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Child support is determined using the Income Shares model, which takes into account the net incomes of both parents, number of children, and some parenting-time arrangements. The aim is to estimate what the two parents would have contributed to their children’s needs if they were living together, and to assign that responsibility according to their means. Illinois has a different shared-care calculation that is used when each parent has at least 146 overnights with a child each year.
A child support case can be more than just calculating a basic monthly payment. Courts can also consider health insurance, uncovered medical expenses, child care costs and other expenses of raising a child. If a parent is self employed, owns a business, or is voluntarily unemployed or underemployed, income can also be a complicated issue. Understanding the family’s finances can be an important part of reaching an appropriate support order.
Whether you’re establishing child support for the first time, seeking a modification, or have an enforcement issue, O’Flaherty Law can help you understand your options and what lies ahead. Our attorneys serve parents in Waukegan and throughout Lake County to evaluate income, parenting schedules, expenses and current court orders. We focus on practical solutions that protect your financial interests and your children’s needs. In Illinois, modification of an existing child support order is generally permitted when there has been a substantial change in circumstances.
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The purpose of a consultation is to determine whether our firm is a good fit for your legal needs. Although we often discuss expected results and costs, our attorneys do not give legal advice unless and until you choose to retain us.
33 N. County St., Ste. 505
Waukegan, IL 60085
I am personally committed to ensuring that each one of our clients receives the highest level of client service from our team. Our mission is to provide excellent legal work in a cost-effective manner while maintaining open lines of communication between our clients and their attorneys. Many of our clients are going through difficult times in their lives when they reach out to us. They should feel comfortable leaning on the experience and knowledge of our attorneys as their counselors and advocates. We are here to help!

Not necessarily. Illinois uses a shared physical care formula when each parent has at least 146 overnights with the child each year. Because the calculation also considers each parent's income and the amount of parenting time exercised, one parent may still be required to pay support even when parenting time is close to equal.
Illinois looks at net business income, generally starting with business receipts and subtracting ordinary and necessary business expenses. Courts can exclude expenses considered inappropriate or excessive, and certain significant business-paid benefits that reduce a parent's personal expenses may also be treated as income.
No. A change in income does not automatically replace the existing child support order. A parent may need to request a formal modification, and Illinois generally requires a substantial change in circumstances unless certain statutory exceptions apply. Modifications generally affect payments coming due after proper notice of the request, which makes it important to act promptly when circumstances change.