In an extraordinary action to restore confidence in America’s banking system, the Biden administration on Sunday guaranteed that customers of the failed Silicon Valley Bank will have access to all their money starting Monday.

In a related action, the government shut down Signature Bank, a regional bank that was teetering on the brink of collapse in recent days. Signature’s customers will receive a similar deal, ensuring that even uninsured deposits will be returned to them Monday.

In a joint statement Sunday, Treasury Secretary Janet Yellen, Federal Reserve Chair Jerome Powell and Federal Deposit Insurance Corporation Chairman Martin J. Gruenberg said the FDIC will make SVB and Signature’s customers whole. By guaranteeing all deposits – even the uninsured money that customers kept with the failed banks – the government aimed to prevent more bank runs and to help companies that deposited large sums with the banks to continue to make payroll and fund their operations.