There are many instances in life where binding financial agreements are needed, be they divorce and property settlement or financial disputes of some other kind. When it involves divorce, family lawyers can give better advice because they will be able to understand the specifics of your situation when you consult with them.
In general, a binding financial agreement is to ensure that assets and debts are divided equally between the two who have divorced or are currently in the process of divorcing. There is no need to wait until the divorce is final before you decide on how to divide the property or cash, whatever the assets are. If is possible to come to a decision between the two of you without waiting for it to go to court. If you have to go to court there will be court fees to pay and this will mean less for you both.