How can a valid will be amended?

One way to make changes to a last will is to make a codicil, which is an amendment to a last will. Another way is to make an entirely new last will that states that the new last will revokes and takes precedence over any older last wills.

Explanation: One way to make changes to a last will is to make a codicil, which is an amendment to a last will. You should not make any changes on your will after it has been signed. If you cross out a person's name or add a clause, your change will not be valid and your entire will might become invalid.