Callum Estate Lawyer, Ontario, page 4

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.

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).

An exceedingly complex legal doctrine that limits the amount of time that property can be controlled after death by a person's instructions in a will. For example, a person would not be allowed to leave property to her husband for his life, then to her children for their lives, then to her grandchildren. The gift would potentially go to the grandchildren at a point too remote in time.

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.

For federal estate tax filing purposes, the total of all property owned at death, without regard to any debts or liens against the property or the costs of probate. Taxes are due only on the value of the property the person actually owned (the net estate) plus the amount of any taxable gifts made during life. In a few states, the gross estate is used when computing attorney fees for probating estates; the lawyer gets a percentage of the gross estate.