We do not know whether the IRS will refer to 2019 tax information or 2020 tax information to issue your third stimulus payment.
This TurboTax Help states:
Do I need to do anything to get my stimulus check?
You don’t need to do anything to get your stimulus check. The IRS will determine eligibility based on your last tax return (either 2019 or 2020) and will likely send your payment to the bank account where your tax refund was deposited.
The IRS says that the only way to update your mailing address and banking information is by filing your 2020 Federal 1040 tax return. The IRS is making no portal available.
Follow the TurboTax COVID Tax Center and the IRS Economic Impact Payment Information Center as further updates are issued by the IRS.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
