1040 Forms

1040-X Form 2021 Amended Tax Return

Form 1040-X— Amended U.S. Individual Income Tax Return is used for making corrections to a previous year’s tax return. If there is any reason for you to make a correction to your previous tax return— do so with filing Form 1040-X.

There are many reasons why one might need to file Form 1040-X. The most common among these reasons is overpaying taxes. If you missed a credit on your tax return or an incorrect tax document that reports your income was given to you file an amended tax return to correct these mistakes.

e-Filing Form 1040-X

Under the IRS guidelines, Form 1040-X cannot be filed electronically. A paper Form 1040-X must be filed and mailed to the IRS. While it must be mailed, you certainly aren’t required to fill out one on paper. Form 1040-X can be filled out below. Click on the boxes you want to enter amounts and check the boxes.

If this is your first time filing a Form 1040 on your own, you may want to read Form 1040 instructions first.

Same as filing a regular Form 1040, you will provide information about your:

  • Income and Deductions
  • Tax Liability
  • Payments
  • Refund and Taxes Owed
  • Dependents

Generally, most would think filing Form 1040-X takes longer than filing a regular tax return. This isn’t really the case though. What will consume your time is gathering tax documents, not filing Form 1040-X. Having said that, you should prepare your documents first, then start filing Form 1040-X.

Online Fillable Form 1040-X

Start filling out Form 1040-X below. This is suitable for those who are going to mail their tax forms to the IRS. Since the IRS only accepts mailed amended tax returns and e-filing isn’t an option, this is what you need.

Use the buttons on the upper right corner to print out or download. The information you entered on Form 1040-X below will be attached to it. You can then mail it to the IRS.

Form 1040-X Mailing Addresses

State or SituationMailing Address
Alabama, Connecticut, Delaware, District of Columbia, Georgia, Kentucky, Maine, Maryland, Massachusetts, Missouri, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West VirginiaDepartment of the Treasury
Internal Revenue Service
Kansas City, MO 64999-0052
Alaska, Arkansas, California, Hawaii, Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, Oklahoma, Washington, WisconsinDepartment of the Treasury
Internal Revenue Service
Fresno, CA 93888-0422
Arizona, Colorado, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Utah, WyomingDepartment of the Treasury
Internal Revenue Service
Ogden, UT 84201-0052
Florida, Louisiana, Mississippi, TexasDepartment of the Treasury
Internal Revenue Service
Austin, TX 73301-0052
Notice received from the IRSTo the address shown in the notice
Received reimbursement for a hurricane lossDepartment  of the Treasury
Internal Revenue Service 
Austin, TX 73301-0255
Form 1040-X with Form 1040-EZ or Form 1040NRDepartment of the Treasury
Internal Revenue Service
Austin, TX 73301-0215

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