For individuals who filed a 2019 tax return and had direct deposit to a checking account you don’t have to do anything. If you have not filed a 2019 the IRS will use information for your 2018 tax return if you provided your banking information for payment or a refund. For those who were not required to file they will have a portal you can complete and submit to get your stimulus money quicker. They will also have a simple return that can be submitted. At the moment neither of those options are ready. Here is a link for individuals to get the most current information.
Business information is available here.