There are four major ways by which a testator may revoke a will. They are as follows:
a. By making a superseding will: By law, an existing will can be revoked by a will made later in time by the same testator, provided that the later will is executed in the same manner as the earlier one. The testator must not expressly state that the later will revokes the former, the fact of making another will, not a codicil to an existing will, is enough to imply a revocation and particularly so where the terms of both wills are inconsistent or different. Section 20, Wills Act.
b. Intentional Revocation: This is where there is animus revocandi, that is, intention to revoke. A testator can revoke a will by expressly stating in writing that he has revoked his will and executes or signs the document in the same manner as the will, that is, in the presence of two witnesses who must also sign as witnesses. Section 20, Wills Act.
c. Destruction: A testator may also revoke his will by burning, tearing or otherwise destroying the will by himself or by some person, in his presence and by his direction, with the intention of revoking same. Destruction without the requisite intention to destroy or revoke the will makes revocation invalid and the will, shall remain very much alive in the face of the destruction. Section 20, Wills Act.
d. By subsequent marriage: Where a testator makes a will and thereafter contracts a statutory marriage, the will made is automatically revoked. The will stands revoked after a subsequent marriage whether or not the testator intended it to be revoked or not. Section 18, Wills Act.