The Uniform Commercial Code (UCC), Articles 3 and 4 first published in 1952, is a set of standardized state laws that govern business and financial contracts that establishes general duty standards for parties to act in good faith and exercise ordinary care in their transactions across the United States of America (U.S.) through UCC adoption by all 50 states, the District of Columbia, and the Territories of the United States. Together with case law, Articles 3 and 4 document legal boundaries for most aspects of check processing.

This Quick Reference Card outlines the key topics in the UCC Articles 3 and 4 with a brief description of each and the location of the UCC Reference. Together with case law, Articles 3 and 4 document legal boundaries for most aspects of check processing.