How does citizenship by descent (jure sanguinis) work after the 2025 reform?

Italy has long allowed people to claim citizenship through an unbroken line of Italian descent. A 2025 reform (Law 74/2025) significantly tightened the rules, introducing generational limits and new conditions on how citizenship is transmitted across generations. In practice this means claims based on a great-grandparent or more distant ancestor may no longer succeed in the way they once did, and documentary proof has become stricter. Because the reform is recent and still being applied at consulates, anyone considering this route should verify their specific lineage against the current rules before assuming eligibility.