If you did not receive the correct amount of stimulus payments/ Recovery Rebate Credit then you will have to file an amended return 1040X to claim the Recovery Rebate credit for your dependent. Make sure your dependent is entered correctly and the box under the SSN is not accidently checked.
Please be aware that you can e-file your 2020 amended federal tax return. Form 1040X is not ready yet, please see FAQ How to amend a tax return for instructions and updates.
Please see Where's My Amended Return? to check the status of your amended return.
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