Breach of contract: what you need to show

A breach of contract claim generally asks four questions: was there a valid contract, did you do your part (or have a valid excuse for not doing it), did the other side fail to do theirs, and were you harmed as a result? Each is something you usually prove with everyday records — the agreement itself, messages, receipts, and invoices. The precise elements and available remedies are set by each state’s law, so treat the framework below as an orientation rather than a universal rule.

First, a contract that can be enforced

Before there can be a breach, there has to be a binding contract. California’s court self-help guidance describes a contract as an agreement — written, spoken, or implied from the situation — in which each side agrees to do, not do, or pay something. To be enforceable it generally needs a mutual agreement on the essential terms, an offer and acceptance, an exchange of something of value, parties who have the capacity to agree, and a lawful purpose. Some contracts, such as those for real estate or that cannot be performed within a year, must be in writing.

Then the breach and its elements

Breach happens when a party to a valid contract fails to do what it agreed to do. Courts often break a claim into elements: a contract, the plaintiff’s own performance or a legally recognized excuse for non-performance, the defendant’s breach, and resulting harm. Framing this as “four elements” is a useful shorthand, but the number and wording differ by state, and causation — the link between the breach and the harm — is frequently contested.

The other side may have defenses: that it actually performed, that you breached first or made performance impossible, that the deal was too indefinite to enforce, or that the contract had to be in writing. These are fact-specific, and a defense that wins in one situation may fail in another.

Harm and remedies

Contract law generally tries to put the non-breaching party in the position it would have been in if the contract had been performed — sometimes called the benefit of the bargain. What you can actually recover depends on the losses you can prove and on limits the law places on the types and amounts of damages. There is no single formula, and not every disappointment is a recoverable loss.

Evidence checklist

• The agreement. The signed contract, or messages and documents showing a verbal or implied one.
• Your performance. Proof you did your part — payments, deliveries, or readiness to perform.
• The breach. What the other side failed to do, and when.
• The harm. Receipts, invoices, and records tying your losses to the breach.
• The deadline. Check the statute of limitations in your state before you rely on any timeframe.

Deadlines vary — do not assume one

Breach-of-contract claims are subject to filing deadlines (statutes of limitations). As one labeled example, California generally allows four years to sue on a written contract and two years on an oral one, measured from the breach — but other states differ, and exceptions can shorten or extend the time. Do not treat any single period as universal.

This is general legal information for consumers and small businesses, not legal advice, and it does not create a lawyer–client relationship; the elements, defenses, remedies, and deadlines depend on your state and facts, so consult a lawyer licensed where your dispute arises.