Adding changes or writing below your signature Your last will and testament should ideally be a final written declaration of your wishes regarding the distribution of your estate and assets. You should never add any new information below your signature, or anywhere on the document after it has been signed, as doing so so may render the will invalid. There are two recognized ways to go about changing your will if your assets, circumstances, or relationships change: 1.Make minor changes with a codicil. A codicil is a separate document that explicitly refers to the original will and serves as a minor amendment rather than a replacement. In your codicil, refer explicitly to your original will and mention the specific section that you are modifying. Example: I, John Brown, declare this Codicil (“Codicil”) to my last Will and Testament (“Will”) dated August 14, 1994, effective as of today, January 1, 2019. Item I Article B of my will shall be modified to read: Item II Article D shall be added to my will, and should read: 2. If the changes are numerous and/or substantial, write a new will. This is especially common if you write your first will at a young age. Your circumstances will change so dramatically over the course of your life that it only makes sense to completely revise and rewrite your last will and testament.