, 12-3456789 | Varies by state |
| Used for | Federal taxes, banks, W-9s | State filings and business searches |
| How you get it | You apply | Comes with formation |
The full comparison is in LLC number vs EIN.
Where to find your LLC’s EIN
- The CP 575 letter from the IRS, or the PDF saved when you applied online.
- A filed federal return for the LLC.
- Your bank, if the business account was opened with it.
- Your formation company’s account, if it applied for you.
- Payroll records, W-9s or state tax registrations.
If none of those has it, the responsible party can call the IRS at 1-800-829-4933 and ask for a 147C letter. For a step-by-step version, see how to find your LLC’s EIN.
If the LLC never got one
Apply in the LLC’s exact legal name. How to get an EIN for an LLC covers each situation. Check the places above first, because applying again when a number exists leaves the LLC with two.
Looking up another company’s number
The IRS has no public EIN search. Our free EIN lookup searches the public records where EINs appear. For a company you are paying, the normal route is to ask for a Form W-9.
Quick answers
Is my LLC number the same as my EIN?
No. The LLC number comes from the state when the LLC is formed. The EIN comes from the IRS, and you have to apply for it.
Does every LLC automatically get an EIN?
No. Forming an LLC with the state does not create one, unless your formation company applied for you.
Can I look up my LLC's EIN online?
Not at the IRS, which has no public search. Some public records show EINs, and our free EIN lookup searches those.
Can an LLC have more than one EIN?
Normally one. A second number usually comes from a duplicate application or a change of structure.
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Related guides
- How to Find Your LLC's EIN Number The six places an LLC's EIN is already written down, the state filing number that is not it, the case where the LLC never had one, and the 147C call that always works.
- LLC Number vs EIN: Your Secretary of State Number Is Not a Tax ID The state assigns your LLC number and the IRS assigns your EIN. What each is for, why forming an LLC does not get you an EIN, and what all 50 states call their number.
- How to Get an EIN for an LLC, by Situation What to do for your LLC's EIN when it is brand new, has one owner, has several, or already has a number.
- EIN Number Format: What an EIN Looks Like Nine digits written XX-XXXXXXX, with a prefix that shows the IRS campus or the online application and no check digit. Every valid prefix from the IRS's list, EIN vs SSN vs ITIN at a glance, and the formatting mistakes that get forms rejected.
- Lost EIN? How to Get an IRS 147C Verification Letter The 147C is the letter the IRS sends to confirm an existing EIN when the CP 575 is gone. Who may ask, the exact call, fax or mail delivery, and the five places your EIN is already written down.
You can also apply for an EIN directly with the IRS at irs.gov at no cost.