Also known as: business judgment rule · business judgement rule · BJR
The business judgment rule is a corporate-law doctrine that presumes directors and officers made a decision on an informed basis, in good faith, and in the honest belief that it served the company's best interests, so courts will not second-guess that decision just because it turned out badly.
The business judgment rule is a long-standing corporate-law principle, most closely associated with Delaware courts, that protects directors and officers from being held personally liable for honest business decisions that later go wrong. It works as a rebuttable presumption: courts assume the board acted on an informed basis, in good faith, and in the honest belief the decision was in the company's best interest, so a judge will not substitute their own view for the board's. The key point for a founder or CFO is that the rule protects the decision-making process, not the outcome, so a well-informed, well-documented decision is defensible even if the company loses money on it. The presumption can be lost, however, where a director had a conflict of interest, acted in bad faith, or failed to inform themselves before deciding, which shifts the burden onto the directors to prove the decision was fair. For a venture-backed startup, this is why disciplined board process, clear minutes, and independent review of conflicted deals are the practical difference between a claim that gets dismissed early and one that drags on.
The business judgment rule is a corporate-law doctrine that presumes a company's directors and officers acted on an informed basis, in good faith, and in the honest belief that their decision was in the company's best interest. Because of that presumption, courts will not second-guess a good-faith business decision simply because it later produced a bad result. It is most closely associated with Delaware, where a large share of venture-backed companies are incorporated, and it functions as a core protection for board members.
The rule is frequently the lead defense that D&O-funded counsel raises in shareholder and derivative suits against directors and officers. If the defense succeeds, it can knock out the case early and limit how much of your D&O policy gets spent on defending it. Because the doctrine rewards a sound decision-making process, carriers and defense counsel care a lot about whether your board kept good records, reviewed real information, and handled conflicts properly.
Yes. The presumption is rebuttable, so it can fall away where a director had a personal conflict of interest, acted in bad faith, or failed to become reasonably informed before deciding. When that happens, the burden can shift to the directors to show the decision was entirely fair, which is a much harder standard to meet. This is why documenting your process and recusing conflicted directors matters as much as the decision itself.
Definitions are educational and may be modified by your specific policy language, endorsements, and state rules. For regulatory guidance, refer to the California Department of Insurance or the NAIC.
Last updated: July 2026.