The new york state unified court system (www.nycourts.gov) and the internal revenue service. A marital settlement agreement is a legal document that allows a couple to divide their property and liabilities as part of a divorce. Web a divorce settlement agreement, also known as a marital settlement agreement (msa) or separation agreement, is a legally binding contract that outlines the terms and conditions of a divorce or legal separation between a married couple. However, your divorce settlement agreement can be challenged or set aside if you can demonstrate fraud, duress or undue influence, or. The current versions of these forms are obtainable from the following agencies: