Insight

Sweeping Changes to Illinois Child Support

Sweeping changes to the way Illinois courts will calculate child support are set to take effect July 1, 2017.

Father walks daughter and son down the road behind a calendar set for July 1st
TW

Written by Timothy E. Weiler

Published: June 1, 2017

Sweeping changes to the way Illinois courts will calculate child support are set to take effect July 1, 2017. Most people paying or receiving child support aren’t even aware of the first massive change to Illinois child support law in over 25 years, and in fact, many attorneys are similarly unaware of the new calculation methods.

For years Illinois has used a “percentage guideline” approach to the calculation of child support. This percentage guideline approach has simply taken a statutory multiplier (20 percent in situations where one child is to receive support) and applied it to the payor’s net income to reach a child support amount. For instance, a payor with $2,000 of net income was required to pay a $400 child support obligation for one child.

Effective July 1, 2017, Illinois will employ an “income shares” approach to the calculation of child support, and each party will have a specific statutory amount of child support for which he or she is legally responsible. Although the new rules provide that the parent with the majority amount of parenting time with the children will not actually pay the statutorily determined support amount, the effect of establishing that parent’s child support obligation is a reduction in the amount of child support he or she will receive from the parent with less parenting time.

The new calculations therefore require the court to determine the net income of both parents in order to calculate the child support due from one parent to the other. If both parties are employed, the net income of both parents (as determined by a statutorily defined formula) is combined, and the percentage of child support owed by each party is calculated by referencing a schedule developed by the Illinois Department of Healthcare and Family Services. If one parent is not employed or underemployed, the court can impute income to that parent in order to determine child support.

The new law also provides a formula designed to further reduce the non-majority time parent’s child support obligation if that parent has the child or children overnight for 146 or more nights per year. If you were divorced prior to January 1, 2016, this reduction might apply to you if you were designated as the “non-custodial” or “non-residential” parent but still have your child overnight for at least 146 nights during the calendar year.

There are many more new provisions taking effect July 1, 2017, involving payments for health insurance, extracurricular activities, childcare, etc. Our firm is available to assist you with any questions you might have as to how this new law might affect your right to or payment of child support.

-------------

Timothy E. Weiler has been selected to instruct lawyers about the new child support law on June 9. He is a graduate of the University of Iowa and the John Marshall Law School. He can be reached by calling 630-587-5600 or emailing tweiler@weilerlengle.com.

Trending Articles

Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore


by Jamilla Tabbara

Market drivers, diversity trends and the elite practitioners shaping the legal landscape.

Illustrated maps of Australia, Japan and Singapore displayed with their national flags, representing

Holiday Pay Explained: Federal Rules and Employer Policies


by Bryan Driscoll

Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.

Stack of money wrapped in a festive bow, symbolizing holiday pay

Can a Green Card Be Revoked?


by Bryan Driscoll

Revocation requires a legal basis, notice and the chance to respond before status can be taken away.

Close-up of a U.S. Permanent Resident Card showing the text 'PERMANENT RESIDENT'

How Far Back Can the IRS Audit You?


by Bryan Driscoll

Clear answers on IRS statutes of limitations, recordkeeping and what to do if you are under review.

Gloved hand holding a spread of one-hundred-dollar bills near an IRS tax document

Musk v. Altman: The Lawyers Behind the Case


by Jamilla Tabbara

Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.

Portrait photos of Elon Musk and Sam Altman positioned in front of the OpenAI logo.

US Tariff Uncertainty Throws Canada Into Legal Purgatory


by Bryan Driscoll

The message is clear: There is no returning to pre-2025 normalcy.

US Tariff Uncertainty Throws Canada Into Legal Purgatory headline

Can You File Bankruptcy on Credit Cards


by Bryan Driscoll

Understanding your options for relief from overwhelming debt.

Red credit card on point-of-sale terminal representing credit card debt

The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement


by Grace Greer

A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.

Split-screen image of Blake Lively and Justin Baldoni

How AI Is Changing the Way Clients Find Lawyers


by Jamilla Tabbara

Best Lawyers CEO Phil Greer explains how AI-driven search tools are reshaping legal marketing and why credibility markers matter.

AI chat bubble icon with stars representing artificial intelligence transforming client-lawyer conne

Colorado’s 2026 Water Rights Battles


by Bryan Driscoll

A new era of conflict begins.

Colorado Water Rights 2026: A New Era of Conflict headline

When Is It Too Late to Stop Foreclosure?


by Bryan Driscoll

Understanding the foreclosure timeline, critical deadlines and the legal options that may still protect your home.

Miniature house model on orange background surrounded by thumbtacks representing foreclosure

Can You Go to Jail at an Arraignment?


by Bryan Driscoll

Understanding What Happens at Your First Court Appearance.

A heavy chain lying on the ground in the foreground with a blurred figure standing in the background

What’s the Difference Between DUI and DWI?


by Bryan Driscoll

Understanding the terminology and consequences of impaired driving charges.

Driver during nighttime police traffic stop with officer's flashlight shining through car window

Canadian Firms Explore AI, But Few Fully Embrace the Shift


by David L. Brown

BLF survey reveals caution despite momentum.

Canadian Firms Explore AI, But Few Fully Embrace the Shift headline

How to Choose a Personal Injury Lawyer


by Bryan Driscoll

Finding the right legal representation after an injury is a critical decision that requires careful evaluation. 

3D scene representing the deliberative process of choosing a personal injury attorney

Is Federal Inaction Crippling New York’s Gun Laws?


by Bryan Driscoll

Tragedy tests the limits of Empire State gun control.

limits of new york gun laws headline