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  1. About Form W-9, Request for Taxpayer Identification Number

  2. Get an employer identification number | Internal Revenue Service

  3. File your taxes for free | Internal Revenue Service

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

  5. Help - EIN Assistant - Internal Revenue Service

  6. Tools | Internal Revenue Service

  7. Getting an EIN - Taxpayer Advocate Service

  8. What is IRS Form SS-4? A Step-by-Step Guide to Getting an EIN

  9. Get an Individual Taxpayer Identification Number (ITIN) to file …

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