Key takeaways

Plaintiffs have four years to file a lawsuit for breach of a written contract under Code of Civil Procedure section 337.

Lawsuits over oral contracts must be filed within two years under Code of Civil Procedure section 339.

The limitations clock begins running when the contract is breached, not when the agreement is signed.

Contracts for the sale of goods carry a four-year deadline under Commercial Code section 2725, which parties can reduce to one year but cannot extend.

The Core Deadlines for Contract Disputes

In California, the time allowed to file a lawsuit for a broken contract depends entirely on how the agreement was documented. A plaintiff pursuing a breach of a written contract must file their action within four years. If the agreement was oral, the plaintiff has only two years to bring the case to court. These hard deadlines dictate whether a party can recover damages or is permanently barred from seeking relief.

The official California Courts self-help guidance confirms these parameters, stating that a breach-of-written-contract claim must be brought within four years and a breach-of-oral-contract claim within two years. In both scenarios, the time is measured from the date the contract was broken. This framework establishes a strict timeline for civil litigation, forcing parties to act promptly when an agreement falls apart.

Why It Matters

Statutes of limitations serve as an absolute barrier to litigation once the specified time expires. They force plaintiffs to pursue claims while evidence remains available and memories remain intact. The distinction between written and oral contracts reflects the inherent reliability of the evidence. A written document provides a permanent record of the parties' intentions, obligations, and signatures. An oral agreement relies entirely on human memory, which degrades rapidly. By cutting the litigation window in half for oral contracts, the legislature reduces the risk that courts will have to reconstruct terms from contradictory, years-old recollections.

Failing to file a complaint before the statute of limitations expires results in the dismissal of the claim, regardless of the underlying merits. A plaintiff could have overwhelming evidence that a defendant breached an agreement and caused massive financial harm. However, if the complaint is filed after the statutory period ends, the court will not hear the case. This makes the precise calculation of the deadline a central component of any contract dispute. The deadlines provide defendants with certainty, ensuring they do not face the threat of litigation indefinitely for past transactions.

Who Should Care

For lawyers

Attorneys evaluating a potential breach of contract claim must immediately identify the applicable statute of limitations and determine the exact date of accrual. Miscalculating the deadline constitutes a primary source of legal malpractice claims. Counsel must carefully analyze the nature of the agreement to determine whether it falls under Code of Civil Procedure section 337 for written contracts or Code of Civil Procedure section 339 for oral contracts.

Lawlitigators must be precise when drafting complaints. A complaint that vaguely alleges a breach without specifying whether the contract was written or oral is subject to a demurrer. If the plaintiff admits the contract is oral but alleges a breach that occurred three years ago, the court will dismiss the claim at the pleading stage without ever reaching discovery. Lawyers must also watch for specific statutory exceptions. For example, Code of Civil Procedure section 339 expressly carves out exceptions for contracts governed by Commercial Code section 2725 and by subdivision 2 of Code of Civil Procedure section 337. When dealing with the sale of goods, attorneys must recognize that Commercial Code section 2725 allows parties to modify the limitations period by original agreement. The parties may reduce that period to not less than one year, though they may not extend it. Counsel must review the contract terms to ensure a shortened deadline does not trap an unwary client.

For consumers and business parties

Anyone entering into a business agreement, hiring a contractor, or purchasing goods needs to understand that legal rights have an expiration date. If the other party fails to perform their obligations, waiting too long to take formal legal action will destroy the right to recover damages.

Parties should always insist on written contracts. Beyond providing clear proof of the agreed-upon terms, a written contract provides a four-year window to resolve disputes, compared to the two-year window for oral agreements. When a dispute arises, parties must document the exact date the other side failed to perform. This date starts the countdown clock. Attempting to resolve a dispute informally through negotiation does not automatically pause the statute of limitations. Consumers must remain aware of the calendar while trying to work things out with a vendor or business partner. When dealing with contractors or service providers, consumers often rely on verbal assurances. If a contractor fails to finish a project, the homeowner has exactly two years from that failure to file a lawsuit. Sending demand letters or complaining to consumer protection agencies does not stop the two-year clock from running.

Legal Background: Written vs. Oral Contracts

The California legislature established distinct frameworks for different types of obligations. Code of Civil Procedure section 337 governs actions upon any contract, obligation, or liability founded upon an instrument in writing. This four-year statute of limitations also applies to book accounts and accounts stated in writing. The requirement that the obligation be "founded upon an instrument in writing" means the core terms of the agreement and the defendant's promise to perform must be ascertainable from the written document itself. By including book accounts and accounts stated in writing under the four-year umbrella, the legislature provided businesses with a reliable timeline for collecting debts documented in their financial ledgers.

Conversely, Code of Civil Procedure section 339 applies to an action upon a contract, obligation, or liability not founded upon an instrument of writing. This encompasses oral contracts, implied-in-fact contracts, and situations where an agreement exists but lacks the necessary written documentation to qualify under Section 337. The two-year period for oral contracts reflects a legislative preference for written agreements and a recognition that unwritten terms become increasingly difficult to prove as time passes. The phrasing of Section 339 operates as a negative definition, catching obligations that fail to meet the strict criteria of Section 337.

The statute also explicitly notes that its two-year limit applies except as otherwise provided by Commercial Code section 2725 or Code of Civil Procedure section 337. This creates a clear hierarchy for courts and practitioners. A court must first look to see if the contract involves the sale of goods or is founded on a writing. Only if it fails both tests does it fall into the two-year catch-all of Section 339.

The California legislature designed these statutes to balance the rights of plaintiffs to seek redress against the rights of defendants to be free from defending against ancient claims. When claims become stale, evidence is lost, witnesses move away or pass away, and memories fade. The two-year and four-year markers represent the legislature's judgment on the optimal timeframes for balancing these competing interests.

What the Courts and Legislature Did: Accrual and Goods

Determining which statute applies is only the first step. The second step requires determining when the clock starts running. The California Supreme Court addressed the timing of contract claims in Spear v. California State Auto. Assn. (1992) 2 Cal.4th 1035. The Court held that a contract cause of action does not accrue until the contract has been breached. Therefore, the limitations clock generally starts running at the time of the breach, rather than at the time the parties sign the agreement. Before a breach occurs, a plaintiff has suffered no legal injury and has no right to sue. The decision in Spear codified this logical necessity, ensuring that parties do not lose their right to sue before the other side actually fails to perform.

The legislature created a specific framework for contracts involving the sale of goods. Under Commercial Code section 2725, an action for breach of a contract for the sale of goods must be commenced within four years after the cause of action accrues. The statute explicitly states that a cause of action accrues when the breach occurs, regardless of the aggrieved party's lack of knowledge of the breach. This is a strict rule for buyers, as it explicitly rejects the discovery rule that applies in many other areas of civil law.

This strict accrual rule for the sale of goods contains specific provisions for warranty claims. For sale-of-goods warranty claims under Commercial Code section 2725, a breach of warranty generally occurs on tender of delivery. This means the four-year clock starts ticking the moment the goods are offered or delivered to the buyer, even if a defect remains hidden and is not discovered until years later. The statute provides one major exception. Where the warranty explicitly extends to future performance of the goods, and discovery of the breach must await the time of such performance, the cause of action accrues when the breach is or should have been discovered.

Furthermore, Commercial Code section 2725 grants parties the power to alter the statutory deadline through their original agreement. The parties may reduce the period of limitation to not less than one year, but they may not extend it beyond the four years. This displays a legislative intent to allow commercial parties to limit their exposure to future lawsuits, while preventing them from keeping liability open indefinitely.

How It May Be Applied

The intersection of these statutes creates specific analytical requirements for future litigation. When a plaintiff files a lawsuit, the defendant will scrutinize the complaint to determine the alleged date of breach. If the breach occurred outside the applicable two- or four-year window, the defendant will file a motion to dismiss based on the statute of limitations. When a defendant raises the statute of limitations as an affirmative defense, the burden often shifts to the plaintiff to prove that the lawsuit was filed in time. This requires plaintiffs to maintain meticulous records of when performance was due and when the failure to perform became evident.

Disputes frequently arise over the exact date a breach occurred. In cases involving ongoing obligations or installment payments, courts must determine whether a single breach triggered the statute of limitations for the entire contract, or whether each missed payment constitutes a separate breach with its own running clock. The holding in Spear v. California State Auto. Assn. (1992) 2 Cal.4th 1035 dictates that the analysis must focus squarely on the moment the specific contractual duty was violated.

The classification of the contract remains a heavily litigated issue. A plaintiff facing a blown two-year deadline will often attempt to characterize an exchange of emails, invoices, or receipts as an instrument in writing to access the four-year deadline under Code of Civil Procedure section 337. Courts will have to evaluate whether these disparate documents sufficiently capture the obligations to elevate the agreement from an oral contract governed by Code of Civil Procedure section 339 to a written one. For oral contracts under Section 339, proving the exact terms of the agreement and the exact date of breach presents a formidable evidentiary challenge. Without a written document, the parties will likely present conflicting testimony about what was promised and when it was supposed to happen.

For merchants and buyers, the application of Commercial Code section 2725 requires careful drafting and review. Sellers of goods often include clauses reducing the statute of limitations to one year to limit their long-term exposure to litigation. Buyers must read the fine print to understand that their window to sue for defective goods or failure to deliver may be significantly shorter than the standard four years. If a warranty does not explicitly guarantee future performance, the buyer must inspect the goods upon tender of delivery. The clock starts immediately upon tender, regardless of when the buyer actually discovers the defect.

Comparing the Deadlines

Contract Type	Statutory Deadline	Governing Authority	Accrual Trigger
Written Contract	Four years	Code of Civil Procedure section 337	Date the contract is breached
Oral Contract	Two years	Code of Civil Procedure section 339	Date the contract is breached
Sale of Goods	Four years (unless reduced by agreement to no less than 1 year)	Commercial Code section 2725	When breach occurs (often tender of delivery)

Plain-English Callout

The Bottom Line on Contract Deadlines If you make a deal with someone and they break their promise, the State of California gives you a strict time limit to file a lawsuit. If you have a written contract, you have four years from the date they broke the agreement to sue them. If your agreement was only spoken aloud (an oral contract), you have just two years. For buying and selling physical goods, the limit is also four years, but the clock usually starts the moment the goods are delivered, even if you do not realize they are defective until later. If you miss these deadlines, the court will throw out your case, no matter how much money you lost.

This article is general legal information and commentary about developments in California law. It is not legal advice, does not address your specific situation, and is not a substitute for advice from a licensed attorney. Reading this article and contacting us through this website do not create an attorney-client relationship.

Sources & authorities

Code of Civil Procedure section 337 — source
Code of Civil Procedure section 339 — source
Commercial Code section 2725 — source
Spear v. California State Auto. Assn. (1992) 2 Cal.4th 1035 — source

Track California breach of contract deadlines to protect claims

Key takeaways