When does a will and become legal?

A will becomes legal when it is created in accordance with the laws of the jurisdiction in which it is executed, typically requiring the testator (the person making the will) to be of sound mind and at least the legal age, usually 18. It must also be signed by the testator and witnessed by at least two individuals who are not beneficiaries of the will. Once the testator passes away, the will must go through the probate process to be validated by a court, at which point it is officially recognized as a legal document.