Specifications

Appendix A. Check Reading
27
Figure A-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
3.67”
8.75”
1
2
3
4