What You Need to Know About Protecting Retirement Accounts in Illinois Divorces

 Posted on April 30, 2026 in Division of Property

Retirement accounts are often the most valuable thing a couple owns, sometimes worth more than the family home. If you are going through a divorce in Illinois in 2026, you need to know what happens to your 401(k), IRA, or pension. The rules for retirement accounts in a divorce are different from most other assets. Mistakes can be costly. An experienced Arlington Heights divorce attorney can help you protect what you have saved.

Does Illinois Law Require Retirement Accounts To Be Split in a Divorce?

Illinois is an equitable distribution state. Courts divide marital property fairly, but not always equally. Under 750 ILCS 5/503 of the Illinois Marriage and Dissolution of Marriage Act, retirement funds built up during the marriage are generally marital property. That includes money put into a 401(k), 403(b), pension, or similar plan from the date of the marriage until the court enters the divorce judgment, legal separation judgment, or declaration that the marriage is invalid.

Retirement savings are among the largest financial assets many couples own, making this one of the most contested parts of an Illinois divorce. Money already in a retirement account before you married is usually separate property. It is typically not subject to division. However, if marital money or major personal effort helped increase the account’s value, the marital estate may have a reimbursement claim. This is one reason why valuation and documentation matter so much in these cases.

What Is a QDRO and Why Do You Need One To Divide a Retirement Account in Illinois?

A Qualified Domestic Relations Order, or QDRO, is a court order that tells a retirement plan how to split benefits between divorcing spouses. Without one, the plan will not divide the account. This is true even if the divorce decree says it should be split.

A QDRO must follow the rules of the specific plan. Every plan is different. Common mistakes include not specifying how the account will be divided, missing early withdrawal penalties, or submitting a draft that the plan rejects. Once a QDRO is approved, the receiving spouse can move their share into their own IRA or plan without tax penalties. That protection is gone if the funds are withdrawn instead.

IRAs work differently. They do not require a QDRO. They are divided through a transfer incident to divorce. This process must be done correctly to avoid taxes and penalties.

What Types of Retirement Accounts Come Up in Illinois Divorce Cases?

Several types of retirement accounts may need to be divided. The most common include:

• 401(k) and 403(b) plans: Employer plans funded with pre-tax dollars that require a QDRO to divide
• Traditional and Roth IRAs: Individual accounts divided through a transfer incident to divorce, not a QDRO
• Pensions: Pay a set monthly amount at retirement and require calculating the marital share and a pension-specific QDRO
• Deferred compensation plans: Often offered to government workers or executives and have their own division rules
• Military retirement benefits: Governed by federal rules under the Uniformed Services Former Spouses' Protection Act

Each account type has different tax rules and division steps. Treating a pension like a 401(k) is a common and expensive mistake.

What Happens to Your Illinois Retirement Account If a QDRO Is Never Filed After Divorce?

If a divorce is final but a QDRO is never filed, the non-account-holding spouse can lose their share. This is especially likely if the account holder retires, dies, or names a new beneficiary first. Get it right during the divorce. Your attorney should confirm the QDRO is filed, approved, and on record. A divorce decree that mentions retirement accounts without a plan-approved QDRO does not protect you.

Frequently Asked Questions About Retirement Accounts in Illinois Divorce

Can my spouse claim part of my 401(k) if I was the only one who contributed to it?

Money put in during the marriage is generally marital property. It does not matter whose name is on the account. That alone does not protect it from division.

What if my spouse cashed out a retirement account before the divorce was filed?

This may be treated as dissipation of marital assets. A spouse who wastes marital property during the breakdown of a marriage can be held accountable. The court can give the other spouse a larger share of what is left to make up for it.

Does it matter whether my retirement account is a traditional IRA or a Roth IRA?

Traditional IRAs are funded with pre-tax dollars, so withdrawals are taxed as income. Roth IRAs are funded with after-tax dollars, so qualified withdrawals are tax-free. When dividing retirement accounts, you should account for these differences so that each spouse's share has equal after-tax value.

Schedule a Free Consultation with an Arlington Heights, IL Divorce Attorney

Dividing retirement accounts is one of the most technical parts of an Illinois divorce. Getting it wrong can cost you thousands in taxes, penalties, or lost benefits. That is where an experienced Rolling Meadows, IL property division lawyer can help.

Attorney Don Cosley personally handles all aspects of his cases. When you call with questions, you will speak directly with him, not a paralegal or assistant. He offers free consultations and is ready to help you protect what you have built. Call the Law Offices of Donald J. Cosley at 847-253-3100 today.