Ex Nunc

Ex Nunc is a legal principle meaning 'from now on', indicating that an action or decision takes effect immediately and only pertains to future circumstances, rather than past events. It contrasts with the term 'Ex Tunc', which refers to actions or decisions that retroactively affect past events.

The principle traces back to Roman law, where it was utilized to distinguish between actions that affect past rights and those that only influence future rights. The clear differentiation helps in establishing the effective period of legal decisions.

In modern law, Ex Nunc is crucial when courts issue rulings that have prospective effects, such as injunctions or declaratory judgments. It ensures that parties understand their obligations or rights moving forward, without altering past legal standings.

• A court orders a remedy that applies to future transactions without altering the validity of past transactions.
• Legislation that decriminalizes an act only applies to acts committed after the law’s enactment date, not retroactively.

• Landmark case involving prospective rulings or injunctions