Fault-based in criminal law refers to a defendant being held responsible for an offence due to their culpability, which can manifest as intention, recklessness, negligence, or knowledge. This means that the individual is considered legally blameworthy, as their actions or inactions directly led to the criminal act. The level of fault varies depending on the specific nature of the crime, and it plays a vital role in the determination of guilt and potential punishment. Fault-based is a key principle in criminal law, as it emphasises personal responsibility and moral blame.