How to Find Your LLC Registration Number and Business Tax ID (EIN)

To provide your LLC details for a professional account, you may need both your **Registration Number** and your **Business Tax ID**. ## Find your LLC registration number You can usually find your LLC registration number at the **top of your formation document**. This is the document you received when you first registered your business with the state. If you cannot locate that document, check any **official correspondence** you received during the formation process. ## Find your business tax ID Your business tax ID is commonly your **Employer Identification Number (EIN)**. You can usually find your EIN on the **EIN confirmation letter** you received from the **IRS** when you applied for it. If you do not have that letter, you may also find your EIN on: - **Business tax returns** - Other **official business documents** related to your company ## Summary - **Registration Number:** Usually located at the top of your LLC formation document - **Business Tax ID (EIN):** Usually found on your IRS EIN confirmation letter or your business tax returns