For parents going through a divorce in Rolling Meadows, Palatine, Schaumburg, Arlington Heights, Elk Grove Village, and surrounding northwest Chicago suburbs, child support can be one of the most important financial issues to resolve. Parents understandably want to know how much support may be ordered, what factors the court will consider, and whether the amount will change depending on the parenting time arrangement. Understanding how Illinois calculates child support can help parents better prepare for divorce proceedings and evaluate potential settlement options.
Illinois uses an income shares model when calculating child support. Rather than looking exclusively at the income of the parent who will be paying support, the calculation generally considers both parents’ financial circumstances and the number of children involved. However, determining an appropriate child support obligation can become more complicated when parents have unequal incomes, shared parenting arrangements, bonuses, self-employment income, or substantial expenses associated with raising their children.
How Does Illinois Calculate Child Support?
Under Section 505 of the Illinois Marriage and Dissolution of Marriage Act, Illinois generally uses an income shares approach to determine child support. The model considers the combined adjusted net income of both parents and estimates the financial resources that would ordinarily be available to support their children if the household remained intact. Each parent’s share of the basic support obligation is then determined based on their proportionate contribution to the combined adjusted net income.
The calculation also considers the number of children and the applicable schedule of basic child support obligations. Although the guidelines provide a starting point, courts may deviate from the calculated amount when appropriate under the statutory factors. Parents should understand that child support is intended to address children’s financial needs rather than serve as a financial reward or punishment for either parent.
For additional background, read our article on Child Support Guidelines.
Does Parenting Time Affect Child Support?
One common misconception is that parents who share parenting time equally will automatically have no child support obligation. Under Illinois law, that is not necessarily the case. When each parent exercises at least 146 overnights annually, the shared physical care calculation generally applies, incorporating the parents’ respective incomes and the number of overnights each exercises.
For example, parents living in Palatine and Schaumburg may agree to a parenting schedule that allows their children to spend approximately equal time in both households. However, if one parent earns substantially more than the other, a child support obligation may still result from the applicable calculation. The amount depends on the relevant financial information and the statutory formula rather than parenting time alone.
Parenting arrangements should also account for practical considerations such as school attendance, transportation, extracurricular activities, and the children’s existing routines. Our related article on Options for 50-50 Custody discusses considerations involving shared parenting arrangements.
What Income Is Considered When Calculating Child Support?
Determining each parent’s income is an important part of the child support process. Although regular employment wages may be relatively straightforward to document, some parents receive compensation from several different sources. Business ownership, commissions, bonuses, investment income, and other financial arrangements can make determining the appropriate income figure more complicated.
Depending on the circumstances, income considered under Illinois law may include:
- Employment wages and salaries
- Bonuses and commissions
- Self-employment income
- Certain investment income
- Rental income
- Retirement and pension distributions
- Other qualifying sources of income
Illinois law contains specific provisions governing the determination of gross and net income, including allowable deductions and adjustments. When a parent owns a business or receives irregular compensation, additional financial records may be necessary to establish the appropriate income for support purposes.
What About Health Insurance and Extracurricular Expenses?
The basic child support calculation does not necessarily resolve every financial responsibility associated with raising children. Illinois law separately addresses certain expenses, including health insurance, uncovered medical costs, childcare, and qualifying extracurricular or school-related expenses. These additional obligations may be allocated between parents based on their respective financial circumstances and the applicable statutory provisions.
For families in Arlington Heights, Rolling Meadows, Palatine, and neighboring communities, these expenses may include childcare required for employment, sports participation, educational activities, or ongoing medical treatment. Parents should carefully review which expenses are included in the basic support calculation and which may require additional contributions. A well-drafted settlement can establish clear expectations concerning payment procedures, documentation, and reimbursement.
What If One Parent Owns a Business?
Child support calculations can become more complicated when one or both parents own a closely held business. Unlike an employee who receives a regular paycheck, a business owner may receive income through salary, distributions, or other financial arrangements. Business expenses and deductions may also require closer examination when determining income available for child support.
A business owner’s taxable income does not necessarily establish the precise amount of income that should be used for support purposes. Illinois law contains provisions addressing income from self-employment, rental properties, business ownership, and similar sources. Financial statements, tax returns, payroll records, and other business documents may therefore become relevant when evaluating the appropriate child support calculation.
Can Child Support Be Modified After Divorce?
A child support order is not necessarily permanent. Parents may experience changes in employment, income, parenting arrangements, or other circumstances that affect their financial responsibilities. Under Illinois law, modification may be appropriate when the applicable statutory requirements are satisfied, including circumstances involving a substantial change in circumstances.
For example, a parent living in Schaumburg may lose employment, experience a significant income increase, or become responsible for a different parenting schedule after the original divorce decree is entered. These developments may warrant reviewing the existing support order, but parents should not assume that an informal agreement automatically changes their legal obligations. A court order generally remains enforceable unless it is properly modified.
For more information, see our article on What Is Considered a Substantial Change in Circumstances for Modification?.
What Happens When a Child Turns 18?
Parents sometimes assume that all financial obligations automatically end when a child reaches adulthood. However, the termination of ordinary child support depends on the applicable order and Illinois law, including provisions addressing children who remain in high school. Parents should review the specific terms of their existing orders rather than assuming that payments end automatically on a particular birthday.
Illinois also permits courts to address certain educational expenses for children who have reached adulthood. Section 513 of the Illinois Marriage and Dissolution of Marriage Act allows courts to allocate qualifying postsecondary educational expenses under appropriate circumstances. These obligations are distinct from ordinary child support and may involve tuition, housing, books, and other qualifying educational costs.
Addressing Child Support in the Northwest Chicago Suburbs
For parents living in Rolling Meadows, Schaumburg, Palatine, Arlington Heights, Elk Grove Village, Hoffman Estates, and surrounding communities, understanding the Illinois child support guidelines can be an important part of preparing for divorce. Income differences, parenting schedules, health insurance, childcare, and other financial responsibilities can all affect the amount ultimately ordered. Carefully reviewing these issues can help parents evaluate potential agreements and better understand their continuing obligations.
Domestic relations proceedings involving residents of many northwest Cook County communities may be heard at the Third Municipal District courthouse in Rolling Meadows, depending on the applicable filing and assignment requirements. Parents should verify the proper court location and procedural requirements for their particular case.
Stange Law Firm, PC handles domestic relations matters, including divorce, child support, parenting time, and modification proceedings. Understanding how Illinois calculates child support can help parents make informed decisions about their children’s financial futures.
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