Trusted AI built on 175 years of Thomson Reuters knowledge. Meet The CoCo

Implied Duty of Good Faith and Fair Dealing

by Practical Law Commercial Transactions

Maintained | USA (National/Federal)

A Practice Note discussing the implied duty of good faith and fair dealing in US commercial agreements. This Practice Note outlines the scope of the implied duty, how it arises, and the significant variations in its application across different state jurisdictions. It explains how courts use the implied duty to address unforeseen issues by preventing one party from frustrating the other party's rights to the benefits of the contract. The guidance details how breaches of the implied duty are determined and explores whether a breach can be a standalone claim. This Practice Note also distinguishes the implied duty from other obligations, such as best efforts and fiduciary duties, and examines its specific implications in special contractual relationships, including insurance contracts, government contracts, and contracts for the sale of goods governed by the Uniform Commercial Code (UCC).

Get access to this document with Practical Law

Why Practical Law?

Gain a built-in attorney network

Practical Law’s resources are written and maintained by over 650 dedicated, full-time attorney-editors globally. They’re highly qualified, having practiced at the world’s leading law firms, corporate law departments, and government agencies, so they understand the challenges you face. They dedicate themselves to creating resources to help you navigate the new legal realities, legislative changes, and practice areas impacting your clients or organization.

See how to leverage the expertise of Practical Law’s attorney-editors to help you practice more efficiently.

Expert guidance

650+ full-time, experienced attorney-editors keep you up to date globally

Total resources

118,000+ total resources across 17 practice areas ensure comprehensive coverage

Timely updates 

150,000+ hours spent in 2025 maintaining and updating resources

Experience Practical Law