How Illinois child support orders are created and enforced
In Illinois, child support is a legal obligation for a parent to pay money toward the care of their child. The state's Department of Child Support Services (DCSS) handles most cases, though you can also go through a private attorney or the court directly. The process starts when someone — usually the custodial parent, but sometimes the state if you receive public benefits — files a petition. A judge then reviews income, custody arrangements, and other factors to set a monthly payment amount.
Once an order is in place, the paying parent (called the obligor) must send payments to the Illinois Centralized Collection and Disbursement Unit (CCDU), a state office that receives all child support money. The CCDU then distributes it to the receiving parent (called the obligee) or to the state if benefits were involved. This system exists so the state can track payments and enforce the order if someone falls behind.
If a parent does not pay, the DCSS can take action: garnishing wages, intercepting tax refunds, suspending a driver's license, or filing a contempt case in court. The state can also report unpaid support to credit bureaus, which affects the obligor's credit score.
Key Takeaways
- Illinois uses an income-based formula to calculate child support, and the amount depends on how much each parent earns and how much time each parent spends with the child.
- The Department of Child Support Services handles most cases for free, but you can also hire a private attorney or go through the court on your own.
- All payments go through the state's Centralized Collection and Disbursement Unit so the state can track them and enforce the order if needed.
- If a parent stops paying, the state can garnish wages, intercept tax refunds, suspend licenses, and report the debt to credit agencies.
- Child support orders can be changed if a parent's income drops significantly or custody arrangements shift, but you must file a formal request with the court.
How Illinois calculates the monthly payment amount
Illinois uses a percentage-of-income model to set child support. The court takes the combined net income of both parents and applies a percentage based on how many children are involved. For one child, the percentage is 20 percent of combined net income; for two children, 28 percent; for three, 32 percent; for four, 40 percent; and for five or more, 45 percent or more.
The court then divides that total amount between the parents based on their individual incomes. For example, if the combined net income is $5,000 per month and there is one child, the total support obligation is $1,000. If one parent earns 60 percent of the combined income and the other earns 40 percent, the higher earner pays 60 percent of the $1,000 — which is $600 per month.
The calculation also factors in how much time each parent spends with the child. If one parent has the child more than 40 percent of the time, the payment may be adjusted downward. The court also considers childcare costs, health insurance premiums, and other expenses when setting the final amount.
Who can start a child support case in Illinois
The custodial parent (the one the child lives with most of the time) can file for child support. The non-custodial parent can also file if they have the child a significant portion of the time and the other parent has higher income. The state itself can file on behalf of a parent who receives Temporary information for Needy Families (TANF), food stamps, or Medicaid — this is called IV-D services, and it is automatic in those cases.
You can start a case through the Illinois Department of Child Support Services for free, or you can hire a private attorney. If you go through DCSS, you fill out an process and provide basic information about the other parent and the child. The state then locates the other parent, serves them with court papers, and handles the case from there. If you use a private attorney, they file the petition directly with the circuit court in the county where the child lives or where the other parent lives.
Even if you do not file, the state may open a case on its own if you receive public benefits. You do not have to do anything — the DCSS will contact you and explain what is happening.
What happens during a child support hearing
Once a petition is filed, the other parent is served with notice and has time to respond. If both parents agree on the amount, you can submit a written agreement to the judge, and the case may be finished without a hearing. If there is disagreement, the case goes to court.
At the hearing, both parents present information about their income, expenses, and time with the child. You can bring pay stubs, tax returns, and other documents to prove your income. The judge listens to both sides and then issues a child support order — a legal document that states the monthly payment amount, when it is due, and how it should be paid.
The order also covers other details: whether the obligor must provide health insurance, who pays for childcare, and what happens if the obligor's income changes. Once the order is signed by the judge, it is legally binding. Both parents must follow it, and the CCDU begins collecting and distributing payments.
How payments are collected and distributed
The obligor can pay child support in several ways. The most common is wage withholding, where the employer automatically deducts the payment from the obligor's paycheck and sends it to the CCDU. This happens without the obligor having to do anything — the court order goes directly to the employer.
If the obligor is self-employed or does not have a regular employer, they can pay by check, money order, or electronic transfer to the CCDU. The CCDU has a website where obligors can set up online payments. Some obligors also pay through a private child support payment service, though the CCDU is the official route.
The CCDU receives the payment, records it against the case, and then sends the money to the obligee within one to two business days. If the obligee receives public benefits, some or all of the payment may go to the state to reimburse what was spent on benefits. Once the obligee is no longer on benefits, all payments go directly to them.
What happens if a parent does not pay
If the obligor falls behind on payments, the DCSS sends a notice and usually gives them time to catch up. If they do not pay, the state can take several enforcement actions. Wage garnishment is the most common — the court orders the employer to withhold child support from the obligor's paycheck before they receive it.
The state can also intercept federal and state tax refunds and explore them to the unpaid balance. Driver's licenses can be suspended, making it illegal to drive. The obligor's professional licenses (for doctors, lawyers, contractors, and other licensed professions) can also be suspended. In serious cases, the state can file a contempt of court charge, which can result in jail time if the obligor has the ability to pay but refuses.
Unpaid child support is also reported to credit bureaus as a debt, which damages the obligor's credit score and makes it harder to borrow money or rent housing. The debt does not go away — it can be collected for years, and in some cases, the state can pursue it even after the child turns 18 if there is a large arrearage.
How to change a child support order
A child support order can be changed if there is a substantial and continuing change in circumstances. This usually means the obligor's income has dropped by 10 percent or more, or custody arrangements have shifted significantly. A job loss, a serious illness, or a major increase in income can all be grounds for a change.
To request a change, you file a petition with the court in the county where the original order was issued. You must provide recent pay stubs, tax returns, or other proof of your current income. The court then reviews the request and decides whether to modify the order. If approved, a new order is issued with a different payment amount.
You can request a change through the DCSS for free, or you can hire an attorney. The DCSS also automatically reviews cases every three years to see if circumstances have changed enough to warrant an adjustment. If you do not request a change and circumstances improve for the obligor, the payment amount stays the same until you formally ask the court to lower it.
When child support ends in Illinois
Child support continues until the child turns 18, or until they graduate from high school, whichever is later. If the child is still in high school after turning 18, support continues until graduation or age 19, whichever comes first. Support also ends if the child joins the military, gets married, or becomes self-supporting.
The obligor does not automatically stop paying when the child reaches the age limit — the obligee or the DCSS must file a motion to terminate the order. If the obligor continues to pay after the order ends, they can sometimes recover the overpayment, though this varies by case.
If the child has a disability and cannot support themselves, the obligor may be required to continue paying beyond age 18. This requires a separate court order and is not automatic.
Frequently Asked Questions
Can I get child support if I was never married to the other parent?
Yes. In Illinois, you can get child support whether you were married or not. If you were not married, the other parent's paternity must be established first — either through a voluntary acknowledgment or a court order. Once paternity is established, the child support process is the same as for divorced parents.
What if the other parent lives outside Illinois?
Illinois can still enforce child support against a parent who lives in another state through the Uniform Interstate Family Support Act (UIFSA). The DCSS can work with the other state's child support agency to locate the parent, establish an order, and collect payments. The process takes longer but works the same way.
Can I get child support if I have joint custody?
Yes. Even if both parents share custody equally, one parent may still owe child support if they earn significantly more than the other. The court calculates the obligation based on each parent's income and the percentage of time each parent has the child. The higher earner typically pays the lower earner.
What if the obligor claims they cannot afford to pay?
The obligor can request a modification of the order and present evidence of financial hardship. However, the court will not lower the payment just because the obligor says they cannot afford it — they must show proof through pay stubs, tax returns, or other documents. Even if income has dropped, the obligor is still expected to pay something unless they are completely unable to work.
Does child support cover college expenses?
No. In Illinois, child support ends when the child graduates high school or turns 19, whichever comes first. College expenses are not covered by the standard child support order. However, parents can agree in writing to continue support through college, or the court can order it in some cases if both parents have the means.