A testamentary trust is a type of trust that is established in a person’s will and takes effect after a person’s death and after the person’s estate goes through the probate process. Testamentary trusts are often created to benefit children or individuals with disabilities, and a will may contain more than one testamentary trust. A testamentary trust may apply to a person’s entire estate, or it may only apply to a portion of the estate. A testamentary trust is not always necessary, and there may be more preferable mechanisms available to accomplish a person’s estate planning goals.