Once a tax return has been filed the bank information cannot be changed.
When you file the 2020 federal tax return you can enter the bank routing and account number for a direct deposit of a federal tax refund in the File section of the TurboTax program.
Go to this IRS website for stimulus information - https://www.irs.gov/newsroom/treasury-and-irs-begin-delivering-second-round-of-economic-impact-payme...
