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  1. Forms & instructions - Internal Revenue Service

  2. Prior year forms and instructions | Internal Revenue Service

  3. 2020 Individual Income Tax Forms - Illinois Department of Revenue

  4. 2020 IL-1040 Individual Income Tax Return - Illinois Department …

  5. Federal tax forms - USAGov

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

  7. Tax Forms, Calculator for Tax Year 2020 - e-File

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