Many different scenarios can create changed circumstances. For example, if the paying parent has had a large increase in income, the court can order the child support increased. Or, if the child's needs grow, such as if the child becomes ill or disabled, the amount of support can be ordered raised. Sometimes the mere passage of time creates the changed circumstances. For example, as a child grows older, it becomes more expensive to buy clothes, food and other necessities. These increased expenses can be enough to justify a raise in the support order.Support can also be reduced if you can show why this would be fair. For example, support payments may be reduced if the custodial parent inherits money, gets a large raise or otherwise has an increased ability to support the children. Or, if the paying parent loses his or her job, the court can be asked to reduce support during the period of unemployment.