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Get the free Form 1040X Amended US Individual Income Tax Return

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What is Form 1040X

The Form 1040X Amended US Individual Income Tax Return is a tax document used by US taxpayers to correct or update their previously filed individual income tax returns.

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Form 1040X is needed by:
  • Individuals who filed an incorrect tax return
  • Taxpayers needing to add deductions or credits
  • People with changes in income or filing status
  • Taxpayers correcting their tax year 2014, 2013, 2012, or 2011 returns
  • Individuals seeking to claim tax credits after the original filing

How to fill out the Form 1040X

  1. 1.
    Access pdfFiller and search for 'Form 1040X' in the template section to open the form.
  2. 2.
    Once the form loads, review the instructions provided on the right side of the interface for guidance on filling out each section.
  3. 3.
    Gather necessary information such as your original tax return, personal data including your name, social security number, address, and details about all relevant income, deductions, and credits.
  4. 4.
    Begin filling in the fields provided by clicking on them using pdfFiller’s interface. You can use the tab key to move between fields easily.
  5. 5.
    Complete all required fields including your first name, current address, and types of income or deductions being amended.
  6. 6.
    Be sure to check the appropriate boxes for your filing status and ensure that all data is accurate.
  7. 7.
    Review the completed form thoroughly, ensuring that all information aligns with your supporting documentation.
  8. 8.
    Finalize your form by clicking the 'Save' button to store a copy, and if needed, select 'Download' to save it as a PDF for your records.
  9. 9.
    You may also choose to submit directly through pdfFiller if applicable, following the prompts for submission.
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    Ensure all signatures are complete by checking the signing fields. You may add a signature directly through pdfFiller’s electronic signature feature.
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FAQs

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Any US taxpayer who needs to amend a previously filed individual income tax return can use Form 1040X. This includes individuals who found errors or needed to add information after their original submission.
Form 1040X should be filed within three years of the original due date of the tax return being amended, or within two years from the date the tax was paid, whichever is later.
You can submit Form 1040X by mail to the relevant IRS address based on your state. Some taxpayers may also be able to file it electronically, depending on the software used.
You should include any relevant documents that support your amendments, such as W-2 forms, 1099s, or schedules that detail new deductions or credits.
Common mistakes include failing to sign the form, incorrect calculations, not including required supporting documents, and not checking if the boxes for your filing status are selected.
Processing time for Form 1040X typically takes up to 16 weeks, but it may vary depending on IRS workloads and the accuracy of your submission.
Yes, you can file Form 1040X to amend returns for multiple tax years, but you need to complete a separate Form 1040X for each tax year you wish to amend.
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