Trusts are the main staple of an estate plan. A trust is not just a probate avoidance tool. It's main use is to keep inherited property separate from marital property. There are two UPIAs, which is confusing: the Uniform Principal and Income Act and the Uniform Prudent Investor Act. I call the former the UP&IA, and the latter UPIA, but most people call both UPIA. They have recently been adopted in one form or another in most states, and anyone who is establishing or administering a trust simply has to know something about them both. They are very important. This article gives a good overview.