One main difference between a Will and a Trust is that a Will goes into effect only after you die, while a Trust takes effect as soon as you create it. Another difference between a Will and a Trust is that a Will passes through probate. That means a court oversees the administration of the Will and ensures the Will is valid and the property gets distributed the way the deceased wanted. A Trust passes outside of probate, so a court does not need to oversee the process, which can save time and money. Wills and trusts each have their advantages and disadvantages.