what are the age requirements for a person to be competent?
<answer> The age requirements for a person to be competent is 18 years of age. <context> At the time of the signing, most state require that you be mentally competent and at least 18 years of age. Witnesses. Witnesses are very important to the validity of a Will. The signature of at least two witnesses is required in order to affirm that you were mentally competent and under no duress at the time you executed the Will.