There are regulations affecting international electronic funds transfers processed though the automated clearing house (ACH) network. A domestic ACH transaction is a direct deposit to, or withdrawal from, an account in a U.S. financial institution. An international ACH transaction (IAT) is a direct deposit to an account in a U.S. bank that automatically forwards the refund to an account in a foreign financial institution, or a withdrawal from a U.S. bank account that receives the funds for that transaction from a foreign account. The account owner will know when an international transfer account has been established for them.