As you can see, the bank letter example above has all of the required components (date, name of bank, account name, account number, routing number). You must include the financial institution nine- digit routing numberfor each account.To access your routing number, select Routing numbers directly below the account name and after the account number. You can find your ABA routing number and your Bank of America account number in Online Banking or on the mobile app. Want us to walk you through it? 072407741 is a routing number used for BANK MICHIGAN in MI. This routing number supports ACH and Wire transfers. Refer to your deposit slip for routing number and complete savings account number, or contact your financial institution for this information. Your BANK MICHIGAN routing number can be found at the bottom left corner of a check. Direct deposit into a personal checking or savings account; or Direct deposit to a child support debit card. Write the number in the bank routing box on the front of this form.