H.R. 8075 authorizes the Treasury Secretary to direct the Federal Deposit Insurance Corporation and the National Credit Union Administration to create emergency guarantee programs that would fully protect non-interest-bearing checking and transaction accounts at banks and credit unions during severe banking crises. The programs would be triggered only when the Treasury Secretary, consulting with the President, determines that a banking stress event exists and that the guarantee program would prevent serious economic damage. Each program would run for up to six months, with a possible three-month extension if justified by the Treasury Secretary in a report to Congress, and any costs would be recovered through special assessments on participating financial institutions rather than taxpayer funding. Within 30 days of establishing a program, the Treasury Secretary must testify before Congress, and the Government Accountability Office must review the program within 90 days of its termination and report findings to Congress.