Example 1. The taxable income on your original 2015 Form 1040 was $49,650 and you use the single filing status. You used the Tax Table in the 2015 Instructions for Form 1040 to find the tax, $8,213. You are amending your 2015 Form 1040 to add $160 of interest income, which you add in on line 1 of Form 1040X. Form 1040X Amended US Individual Income Tax Return is the tax form you use to amend your 1040, 1040A, 1040EZ and related forms. While some exceptions do exist, you generally must file Form 1040X within 3 years after the date you filed your original income tax return. Use Form 1040X to correct your filing status, number of dependents, total income, deductions, and credits. Substitute for Form W-2, Wage and Tax Statement, or Form 1099-R, Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, etc. Attach to Form 1040, 1040A, 1040-EZ, or 1040X. OMB No. 1545-0074 1 Name(s) shown on return 2 Your social security number 3 Address Download or print the 2021 Connecticut Form CT-1040X (Amended Income Tax Return for Individuals) for FREE from the Connecticut Department of Revenue Services. plus all federal income tax forms. Form Code Form Name; Tax Instruction Booklet: 2011 Form CT-1040X CT-1040X, 2011 Amended Connecticut Income Tax Return for Individuals (b) A copy of your amended federal income tax return (federal form 1040X) and either a copy of the IRS acceptance letter or a copy of the refund check. (Under federal law the copy of your check must either be larger than or smaller than the size of the original check. If you make a reduced-size copy, please make sure that the copy is legible.) final assessment, agreement, or judgment. Write the date the IRS notified you (not the date you filed your U.S. Form 1040X or Form 1045) in the appropriate space in Step 1, Line F, and attach proof of federal finalization as listed below. a balance due, you must attach a copy of your U.S. Form 1040X as proof of federal finalization. Write the date you filed Enter a term in the Find Box. Select a category (column heading) in the drop down. Click Find. Click on the product number in each row to view/download. Click on column heading to sort the list. You may be able to enter information on forms before saving or printing. Downloading and printing. File formats. For the latest information about developments related to Form 1040-X and its instructions, such as legislation enacted after they were published, go to IRS.gov/Form1040X. What's New. Form 1040-X renamed. Beginning with this January 2020 revision, Form 1040X will be called Form 1040-X. But to keep the text simple, we refer to Form 1040-X throughout. Form 1040X is a multi-year form which can be used for income tax years 2021, 2020, and 2019. Form 1040X and the 1040X instructions booklet are generally published in February of each year by the IRS. If published, the 2021 tax year PDF file will display, the prior tax year 2020 if not. Last year, many of the federal tax forms were published Edit, fill, sign, download Form 1040X (Rev. December 2011) online on Handypdf.com. Printable and fillable Form 1040X (Rev. December 2011) 11 Federal income tax withheld and excess social security and tier 1 RRTA . See Form 1040 or Form 1040A instructions and Form 1040X instructions. A. Original number. of exemptions or . amount reported The way to submit the IRS Instructions 1040X on the In