A tolling agreement in California is a written contract in which the parties to a potential lawsuit agree to pause the statute of limitations, giving them more time to investigate the facts or negotiate a resolution without the pressure of a filing deadline. Code of Civil Procedure Section 360.5 governs these contracts, caps each waiver at four years, and allows the parties to renew it in four-year increments for as long as they both agree.1California Legislative Information. California Code CCP – Section 360.5 You see them most often in construction defect disputes, business contract fights, and insurance coverage disagreements where sorting out the facts takes time.
Why Parties Sign One
Filing a lawsuit is expensive, and once a complaint is on file, the relationship between the parties hardens. A tolling agreement lets both sides step back. The potential plaintiff keeps the right to sue later. The potential defendant avoids the immediate cost of defending active litigation.
The usual trigger is an investigation that is not finished. A homeowner who finds cracks in a foundation needs an engineer to figure out whether the builder or the soil caused them. A business that suspects a partner of skimming revenue needs an accountant to trace the money. Neither side benefits from racing to court before the facts are clear, but the statute of limitations keeps running regardless. Pausing it buys everyone room to work.
Signing a tolling agreement is not an admission of fault. The potential defendant does not concede liability by agreeing to pause the clock. Both sides preserve every legal defense they had before, with one narrow exception: the defendant gives up the right to argue that the statute of limitations ran out during the tolling period.
What California Law Requires
Section 360.5 sets two hard rules. The waiver has to be in writing, and it has to be signed by the person whose obligation is at stake.1California Legislative Information. California Code CCP – Section 360.5 An oral deal to pause the clock is worth nothing in court, no matter how clearly both sides understood it.
Beyond those minimums, a well-drafted agreement should cover a few more points so a dispute about the agreement itself doesn’t erupt later. Full legal names of every individual and entity involved, because the agreement only binds who signs it. A specific description of the claims being tolled, since vague language like “all disputes between the parties” invites a fight over scope. Fixed start and end dates on the calendar, which is cleaner than a running term that ends on written notice. Explicit language preserving every defense other than the statute of limitations during the tolling period. And a clause requiring both sides to preserve relevant documents and evidence while the clock is stopped.
The Four-Year Cap and Renewals
California does not allow the parties to pause a deadline forever in a single document. A waiver signed before the original statute of limitations has run can extend the deadline by up to four years from the date it would have expired. A waiver signed after the deadline has already passed is effective for up to four years from the date the waiver itself is signed.1California Legislative Information. California Code CCP – Section 360.5
The statute expressly permits successive renewals. When a four-year waiver is about to run out, the parties can sign another one for another four years, and they can keep doing that as long as both agree.1California Legislative Information. California Code CCP – Section 360.5 In complex matters like environmental contamination claims or multi-party construction disputes, tolling can stay alive for a decade or more through serial renewals.
One detail trips people up. The four-year window is measured from the expiration of the original statute of limitations, not from the date the tolling agreement is signed. If a two-year personal injury deadline would have expired on March 1, 2026, a tolling agreement signed six months earlier cannot push the deadline past March 1, 2030.
What Happens When the Agreement Ends
When tolling ends, whether by expiration or termination, the statute of limitations picks up exactly where it left off. The days that passed under the agreement do not count against the deadline. If you had eight months left to file when tolling began, you have eight months once it ends.
That is where plaintiffs most often get burned. If you lose track of how much time was left before the pause started, you can miss your filing window after it lifts. Calculate the remaining time before you sign anything, write it down, and calendar the new deadline the moment the agreement terminates.
The Agreement Only Binds the People Who Sign
A tolling agreement is a private contract, and like any contract, it only binds the signers. If a dispute involves several potential defendants and only one signs, the statute of limitations keeps running against everyone else.
California courts have enforced this point strictly, including in cases under the California Environmental Quality Act, where a court invalidated a tolling agreement that did not include a necessary party. The lesson carries across every type of claim. Every party whose liability might come into play needs to be in the agreement, or the deadline will quietly expire against the ones left out.
The same logic applies to indemnity and contribution claims among defendants. If you are a defendant who might need to cross-claim against a co-defendant, a tolling agreement between you and the plaintiff does nothing for the deadline on that cross-claim. You need a separate agreement with the co-defendant, or you need to file before the clock runs.
The Deadline a Tolling Agreement Cannot Pause
California has one hard stop that catches people off guard in construction cases. Under Code of Civil Procedure Section 337.15, no one can bring a claim for latent defects in the construction or design of a building more than ten years after substantial completion of the work.2California Legislative Information. California Code CCP – Section 337.15 A latent defect is one that would not be found by a reasonable inspection.
This is a statute of repose, not a statute of limitations. It runs from a fixed event, substantial completion, regardless of when anyone discovers the problem. The statute says nothing in its provisions should be read as extending any filing deadline prescribed by California law. A private tolling agreement between a homeowner and a contractor cannot push a construction defect claim past the ten-year window. The only carved-out exceptions are claims based on willful misconduct or fraudulent concealment by the builder.2California Legislative Information. California Code CCP – Section 337.15
Tolling Agreements Versus Equitable Tolling
These two things are often confused. A tolling agreement is a voluntary, negotiated pause between the parties. Equitable tolling is a court-ordered pause, applied when fairness requires it. The California Supreme Court has described equitable tolling as a judicial doctrine that suspends or extends a filing deadline to ensure fundamental fairness, applied only in special situations.3California Supreme Court. California Supreme Court Opinion S249132
Courts weigh three factors in deciding whether to apply equitable tolling: whether the defendant had timely notice of the claim, whether the defendant would be prejudiced by the delay, and whether the plaintiff acted reasonably and in good faith.3California Supreme Court. California Supreme Court Opinion S249132 The plaintiff’s conduct has to be both objectively reasonable and subjectively in good faith.
Equitable tolling is a safety valve, not a strategy. If you have the chance to negotiate a tolling agreement, take it. Do not count on a court granting equitable tolling as a backup.
Practical Pitfalls to Watch For
The biggest risk is a false sense of security. The agreement pauses one specific deadline against one specific set of parties. Everything else keeps moving. Related claims against third parties, administrative deadlines, insurance notice requirements, and contractual arbitration triggers all keep running unless the agreement specifically addresses them.
Scope ambiguity is the next trap. If the agreement covers “claims arising from the construction project” and the plaintiff later brings a fraud claim based on the same facts, the defendant will argue fraud was not a construction claim. The more precisely the agreement describes the covered claims, the less room there is for that fight.
Watch the termination mechanics. Many agreements let either side end the tolling period by written notice, often with 30 or 60 days of lead time. If you are the plaintiff and you receive that notice, the notice period plus whatever time remained on your original statute of limitations is all you have. Missing the deadline after months of good-faith negotiations is a devastating and entirely avoidable mistake.