We are still waiting for IRS guidance regarding the direct deposit information for the stimulus payments. We will have more information once the government finalizes the details. If the IRS does not use the same means for the stimulus check as for the tax refund, then they will mail the check to the address on the 2018 or 2019 tax return. In the meantime, you can visit the following links for the most recent updates:
IRS Coronavirus Tax Relief
TurboTax Corona Virus Tax Center Updates