• A transit routing number is a nine-digit number used to identify a bank or financial institution when settling funds or processing checks.

  • In 1910, the American Bankers Association (ABA) established transit route numbers.
  • These numbers are also used in online banking and clearinghouses for financial transactions.
  • Routing transit numbers are often used when setting up a bank transfer or direct deposit.
  • While SWIFT or IBAN numbers are used for international transactions, routing numbers are often required for domestic transfers.