By James Zaitsoff ( February 1, 2023, 8:58 AM EST) -- A person may enter into a testamentary contract, whereby they agree to leave their estate to another person in exchange for some consideration, for example services that the other person provided or has agreed to provide in the future. This results in a binding contract, and the contracting party no longer has the ability to change the named beneficiary in their estate plan without breaching the agreement; if they attempt to do so then the disappointed beneficiary may sue to enforce the agreement....