Starting this thread to keep track of U.S. state issued number formats for businesses.
California tax exempt number XXX-XXXXXX 123-456789 For older accounts with 8 digits (i.e., 99-123456) prepend 0 0XX-XXXXXX 012-345678 Note: Some permits have letter designators. ex: SR EH 99-123456 For verification purposes, ignore letters - they are state internal-use designators only.
