Why can an inheritance case create a conflict of laws?

An inheritance case can create a conflict of laws because legal systems worldwide vary significantly in how they govern the distribution of a decedent’s estate. When an estate involves assets or parties located in different jurisdictions, or when a decedent has connections to multiple countries, courts must determine which legal system applies to the matter.12

Conflicts typically arise due to the following factors:

• Diversity of Legal Traditions: Different jurisdictions have distinct rules regarding inheritance, such as whether a testator has complete freedom of testation or is restricted by "forced heirship" rules that protect spouses and children.3
• Personal Law and Domicile: In many legal systems, aspects of a person’s legal existence—including the validity of a will and the distribution of personal property—are governed by the law of their domicile or nationality. Because definitions of domicile and residence can vary or be interpreted differently across borders, determining the applicable "personal law" often leads to jurisdictional disputes.4
• Jurisdictional Overlap: Courts in different countries may claim authority to adjudicate the same estate, necessitating rules to decide which court has jurisdiction and which country's laws should govern the distribution of assets.1

Ultimately, conflicts law provides the framework to resolve these differences, ensuring that courts can determine the appropriate governing law and manage the enforcement of judgments across borders.12