If the IRS changed something on your return - they will notify you. The notice will be sent by mail and will have instructions on what you can do if you disagree with the changes they have made.
The “lookback” rule, you can choose to use your 2019 earned income information to determine your eligibility for the Earned Income Credit and the Additional Child Tax Credit if your 2020 earned income is lower than your 2019 earned income and doing so results in a larger credit. You still have to use your 2020 Adjusted Gross Income when filing your 2020 tax return; there is no option to use 2019 AGI when figuring your 2020 tax.
For the EIC, you’ll also have the option to use your 2019 earned income for your 2021 return.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
