You should file returns for 2018 and 2019, using only information for those years. Then amend your 2020 return and remove the information from 2018 and 2019..
2018 and 2019 returns
If you want to use TurboTax for a prior year return you will need to purchase the Desktop Version for each year that you need to file. You can do that at this link: File past years' taxes If you want to prepare your returns by hand, you can download the Forms and Instructions free from the IRS web site at this link: IRS - Prior Year Forms
Amend Your 2020 return
Since you have already filed you have to wait until the IRS either rejects or accepts your return.
- If your return is rejected, you will be able to go into your account, make the changes to your tax return, and re-submit your return.
- If the IRS accepts your return, however, then you have to wait longer until it has been fully processed and you have received your refund. THEN you can prepare an amended tax return.
You will have to wait also, because the IRS hasn't yet released the 1040X for tax year 2020. Until the IRS releases the form TurboTax cannot include it in their software. For current information on forms availability please click on the applicable link below:
IMPORTANT: Meanwhile, DO NOT go in and start changing anything on your return in the system, or you will make a mess for yourself. Sit tight and wait until you see what the IRS does with the return you just e-filed.
Please see the instructions contained in these TurboTax articles to amend your return:
