What are the formalities/requirements in signing a will?

Any person age eighteen or over (or a married person of any age), who possesses the requisite mental capacity (generally, comprehension of one’s assets and to whom he or she wishes to leave those assets), may execute a will. Two witnesses must either see the testator sign the will or have the testator affirm his or her signature to them. It is advisable to include a self-proving affidavit with the will. The particular format for execution of the will and affidavit is set forth in the South Carolina Probate Code.