A will is a legal document created to provide instructions on how an individual’s property and custody of minor children, if any, should be handled after death. The individual expresses their wishes through the document and names a trustee or executor that they trust to fulfill their stated intentions. The will also indicates whether a trust should be created after death. Depending on the estate owner’s intentions, a trust can go into effect during their lifetime (living trust) or after their death (testamentary trust).