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  1. Forms & instructions - Internal Revenue Service

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

  3. Printable IRS Form 1040 for Tax Year 2020 - CPA Practice Advisor

  4. IRS tax forms - Tools | Internal Revenue Service

  5. Form 1040 U.S. Individual Income Tax Return 2020 - omb.report

  6. Download 2020 Tax Forms (Prior Year Filing) - FreeTaxUSA®

  7. Prior year forms and instructions | Internal Revenue Service

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