Download and complete Divorce, Child Support, and Maintenance forms from the Illinois Office of the Courts. Learn about the types of alimony available in Illinois, how it's calculated, and the factors courts consider when awarding spousal maintenance.Maintenance, formerly known as alimony or spousal support, plays a crucial role in many Chicago divorce cases. All the debt incurred since you got married. Fill out your divorce forms. In a divorce or separation, the court can grant alimony to the party seeking maintenance. Spousal support, referred to as maintenance in Illinois (formerly known as alimony), may be awarded to either spouse, as the court seems fair. Maintenance, sometimes referred to as alimony or spousal support, is financial support that one spouse pays to the other in the event of a divorce. How Is Child Support Calculated in Illinois? To determine someone's current income for child support or maintenance purposes, Illinois divorce law looks at their past income.