The routing number must be 9 digits. The first two digits must be 01 through 12 or 21 through 32. If your check states that it is payable through a bank different from the financial institution at which you have your checking account, contact your financial institution for the correct routing number to enter on the tax return.
A sample check displaying where the account number and routing number appear on a check can be viewed in the instructions of the 104 individual income tax booklet.
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