How to Change Last Year's Tax Filing
- 1). Go to the IRS website (see Resources). Navigate to the "Forms and Publications" section of the site.
- 2). Click on "Form and Instruction number (PDF)" under the "Download forms and publications by" heading.
- 3). Search for Form 1040X. This is the tax form that is used to make amendments to a previous year's tax filing.
- 4). Download and print Form 1040X.
- 5). Enter in your tax changes onto Form 1040X. Sign and date the form, and mail it to the address listed on the form with any supporting documentation that you may have, like a W2.
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