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  1. Internal Revenue Service | An official website of the United States ...

  2. Payments - Internal Revenue Service

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  4. Internal Revenue Service (IRS) - USAGov

  5. Tools | Internal Revenue Service

  6. Taxes - USAGov

  7. Internal Revenue Service - Wikipedia

  8. Get federal tax return forms and file by mail - USAGov

  9. IRS Free File | Internal Revenue Service - IRS tax forms

  10. Online account for individuals | Internal Revenue Service