California Business Contracts | California Legal Guide

Contracts govern almost every part of running a business — hiring vendors, leasing space, selling goods, partnering with others, and protecting confidential information. California has a well-developed body of contract law that determines when an agreement is binding, which agreements must be in writing, what counts as a breach, and how long you have to sue. California is also unusual in one important respect: it bans most non-compete agreements outright. This guide explains how business contracts work under California law, with current statutes and citations.

This guide provides general information about California law and is not legal advice. Contract disputes turn on specific facts and exact wording, and the law evolves. For advice you can rely on, consult an attorney licensed by the State Bar of California.

What makes a contract valid in California

Under California Civil Code § 1550, a contract requires four essential elements: parties capable of contracting, their mutual consent, a lawful object, and sufficient consideration (something of value exchanged). Mutual consent is usually formed through an offer and an acceptance. Most contracts can be formed orally or even through conduct — a handshake deal can be fully enforceable in California — but proving the terms of an oral agreement is far harder, which is one practical reason to put business deals in writing.

A few related concepts shape whether a contract is valid and enforceable. Consideration means each side must give or promise something of value; a one-sided promise to make a gift is generally not an enforceable contract. Capacity means the parties must be legally able to contract — minors and some incapacitated persons cannot, and on the business side, the person signing must have authority to bind the entity. The contract's object must be lawful: an agreement to do something illegal is void. And consent must be genuine — a contract induced by fraud, duress, undue influence, or a mutual mistake can be rescinded under Civil Code §§ 1565-1567 and 1689. Understanding these basics helps explain why some agreements that look binding are not, and why others that seem informal are fully enforceable.

The statute of frauds: contracts that must be written

California's statute of frauds, codified at Civil Code § 1624, lists categories of contracts that are unenforceable unless they are in writing and signed by the party to be charged. These include, among others:

An agreement that by its terms cannot be performed within one year of its making.
An agreement for the sale of real property, or an interest in real property, or a lease of real property for more than one year.
A promise to answer for the debt or default of another (a guaranty).
An agreement that by its terms is not to be performed during the lifetime of the promisor.
A contract, promise, or commitment to loan money or extend credit in an amount greater than $100,000, made by a person engaged in the business of lending.

Separately, contracts for the sale of goods of $500 or more are governed by California's version of the Uniform Commercial Code (Com. Code § 2201), which has its own writing requirement. When the statute of frauds applies and there is no signed writing, the contract may be unenforceable — though doctrines such as part performance or promissory estoppel can sometimes provide an exception.

California's non-compete ban — and the 2024 changes

California treats employee non-compete agreements very differently from most jurisdictions. Under Bus. & Prof. Code § 16600, every contract that restrains anyone from engaging in a lawful profession, trade, or business is void, except in a few narrow statutory situations. California courts have applied this broadly, refusing to enforce non-competes against departing employees.

Two 2024 laws sharpened the ban:

SB 699 added § 16600.5, which makes a void non-compete unenforceable regardless of where or when it was signed — even if the employer is located in another state — and creates a private right of action with remedies including injunctive relief, actual damages, and attorney's fees for a prevailing employee.
AB 1076 added § 16600.1, which makes it unlawful to include a void non-compete in an employment contract or to require an employee to sign one, and required employers to notify affected current and former employees (a notice deadline of February 14, 2024 applied) that their non-competes are void.

There are limited exceptions to the § 16600 ban — most notably the sale-of-business-goodwill exception in § 16601, discussed in our guide to buying and selling a business in California. To protect competitive information without a non-compete, California businesses generally rely on confidentiality agreements and trade-secret law (Civ. Code § 3426 et seq.).

Key clauses every California business contract should consider

Beyond the core deal terms — who, what, when, and for how much — a well-built California business contract usually includes a set of standard provisions that determine what happens if something goes wrong. These clauses are easy to overlook precisely because they only matter in a dispute, but that is exactly when they prove their value:

Parties and authority. Use the exact legal name of each entity and confirm that the signer has authority to bind it.
Scope and deliverables. Define precisely what is being provided, by when, and to what standard, so "substantial performance" disputes are less likely.
Payment terms. State the price, due dates, late charges, and conditions for payment.
Default and cure. Define what counts as a breach and whether the breaching party gets a chance to fix it before the other side can terminate or sue.
Term and termination. Say how long the contract lasts and how either side can end it.
Confidentiality. Because California voids most non-competes, confidentiality and trade-secret protections are the primary lawful way to guard sensitive information.
Indemnification and limitation of liability. Allocate who bears the risk of third-party claims and cap exposure where appropriate.
Dispute resolution. Choose governing law (California), venue, and whether disputes go to arbitration or court.
Attorney's fees. A fees clause shifts the cost of enforcement, and under Civil Code § 1717 California makes such a clause reciprocal so the prevailing party recovers fees even if it was drafted to favor only one side.
Entire agreement and amendment. Confirm that the writing is the complete deal and specify that changes must be in a signed writing.

Not every contract needs every clause, and overloading a simple agreement can be as harmful as omitting protections. The goal is to match the provisions to the stakes — a small one-time purchase needs far less than a multi-year supply agreement — and to make sure the clauses are internally consistent so they do not contradict one another in a dispute.

Breach of contract and remedies

A breach occurs when a party fails to perform a contractual duty without a legal excuse. To win a breach-of-contract claim in California, a plaintiff generally must prove the existence of a contract, the plaintiff's own performance or excuse for nonperformance, the defendant's breach, and resulting damages. Available remedies include:

Compensatory (expectation) damages — money to put the non-breaching party in the position it would have occupied had the contract been performed.
Consequential damages — foreseeable losses flowing from the breach.
Specific performance — a court order to perform, available when money is inadequate, such as in unique real-property deals.
Rescission and restitution — unwinding the contract and returning what was exchanged.
Liquidated damages — a pre-agreed amount, enforceable in California only if it meets the reasonableness standards of Civil Code § 1671.

California generally does not allow punitive damages for an ordinary breach of contract; they are reserved for separate torts such as fraud. California also imposes a duty to mitigate: a non-breaching party generally cannot recover losses it could have reasonably avoided. And contract law in California carries an implied covenant of good faith and fair dealing in every agreement, meaning neither party may do anything to deprive the other of the benefits of the bargain.

Before suing, parties often look to the contract itself for self-help remedies. Many California business contracts include a cure period (a chance to fix a default), an attorney's fees clause (which, under Civil Code § 1717, California makes reciprocal so that whichever party prevails can recover fees even if the clause favored only one side), and a notice provision dictating how a breach must be communicated. Reading and following these provisions is often the difference between preserving a claim and inadvertently waiving it.

A worked example shows how the remedies fit together. Suppose a California manufacturer contracts to buy a custom machine for $200,000, pays a $50,000 deposit, and the seller never delivers. The buyer's expectation damages aim to put it where performance would have — so if the buyer must pay $230,000 to buy a comparable machine elsewhere, its direct damage is roughly the $30,000 difference, plus return of the deposit through restitution. If the delay also forced the buyer to idle a production line and lose a foreseeable customer order, those losses may be recoverable as consequential damages, provided they were foreseeable when the contract was made and the buyer took reasonable steps to mitigate — for instance, by sourcing a substitute machine promptly rather than letting losses pile up. The buyer generally could not recover punitive damages for this plain breach, but if the seller had taken the deposit through deliberate fraud, a separate fraud claim could open the door to them. This is the practical logic behind California contract remedies: compensate the injured party for the benefit of the bargain, require reasonable steps to limit the harm, and reserve punishment for genuine wrongdoing.

Electronic signatures and online contracts

Most California business contracts today are signed electronically, and California law treats a valid electronic signature as the equal of a handwritten one. The Uniform Electronic Transactions Act (UETA), codified at Civil Code § 1633.1 and following, provides that a record or signature may not be denied legal effect simply because it is in electronic form, and that an electronic signature satisfies a law requiring a signature so long as the parties have agreed to transact electronically. The federal E-Sign Act reinforces this for transactions affecting interstate commerce. In practice, this means a contract concluded by typing a name into a signing platform, clicking "I agree," or exchanging signed PDFs can be just as binding as one signed in ink.

There are limits worth knowing. UETA applies only when the parties have agreed to conduct the transaction electronically, and that agreement can be inferred from the circumstances. Certain documents are excluded from UETA's reach and may still require traditional formalities, so high-stakes or specialized documents should be confirmed with counsel rather than assumed to be covered. For online "clickwrap" and "browsewrap" terms, enforceability turns on whether the user had reasonable notice of the terms and manifested assent — courts are more skeptical of terms buried in a link that the user never had to acknowledge. Businesses that rely on online agreements should design their signup flows so that assent is clear and the terms are conspicuously presented.

Statutes of limitation for contract claims

How long you have to sue depends on the type of contract:

Written contracts: four years from the breach, under Code of Civil Procedure § 337.
Oral contracts: two years from the breach, under Code of Civil Procedure § 339.

The clock usually starts when the breach occurs, but under the delayed-discovery rule it may start later if the injured party could not reasonably have discovered the breach. Because missing the deadline can permanently bar a claim, anyone weighing a contract dispute should act promptly and confirm the applicable period with a lawyer.

Steps to a stronger California business contract

Put it in writing. Even when the statute of frauds does not require it, a signed writing prevents disputes about terms.
Identify the parties precisely. Use exact legal names of entities and confirm signing authority.
Spell out the deal terms. Price, scope, deadlines, deliverables, and payment terms should be clear and complete.
Address default and remedies. Define what counts as a breach, any cure period, and the consequences.
Avoid void clauses. Do not rely on an employee non-compete; use lawful confidentiality and trade-secret protections instead.
Choose dispute-resolution terms. Decide on governing law (California), venue, and whether disputes go to arbitration or court.
Have counsel review high-stakes agreements. A California attorney can catch unenforceable terms and missing protections before they cause problems.

Frequently asked questions

Is a verbal business agreement enforceable in California?

Often, yes. Many oral contracts are valid and enforceable in California. But agreements that fall under the statute of frauds (Civ. Code § 1624) must be written and signed, and oral contracts carry a shorter two-year limitations period (CCP § 339) and are harder to prove. Putting agreements in writing is almost always the safer course.

Can my company enforce a non-compete against a former employee?

Almost never. California voids most employee non-competes under Bus. & Prof. Code § 16600, and the 2024 laws (§§ 16600.1 and 16600.5) make them unlawful and expose employers to penalties and lawsuits. Businesses generally protect themselves through confidentiality agreements and trade-secret law instead.

How long do I have to sue for breach of contract?

Generally four years for a written contract (CCP § 337) and two years for an oral contract (CCP § 339), usually measured from the date of the breach. The delayed-discovery rule can change the start date, so confirm the deadline with an attorney before assuming a claim is too late.

Are liquidated-damages clauses valid in California?

They can be. Under Civil Code § 1671, a liquidated-damages provision in most contracts is valid unless the party challenging it proves the amount was unreasonable under the circumstances when the contract was made. A clause that operates as a penalty rather than a genuine estimate of likely harm may be unenforceable.

Can I recover my attorney's fees if I win a contract case?

Often only if the contract says so. The default American rule is that each side pays its own fees. But if a California contract contains an attorney's fees clause, Civil Code § 1717 makes it reciprocal, so the prevailing party can recover reasonable fees — even if the clause was written to benefit only one party. This is why fee provisions are worth negotiating carefully.

What if the contract was signed because of a lie?

A contract induced by fraud, duress, or undue influence is voidable and can be rescinded, with the parties restored to their prior positions. Fraud can also support a separate tort claim for damages, including potential punitive damages. These claims have their own deadlines — generally three years from discovery for fraud (CCP § 338(d)) — so prompt action matters.

Is an electronically signed contract binding in California?

Generally yes. Under California's Uniform Electronic Transactions Act (Civ. Code § 1633.1 et seq.) and the federal E-Sign Act, an electronic signature carries the same legal effect as a handwritten one when the parties have agreed to transact electronically. A contract signed through an e-signature platform or by exchanging signed PDFs is usually fully enforceable. Some specialized documents are excluded, so confirm with an attorney for unusual or high-stakes agreements.

Can I get out of a contract if circumstances change?

Usually not just because performance became harder or less profitable. California enforces contracts as written, and a party that simply finds the deal inconvenient generally remains bound. Narrow doctrines such as impossibility, impracticability, or frustration of purpose can excuse performance when an unforeseen event makes it genuinely impossible or destroys the contract's basic purpose, but they are applied cautiously. The cleaner solution is often a negotiated amendment or termination — ideally using any termination clause the contract already contains.

Find a California business attorney

A carefully drafted contract prevents disputes; a poorly drafted one invites them. For the bigger picture, see the business law hero guide, and if a deal has already gone wrong, read about business disputes and litigation in California. When you need tailored help drafting or enforcing an agreement, our directory lists attorneys licensed by the State Bar of California across all 58 counties — free to search, with no obligation.