A bank routing number is a nine-digit number, also called an ABA routing number or routing transit number, and is used by US financial institutions to send and receive electronic transactions between banks. Use our 022000020 Automated Clearing House (ACH) routing number for transactions such as: Direct deposit of your paycheck from your employer directly into your HSBC account Recurring transfers or payments from your HSBC account to pay monthly bills like utilities, tuition or cable Pay friends and family through popular online payment apps.