Is it necessary to register a will for it to be valid?

In most cases, registration of a will isn't compulsory for it to be legally valid — a will that is properly signed by you and attested by the required number of witnesses (generally at least two) is legally valid even without registration.

That said, registering your will does offer meaningful practical benefits: it's kept in official custody from the date of registration, making it considerably harder to argue it was tampered with, forged, or improperly executed, which can help avoid or resolve disputes among your heirs later.

Given how relatively simple and inexpensive registration is compared to the potential cost and stress of a contested, unregistered will being challenged after your death, most legal advisors do recommend registering a will as good practice, even where not strictly legally required. It's worth discussing this, along with the overall content of your will, with a lawyer experienced in estate planning.