Succession Act 1965 section 86

Alterations in will after execution

Section 86 sets out the rules governing the validity of any changes made to a will after it has been formally executed, and specifies how such changes must be authenticated.

• Any alteration made to a will after execution — whether by obliteration, interlineation, or other change — is invalid unless it is executed with the same formalities required for the will itself.
• An alteration can be validated if the testator and each witness sign in the margin or another part of the will opposite or near the alteration.
• Alternatively, signatures may be placed at the foot or end of, or opposite to, a memorandum that refers to the alteration and is written at the end or some other part of the will.
• If these signing requirements are not met, the alteration has no legal effect, though the remainder of the will stands.