Duty to Defend: Eight Corners vs. Extrinsic Evidence

State Approaches to the Duty to Defend: Pleadings-Only Jurisdictions Versus Extrinsic-Evidence Jurisdictions

Texas applies the strictest version of the pleadings-based approach. GuideOne Elite Insurance Co. v. Fielder Road Baptist Church, 197 S.W.3d 305 (Tex. 2006) explained that "[u]nder the eight-corners or complaint-allegation rule, an insurer’s duty to defend is determined by the third-party plaintiff’s pleadings, considered in light of the policy provisions, without regard to the truth or falsity of those allegations," and that "[f]acts outside the pleadings, even those easily ascertained, are ordinarily not material to the determination and allegations against the insured are liberally construed in favor of coverage." The court declined to soften the rule for evidence bearing on both coverage and liability, stating that it "reject[ed] the use of overlapping evidence as an exception to the eight-corners rule because it poses a significant risk of undermining the insured’s ability to defend itself in the underlying litigation," and it likewise declined to adopt a true-facts exception for assertedly fraudulent pleadings on the record before it. A plaintiff’s "factual allegations that potentially support a covered claim" are all that is needed to invoke the duty to defend, while "the facts actually established in the underlying suit control the duty to indemnify."

Florida follows the same complaint-allegations rule. National Union Fire Insurance Co. v. Lenox Liquors, Inc., 358 So. 2d 533 (Fla. 1977) held that "[t]he allegations of the complaint govern the duty of the insurer to defend," reaffirming that "[a] liability insurance company has no duty to defend a suit where the complaint upon its face alleges a state of facts which fails to bring the case within the coverage of the policy" and that "the company is not required to defend if it would not be bound to indemnify the insured even though the plaintiff should prevail in his action." Because the underlying complaint alleged only an intentional assault falling outside the policy’s definition of "occurrence," the insurer owed no defense — without regard to a later stipulation that the case would have been tried on a negligence theory.

California anchors the opposite camp. Gray v. Zurich Insurance Co., 65 Cal. 2d 263 (Cal. 1966) held that "the carrier must defend a suit which potentially seeks damages within the coverage of the policy" and that an insurer "bears a duty to defend its insured whenever it ascertains facts which give rise to the potential of liability under the policy." Because "modern procedural rules focus on the facts of a case rather than the theory of recovery in the complaint, the duty to defend should be fixed by the facts which the insurer learns from the complaint, the insured, or other sources"; the insurer "cannot construct a formal fortress of the third party’s pleadings and retreat behind its walls." Montrose Chemical Corp. v. Superior Court, 6 Cal. 4th 287 (Cal. 1993) extended the principle in both directions, concluding "that evidence extrinsic to the underlying complaint can defeat as well as generate a defense duty," while allocating the burdens asymmetrically: "the insured need only show that the underlying claim may fall within policy coverage; the insurer must prove it cannot," so "an insurer will be required to defend a suit where the evidence suggests, but does not conclusively establish, that the loss is not covered."

New York permits extrinsic facts to create the duty but not to defeat it, and Texas has since adopted a narrow gap-filling exception of its own. Fitzpatrick v. American Honda Motor Co., 78 N.Y.2d 61 (N.Y. 1991) held that, "rather than mechanically applying only the ‘four corners of the complaint’ rule in these circumstances, the sounder approach is to require the insurer to provide a defense when it has actual knowledge of facts establishing a reasonable possibility of coverage," because "the insurer cannot use a third party’s pleadings as a shield to avoid its contractual duty to defend its insured"; the court added that the duty it recognized "does not depend upon, or even imply, a corollary duty to investigate." In Texas, Monroe Guaranty Insurance Co. v. BITCO General Insurance Corp., 640 S.W.3d 195 (Tex. 2022) held that when the underlying petition states a claim that could trigger the duty to defend but a gap in the pleading leaves the coverage question unresolved, "Texas law permits consideration of extrinsic evidence provided the evidence (1) goes solely to an issue of coverage and does not overlap with the merits of liability, (2) does not contradict facts alleged in the pleading, and (3) conclusively establishes the coverage fact to be proved." The eight-corners rule "remains the initial inquiry to be used to determine whether a duty to defend exists," and "extrinsic evidence may not be considered if there would remain a genuine issue of material fact as to the coverage fact to be proved"; applying those limits, the court concluded that in continuing-damage cases "evidence of the date of property damage overlaps with the merits" and therefore could not be considered.

The decisions divide the states along two questions: whether facts outside the pleadings can create the duty to defend, and whether they can defeat it. Texas and Florida answer no to both as a baseline — the duty rises or falls on a comparison of the complaint’s allegations with the policy, without regard to the truth of those allegations, and an insured whose pleaded case falls outside coverage receives no defense even where the actual facts would place the claim within it. California answers yes to both: the insurer must defend whenever facts learned from the complaint, the insured, or any other source reveal a potential for coverage, and it may defeat the duty only with undisputed extrinsic facts that conclusively eliminate that potential. New York occupies an intermediate position, obligating the insurer to defend on the basis of extrinsic facts it actually knows while declining to impose any corollary duty to investigate. Texas’s 2022 decision narrows the gap from the other direction, admitting extrinsic evidence only where the pleading is silent on a discrete coverage fact and the proffered evidence is conclusive, contradicts nothing in the pleading, and does not touch the merits of the underlying liability case.