The perfect tender rule refers to the legal right for a buyer of goods to insist upon "perfect tender" by the seller. In a contract for the sale of goods, if the goods fail to conform exactly to the description in the contract (whether as to quality, quantity or manner of delivery) the buyer may reject the goods. (UCC 2-601.) The buyer does not have an unfettered ability to reject tender.

This rule has been retained by the Uniform Commercial Code

Uniform Commercial Code

The Uniform Commercial Code , first published in 1952, is one of a number of uniform acts that have been promulgated in conjunction with efforts to harmonize the law of sales and other commercial transactions in all 50 states within the United States of America.The goal of harmonizing state law is...

, ordinarily superseding over claims of substantial performance

Substantial performance

At common law, substantial performance is an alternative principle to the perfect tender rule. This principle is relevant when a contractor's performance is in some way deficient, through no willful act by the contractor, yet is so nearly equivalent that it would be unreasonable for the owner to...

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