Katoomba Estate Lawyer, Australia, page 5

A federal tax imposed on money placed in a generation-skipping trust. Currently, there is a $1 million exemption to the GSTT; that is, each person may leave $1 million in a generation-skipping trust free of this tax. The GSST is imposed when the middle-generation beneficiaries die and the property is transferred to the third-generation beneficiaries. Every dollar over $1 million is subject to the highest existing estate tax rate--currently 55%--at the time the GSTT tax is applied.

Convincing a probate court that a document is truly the deceased person's will. Usually this is a simple formality that the executor or administrator easily satisfies by showing that the will was signed and dated by the deceased person in front of two or more witnesses. When the will is holographic -- that is, completely handwritten by the deceased and not witnessed, it is still valid in many states if the executor can produce relatives and friends to testify that the handwriting is that of the deceased.

A trust designed to save on estate tax. The trust principal is preserved for the trust maker's grandchildren, with his or her children receiving only income from the trust. Because the children (the middle generation) never legally own the property, it isn't subject to estate tax at their death. See generation-skipping transfer tax.

Any trust that imposes limits or controls over the rights of trust beneficiaries. These trusts include (1) special needs trusts designed to assist people who have special physical, emotional or other requirements, (2) spendthrift trusts designed to prevent a beneficiary from wasting the trust principal; and (3) sprinkling trusts that allow the trustee to decide how to distribute trust income or principal among the beneficiaries.

Irrevocable trusts designed to save on estate tax. There are several kinds; with all of them, you keep income from trust property, or use of that property, for a period of years. When the trust ends, the property goes to the final beneficiaries you've named. These trusts are for people who have enough wealth to feel comfortable giving away a substantial hunk of property. They come in three flavors: Grantor-Retained Annuity Trusts (GRATs), Grantor-Retained Unitrusts (GRUTs) and Grantor-Retained Income Trusts (GRITs).