Comerica Securities Online Routing Numbers

Your routing number is a 9-digit code that identifies Comerica Securities Online and the specific branch where your account was opened. Here are the easiest ways to find it:

1. On your checks — the routing number is the first set of 9 digits at the bottom left corner, before your account number.
2. Online banking — log into your Comerica Securities Online account and look for "routing number" in your account details or settings.
3. Bank statement — your monthly statement usually includes the routing number.
4. Call Comerica Securities Online — a representative can confirm your routing number over the phone.

A routing number (also called an ABA routing number or routing transit number) is used for:

• Deposit slips — identifies which bank to send the deposit to
• Direct deposit — your employer needs it to deposit your paycheck
• Wire transfers — required for sending and receiving domestic wires
• ACH payments — used for automatic bill payments and transfers
• Tax refunds — the IRS needs it for direct deposit of your refund

Large banks like Comerica Securities Online often have different routing numbers for different states or regions. Always verify you're using the correct routing number for your specific account.