Massachusetts Trust Amendment Form. Utilize our Trust Amendment form to implement modifications to a Revocable Living Trust.Learn about the benefits of a living trust, how a trust differs from a will, and the steps you'll need to take to set up a living trust in Massachusetts. All the following forms are fillable PDF files that require Adobe Acrobat Reader for viewing. File sizes range from 60 KB to 250 KB. Trust amendments typically involve putting your changes in writing and securing the signature of the person who established the trust. A trust amendment form is a legal document you use to make changes to your revocable trust. It isn't meant to change your trust document as a whole. Assuming that a deed creates a charitable trust, a land trust would need to seek judicial approval to amend or modify the terms of the trust. You need to create a trust document (similar to a will) naming someone to take over as trustee after your death (called a "successor trustee").