 What's a certification of trust? Is it a living trust? No. A certification of trust is a several-page document that says, in effect, I have a trust, here's the name of my trust, and here are the powers that I can do acting under my trust. A certification of trust is a document you take to a bank, for example, when you want to change the title on a bank account to your living trust, or if you're buying a piece of property or a time share or changing beneficiaries on certain insurance policies, whatever. Whenever you want to involve your living trust title, the certification of trust is the document you use to show other professionals the proper name of your trust, the tax identification number, etc. Certification of trust is an important part of a living trust-centered estate plan.