Divorce When Your Spouse Has Dementia

 Posted on February 12, 2026 in Health Issues and Divorce

When your spouse develops dementia, you face heartbreaking decisions about your marriage and future. You may feel torn between your commitment to your spouse, the stress of caregiving, and the reality that your spouse is not the person you married anymore. Many people in this situation wonder if divorce is right or even possible when their spouse can no longer make decisions.

If you are considering divorcing a spouse with dementia in 2026, a Geneva gray divorce attorney can help you work through your options. While divorcing someone with dementia has unique challenges, Illinois law offers ways to move forward.

Can You Legally Divorce a Spouse Who Has Dementia in Illinois?

The main issue in cases like these is that anyone filing for divorce has to have the mental capacity to understand what they are doing. Under the law 750 ILCS 5/403, all divorce petitions must be "verified." This means the person filing must swear under oath that the information is true.

A person with advanced dementia cannot usually do this. They do not have the mental capacity to understand the consequences of divorce. However, Illinois law provides a solution through the guardianship system.

How Does Guardianship Work for Divorce in Illinois?

Under Illinois law, someone can petition the court for permission to file for divorce on behalf of the person with dementia. This could be a family member or a court-appointed guardian. The person they are petitioning for is called a "ward." The guardian must go to probate court and prove with convincing evidence that the divorce is in the best interests of the person with dementia. When deciding whether to allow the divorce, the court will look at:

• The ward's current condition
• Their financial situation
• How the divorce might affect their care and well-being

Can You Divorce a Spouse with Dementia If Your Spouse Does Not Have a Guardian Yet?

If your spouse does not already have a guardian, you will need to establish guardianship before you can move forward with divorce. This requires filing a petition in probate court. You will need a written report from a licensed physician based on an evaluation of your spouse done within three months of filing the petition. 

This report must show that your spouse lacks the mental capacity to make decisions. Once guardianship is established, the guardian can petition the court for permission to file for divorce on the ward's behalf.

Can You Divorce Someone with Early-Stage Dementia?

The answer depends on whether the person has enough mental capacity to understand the consequences of filing for divorce. Some people with early-stage dementia may still meet this standard, especially if they are clear-headed when signing documents.

It can create legal problems later if someone challenges the divorce by claiming your spouse did not have capacity when they signed the papers. It is important to work with an attorney who can help document your spouse's capacity at the time of filing.

Can a Divorce from a Person with Dementia Be Challenged Later?

If you divorce a spouse with dementia without following proper guardianship procedures, the divorce could be challenged and possibly invalidated. Anyone who believes your spouse did not have the mental capacity to understand the divorce could file a challenge. This could be a family member of your spouse or someone else. Going through the guardianship process, even though it takes longer, gives you more legal protection.

How Does Dementia Affect Property Division and Support?

Illinois is an "equitable distribution" state. The court divides property fairly, but not necessarily equally. If one spouse has dementia, the court will consider their ongoing care needs when dividing property. The court may also order maintenance (alimony) to help pay for the person's care.

If your spouse will need long-term care in a nursing home or memory care facility, health insurance planning will be an important part of your divorce. An attorney can help you navigate these issues so that your spouse gets the care they need while protecting your own financial future.

Call a Kane County, IL Divorce Attorney Today

Divorcing a spouse with dementia is one of the most difficult decisions you may ever face. The process involves complex legal issues that need guidance from someone who understands both family law and elderly divorce protocols.

If you are considering a divorce from a spouse with dementia, a Geneva gray divorce lawyer at Divorce Over 50 - Goostree Law Group can help you understand your options and guide you through the legal process. We offer free consultations and can answer your questions about guardianship, property division, and your spouse's future care. Contact us at 630-634-5050 today to schedule your initial consultation.