Yes, you can file amended income tax returns even if you did not initially use TurboTax to file your federal income tax returns.
You can find TurboTax software from previous years at Past
years' taxes.
Instructions on how to prepare the amended return can be found below. After you click on the year you want to amend, you should select the option to amend using CD/downloaded software.
Please note that these instructions assume that you prepared your return using TurboTax. Since you did not, you will want to enter the information from your return as originally filed, then proceed starting in Step 3. https://ttlc.intuit.com/replies/3288565
After you have prepared your amended return and are ready to mail Form 1040-X you should include the following forms:
- The new (amended) Form 1040
- Any forms or schedules that were added or changed as a result of preparing the amendment
Please note that 1040-X cannot be e-filed - you will need to mail a paper return. It takes the IRS at least 2 - 3 months (and sometime up to 6 months) to process amended returns. Also, depending on whether the changes affect your numbers, you may also be required to file an amended return with your state.
The mailing address for you state and situation can be found at Instructions for Form 1040X. Look under Where to File on page 18.
