In Illinois, child support covers a child’s everyday living costs — housing, food, clothing, basic transportation, and ordinary school and household expenses. It does not automatically cover everything. Health insurance, out-of-pocket medical bills, daycare, school and activity fees, and even college are treated as separate expenses. These get added on top of the base support amount and split between the parents.
This article breaks down what that base payment is actually meant to cover, which big-ticket costs are handled separately, and what child support doesn’t touch at all.
What does the basic child support payment actually pay for?
The base payment is meant to cover a child’s ordinary, day-to-day needs — a roof, meals, clothes, getting to and from school, and the routine costs of running the household the child lives in. Illinois law frames the duty broadly: under 750 ILCS 5/505(a), a parent’s obligation is to provide for the “reasonable and necessary physical, mental and emotional health needs of the child.”
Here’s the part that trips people up: the base amount is not itemized. When the court sets a monthly figure, that money isn’t earmarked line-by-line. The statute states that the receiving parent’s share is presumed to be spent directly on the child (750 ILCS 5/505(a)(1.5)). In practice, that generally means the paying parent can’t demand a line-by-line accounting or receipts for how it’s spent. So the base number is a general contribution to the cost of raising the child, not a reimbursement account for specific purchases.
If it’s one payment, why doesn’t it cover everything?
Because Illinois doesn’t build every cost into that single number. Since July 1, 2017, the state has used the income shares model. This system combines both parents’ net incomes and estimates what a household at that income level would ordinarily spend on the children. It then splits that figure between the parents in proportion to what each one earns (750 ILCS 5/505(a)(1.5)). The result is the “basic child support obligation,” and that base figure is what covers the everyday expenses described above.
Certain major costs sit outside that base number on purpose. The statute treats health insurance, medical expenses, childcare, and school and activity fees as separate items the court allocates on top of the base amount (750 ILCS 5/505(a)(3.6), (3.7), (4)). That’s the whole reason the “child support covers everything” assumption breaks down. Several of the expenses parents worry about most are handled as add-ons, each with its own rule. The next four sections walk through them.
(Worth knowing: the base amount also shifts depending on each parent’s income and the parenting schedule. That affects how much you pay, which is a separate question from what it covers — so this article stays focused on coverage.)
Who pays for health insurance and medical bills?
Both parents, usually — and this is handled separately from the base payment. Illinois law requires the court to address the child’s medical needs directly in every support order. Typically, that means ordering one or both parents to carry health insurance for the child (750 ILCS 5/505(a)(4); 750 ILCS 5/505.2). The base support number is understood to absorb small, ordinary out-of-pocket medical costs, but insurance premiums and larger expenses are treated as additional obligations.
The medical piece generally breaks into two parts:
- Insurance coverage. The court orders a parent to name the child as a beneficiary on an available health plan — usually through an employer. The part of the premium that covers the child gets added to the support calculation and split between the parents by income share. There’s a guardrail: the cost of providing that coverage generally can’t exceed 5% of the providing parent’s gross income (750 ILCS 5/505(a)(4)(G)).
- Unreimbursed and extraordinary medical costs. These are the bills insurance doesn’t fully pay — think unreimbursed medical, dental, orthodontic, or vision expenses, plus prescriptions not covered by the plan. The court can order either or both parents to contribute to these, again typically split by income share (750 ILCS 5/505(a)(4)(B)).
So if your child needs braces or racks up a hospital bill, that’s usually a shared cost handled on top of the monthly support — not something the base number silently swallows.
Does child support cover daycare and after-school care?
Often, but as a separate add-on rather than part of the base payment. Under 750 ILCS 5/505(a)(3.7), the court can order either or both parents to contribute to reasonable childcare expenses on top of basic support. Those costs are split in proportion to each parent’s income.
Not just any childcare qualifies. The statute ties it to work and school — childcare expenses that let a parent hold a job, attend school or vocational training, or search for work. It specifically includes before- and after-school care, deposits to hold a spot in a program, and camps during school breaks (750 ILCS 5/505(a)(3.7)(A)). If your child is in daycare so you can work, that’s exactly the kind of expense the court can allocate between both of you. It can even be paid directly to the provider rather than routed through the other parent.
Are school fees, sports, and activities included?
They can be ordered on top of the base amount, but they aren’t automatic. Illinois law gives the court discretion to order either or both parents to contribute to reasonable school and extracurricular expenses — the fees and costs meant to support a child’s educational, athletic, social, or cultural development (750 ILCS 5/505(a)(3.6)).
The key word is discretion. Unlike medical coverage, which the court must address in every order, activity and school-fee contributions are something a court may order — they aren’t guaranteed. So travel-soccer fees, band, tutoring, or private-school costs aren’t presumed to be baked into the base number. Whether they get shared as an add-on depends on the family’s circumstances and what the order actually says. This is precisely the kind of expense that leads to fights later when parents assumed it was “included” and the order never addressed it.
Will I have to help pay for college too?
Possibly — and this surprises a lot of people, because it isn’t “child support” in the usual sense. Under a separate statute, Section 513 of the Illinois Marriage and Dissolution of Marriage Act, a court can order parents to contribute to educational expenses for a non-minor child, which can include college. This is a distinct obligation from the basic child support you pay while your child is a minor.
Two things make it different from ordinary support. First, it’s a separate legal claim. The right to seek educational expenses under Section 513 exists independently of the Section 505 support obligation. It can be pursued even after regular child support has ended (750 ILCS 5/510(e); 750 ILCS 5/802(m)). Second, the specifics — how much, for what, and for how long — are determined by the court rather than by the guideline formula that sets basic support. If college is anywhere on your horizon, this is the piece most worth getting concrete advice on early. It can extend your financial obligation well past the point most parents assume everything ends.
What isn’t covered by child support?
Plenty — and clearing this up prevents a lot of conflict on both sides. A few things child support does not do:
- It doesn’t function as an expense account. In practice, the base payment isn’t itemized, and the paying parent generally can’t demand a spending breakdown or receipts. The statute presumes the receiving parent’s share is spent directly on the child (750 ILCS 5/505(a)(1.5)).
- It doesn’t automatically include the add-ons. Health insurance, childcare, extraordinary medical costs, and school or activity fees are handled separately. If your order doesn’t specifically address one of them, don’t assume it’s folded into the base number — it may simply be unaddressed.
- It isn’t spousal support. Child support is for the child. Money paid to support a former spouse is maintenance (what people often call alimony), a completely separate obligation with its own rules. One does not stand in for the other.
The practical takeaway: what you owe or receive is defined by what your court order actually says. Assuming an expense is “included” when the order actually allocates it separately — or doesn’t mention it at all — is one of the most common sources of post-divorce disputes.
What to do next
- Pull your actual court order and read exactly what it says about the add-ons — health insurance, medical costs, childcare, and activities. Most “I thought that was covered” fights come from an order that allocated those separately, or never addressed them at all.
- Gather both parents’ income documentation. Because Illinois uses the income shares model, both incomes drive the base number and the split on every add-on. That makes accurate financials the foundation of getting the numbers right.
- Talk to a family law attorney before you agree to a number or challenge one — especially if childcare, extraordinary medical costs, or college are on the table. Those are the pieces most often mishandled.
If you’re sorting through any of this in DuPage County, Lafata Law handles exactly these questions. Megan Lafata and Tom Elsner are both Northern Illinois University College of Law graduates who spent seven and eight years, respectively, as DuPage County prosecutors, each trying more than 100 cases to verdict. That courtroom experience is relevant to the coverage issues covered here: contested hearings over what the base amount should be, and disputes about how health insurance, childcare, and school and activity costs get allocated between parents. You can reach the firm through lafatalaw.com.
This article is general legal information, not legal advice. Reading it or contacting Lafata Law does not create an attorney-client relationship. Child support outcomes turn on the specific facts of your case and the terms of your court order — consult a licensed Illinois attorney about your situation.