How can you claim money back from a bank that is no longer in use?

To claim money back from a bank that is no longer in use, first check if the bank has been absorbed by another institution or if it has gone into receivership. Contact the regulatory authority or deposit insurance agency in your country, such as the FDIC in the U.S., for guidance on your claim process. Gather your account information and any relevant documentation to support your claim. Follow the instructions provided by the regulatory body to submit your request for reimbursement.