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  1. Taxpayer identification numbers (TIN) - Internal Revenue Service

  2. Get an employer identification number | Internal Revenue Service

  3. Employer identification number | Internal Revenue Service

  4. How To Get A Tax ID Number (2025 Guide) – Forbes Advisor

  5. Get federal and state tax ID numbers - Small Business …

  6. Free EIN Lookup: How Do I Find My EIN Online? - Forbes

  7. Taxpayer Identification Number - Wikipedia

  8. How to Find a Federal Tax ID Number: EIN Lookup - wikiHow

  9. What Is a Tax ID Number and When Do You Need One? - MSN

  10. EIN Number Lookup - ChamberofCommerce.com