A motion to bifurcate in California asks the trial court to split one trial into two or more separate phases so a threshold question gets decided first. Most often that threshold is liability, with damages held back for a second phase that only happens if the plaintiff wins the first. California Code of Civil Procedure Section 598 gives judges broad discretion to order this split when it will serve witness convenience, the ends of justice, or the economy and efficiency of the case.1California Legislative Information. California Code CCP – Section 598
How a Bifurcated Trial Actually Runs
Phase one focuses on a single threshold issue. The jury (or judge) hears only the evidence tied to that issue, then delivers a verdict. If the plaintiff loses, judgment is entered for the defendant and the case is over unless reversed on appeal. No phase two takes place.1California Legislative Information. California Code CCP – Section 598
If the plaintiff wins phase one, the remaining issues go to trial in phase two. Section 598 lets the court decide when phase two happens and whether it uses the same jury, a new jury, or the judge alone. Courts often try to keep the same jury for continuity, but scheduling sometimes makes that impossible. The final judgment covers the entire case as if it had been tried in one sitting; bifurcation changes the process, not the legal effect of the outcome.
What You Have to Show the Judge
Section 598 authorizes bifurcation when it will promote any one of three things: the convenience of witnesses, the ends of justice, or the economy and efficiency of handling the case. You only need to persuade the court on one.
Practical factors carry the argument. If splitting the issues would meaningfully shorten trial, cut down witness lists for phase one, or dispose of the case through a defense verdict on a threshold question, the motion has weight. If the issues are so intertwined that the same witnesses would testify twice and the same evidence would come in during both phases, judges tend to refuse. The real question is whether bifurcation makes the case more manageable or just creates two smaller trials in place of one.
The court can also order bifurcation on its own motion “at any time,” without waiting for a party to ask.1California Legislative Information. California Code CCP – Section 598 Appellate review is for abuse of discretion, so a bifurcation ruling will almost always stand unless it was clearly unreasonable.
Issues Courts Commonly Bifurcate
Liability and Damages
The classic split. The jury decides whether the defendant is legally responsible without hearing about medical bills, lost income, or the plaintiff’s suffering. This works best when liability is genuinely contested and the damages case is expensive to put on. A defense verdict in phase one ends everything.
Punitive Damages Are Mandatory on Request
Punitive damages work differently. Under Civil Code Section 3295(d), bifurcation is not discretionary; the court must exclude evidence of the defendant’s profits and financial condition until after the jury has found the defendant liable for actual damages and found malice, oppression, or fraud.2California Legislative Information. California Code CIV – Section 3295 Only then does the same jury hear financial evidence and set the punitive amount. If your case involves a punitive damages claim and you represent the defendant, you can require this split by asking for it.
Special Defenses Under Section 597
Threshold defenses that could end the case outright have their own track. Section 597 lets the court try defenses like the statute of limitations, a prior judgment, or another pending action on the same claim before anything else.3California Legislative Information. California Code CCP – Section 597 A ruling for the defendant on one of these defenses ends the case without touching the merits. Section 598 defers to Section 597 for these situations, so special defenses get priority when raised.
Equitable Issues Before Legal Ones
When a case mixes equitable claims (decided by the judge) with legal claims (decided by the jury), courts often try the equitable issues first. That order avoids the awkward situation where a jury verdict on overlapping facts collides with what the judge would have found, and it lets the judge’s factual findings guide the later jury trial.
Bifurcation in Divorce Cases
Family law uses bifurcation for a specific purpose that has no civil equivalent. Under Family Code Section 2337, either spouse can ask the court to terminate the marriage as an early, separate proceeding while property division, spousal support, custody, and everything else stays open for later.4California Legislative Information. California Family Code FAM 2337 People pursue this to remarry, to file taxes as a single person, or to move on while financial issues get worked out.
The procedure is different from a civil bifurcation motion. You must serve a preliminary declaration of disclosure with a completed schedule of assets and debts alongside the motion, unless it was already served or the parties agree in writing to defer it. The court can attach protective conditions on the non-moving spouse’s behalf, including keeping health insurance in place, indemnifying for tax consequences, and preserving retirement benefit rights.4California Legislative Information. California Family Code FAM 2337 The filing uses court form FL-315 rather than the general motion format.5Judicial Branch of California. California Rules of Court Rule 5.390 – Bifurcation of Issues The status judgment expressly reserves everything else for future proceedings, so ending the marriage does not resolve the disputes tied to it.
Who Actually Benefits
Bifurcation is not procedurally neutral. Splitting the trial usually shifts the dynamics in favor of one side, so it matters who is asking and why.
Defendants file these motions more often. Keeping damages evidence out of phase one strips the case of its emotional weight during the liability decision. Photos of injuries, testimony about pain, evidence of what the plaintiff has lost, all of that generates sympathy that can bleed into how a jury evaluates fault. A defendant with a strong liability defense benefits from a clinical, evidence-only version of phase one.
Plaintiffs generally prefer a unified trial. The full story is coherent; a liability case tried in a factual vacuum can feel abstract. Plaintiffs also carry the burden of preparing what amounts to two trials, with separate openings, examinations, and closings for each phase. That said, if a defendant has raised a weak affirmative defense that is dragging out the case, a plaintiff might want that defense tried first and disposed of quickly.
Filing the Motion and the Deadline That Trips People Up
The motion follows standard civil pretrial procedure: a notice of motion, a memorandum of points and authorities explaining why bifurcation meets the statutory standard, and supporting declarations laying out the factual basis. Good declarations quantify what bifurcation would save, how many witnesses would drop out of phase one, how independent the issues really are, and what the estimated savings look like.
Two timing rules apply. Under general motion practice, the motion has to be filed and served at least 16 court days before the hearing, with extra time for service by mail. Separately, Section 598 requires the court’s order itself to be entered no later than the close of the pretrial conference, or if there is no pretrial conference, no later than 30 days before trial.1California Legislative Information. California Code CCP – Section 598 So the motion must be filed early enough that both the hearing and the order fit inside that window. Waiting too long is a common way to lose a motion that would have won on the merits.
The opposing party can respond by arguing the issues overlap too much for a clean split, that bifurcation would not actually save time, or that separating the phases would cause prejudice. The judge weighs both sides at the hearing.
What Happens After Phase One
A defense verdict on the threshold issue ends the case. Judgment is entered for the defendant, and no phase two takes place unless the judgment is reversed on appeal.1California Legislative Information. California Code CCP – Section 598
If phase one goes against the defendant, the remaining issues proceed. The court sets the timing and decides whether the same jury continues or a new one is impaneled, with Section 598 giving discretion to order phase two “at such time” and before “the same or another jury” as circumstances require.1California Legislative Information. California Code CCP – Section 598
If Your Case Is in Federal Court
Cases filed in federal court in California use Federal Rule of Civil Procedure 42(b), which allows separate trials “for convenience, to avoid prejudice, or to expedite and economize.”6Legal Information Institute. Rule 42 – Consolidation; Separate Trials The standard reads similarly to California’s, but federal judges must also preserve the parties’ Seventh Amendment jury trial right, which limits how the phases can be structured when overlapping fact issues run between them. The practical showing is the same: real savings or real prejudice avoided, not just a rearrangement of the same work.