The tax return is equipped to handle the stimulus recovery when you have not received what you are entitled to.
A worksheet will be completed with your return. The Recovery Rebate Credit will cover both the first and second stimulus payments. This will determine the full amount of potential refund you are entitled to based on income and eligible dependents, and will be part of the final combined refund on your return, if applicable. It will increase a refund or reduce an amount due.
As noted, if you file a return and someone else has claimed you as a dependent on a return that has already been filed, and they were not entitled to, then the IRS will accept the first return that reaches their systems. If this does happen and your return is rejected, you will mail your tax return with the correct information.
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