2025 Session Last amended: 2004 session

§ 336.1-303 — Course of Performance, Course of Dealing, and Usage of Trade

Plain-Language Summary

How the parties have actually performed a contract, their history of past dealings, and customs in their industry all help interpret what the contract means. If these sources conflict, express contract terms control, then course of performance, then course of dealing, then trade usage.

Practical Notes
If there is a dispute about what your contract means, courts look at how you actually performed it, your past dealings, and industry customs to fill in the gaps.