Owner's manual

Appendix B. MICR Check Reading
51
Figure B-2. Business Checks
MICR FIELDS
The numbers 1 through 4 refer to the numbers below the checks on the illustration and represent
the 4 MICR fields.
1-Transit Field
The Transit field is a 9-digit field bracketed by two Transit symbols. The field is subdivided as
follows:
• Digits 1-4 Federal Reserve Routing Number
• Digits 5-8 Bank ID Number (American Banking Association)
• Digit 9 Check Digit
2-On-Us Field
The On-Us field is variable, up to 19 characters (including symbols). Valid characters are digits,
spaces, dashes, and On-Us symbols. The On-Us field contains the account number and may also
contain a serial number (Check number) and/or a transaction code. Note that an On-Us symbol
must always appear to the right of the account number.
3.67”
8.75”
1
2
3
4