750 ILCS 5/502
2021 Illinois Compiled Statutes|Chapter 750 - FAMILIES|750 ILCS 5/ - Illinois Marriage and Dissolution of Marriage Act.|Part V - Property, Support And Attorney Fees

 (from Ch. 40, par. 502)Sec. 502. Agreement.(a) To promote amicable settlement  of disputes between  parties to a marriage attendant upon the dissolution of their marriage,  the parties may enter  into an agreement containing provisions for  disposition of any  property owned by either of them, maintenance of either of them, support,  parental responsibility allocation  of their children, and support of their children as provided in Sections 513 and 513.5 after  the children attain majority. The parties may also enter into an agreement allocating the sole or joint ownership of or responsibility for a companion animal. As used in this Section, "companion animal" does not include a service animal as defined in Section 2.01c of the Humane Care for Animals Act. Any agreement pursuant to this Section must be in writing, except for good cause shown with the approval of the court, before proceeding to an oral prove up.(b) The terms of the agreement, except those providing for the support and parental responsibility allocation of children, are binding upon the court unless it finds, after  considering the economic circumstances of the parties and any other relevant evidence  produced by the parties, on their own motion or on request of the court,  that the  agreement is unconscionable. The terms of the agreement incorporated into the judgment are binding if there is any conflict between the terms of the agreement and any testimony made at an uncontested prove-up hearing on the grounds or the substance of the agreement.(c) If the court finds the agreement unconscionable,  it may request the parties to submit a revised agreement  or upon hearing, may make orders  for the disposition of property, maintenance, child support and other matters.(d) Unless the agreement provides to the contrary, its  terms shall be set forth  in the judgment, and the parties shall be ordered to perform under such  terms, or if the agreement  provides that its terms shall not be set forth in the judgment, the judgment shall  identify the agreement and state that the court has approved its terms.(e) Terms of the agreement set forth in the judgment are enforceable by  all remedies available for enforcement  of a judgment, including contempt, and are enforceable as contract terms.(f) Child support, support of children as provided in Sections 513 and 513.5 after  the children attain majority, and parental responsibility allocation of children may be modified upon a showing of a substantial change in circumstances.  The parties may provide that maintenance is non-modifiable in amount, duration, or both. If the parties do not provide that maintenance is non-modifiable in amount, duration, or both, then those terms are modifiable upon a substantial change of circumstances. Property provisions  of an agreement are never modifiable. The  judgment may expressly preclude or limit modification of other terms set forth in the  judgment if the agreement so provides.  Otherwise, terms  of an agreement  set forth in the judgment are automatically modified by modification of the judgment.  (Source: P.A. 99-90, eff. 1-1-16; 99-763, eff. 1-1-17; 100-422, eff. 1-1-18.)