Big life changes often bring questions about a relationship status. Chicago couples who start families, buy homes or share finances sometimes wonder whether a civil union or a marriage makes more sense. Illinois law gives both nearly the same rights at the state level, but federal laws and long-term financial details may lead to different outcomes.
How Illinois recognizes each status
Illinois created civil unions in 2011 to give couples many of the same rights and protections that come with marriage. Inside the state, the law treats both relationships almost the same in daily life. Under Illinois law, you can expect similar rights in areas such as:
- Parental rights: Caring for children, sharing custody and arranging parenting time
- Property and health decisions: Inheriting assets, owning property together and making medical decisions for a partner
- Access to courts: Requesting financial support, dividing property and settling family disputes if the relationship ends
Because Illinois treats both statuses so similarly, many couples view a civil union as a practical choice, especially if they plan to stay in the state.
How federal law distinguishes each status
While Illinois sees them as nearly equal, the federal government treats them differently. Federal law recognizes marriage but not civil unions. This difference can have a real effect on long-term financial planning. Married couples may qualify for benefits that civil union partners do not, such as:
- Tax benefits: Filing joint federal tax returns and claiming certain tax credits
- Retirement benefits: Receiving Social Security spousal or survivor payments
- Other protections: Accessing immigration rights and receiving benefits for military families
If federal programs will matter for the couple’s financial future, marriage may open more doors.
How relocation and separation compare
Another point to consider is portability. Every state recognizes marriage across the United States, but some states do not honor civil unions. That can create confusion for couples who plan to move or work outside Illinois.
If the relationship ends, Illinois courts use a similar process to end both marriages and civil unions. Property division, parenting agreements and support decisions generally follow the same rules. However, federal law can complicate things like retirement accounts and pensions. Since those fall under federal control, dividing them after a civil union can be trickier and may come with different tax consequences.
FAQ about civil unions
Couples often have questions about how these legal relationships work and how they transition into marriage.
Can a civil union be converted into a marriage in Illinois?
You can convert your Illinois civil union by applying for a license at your county clerk’s office. Under state law, the clerk must waive the fee for a marriage license for couples who are already in a civil union. After you “solemnize” and register the marriage, your legal status officially transitions to a legal marriage.
This shift grants you access to federal benefits, such as Social Security survivor rights and specific tax advantages, that civil unions cannot provide. Converting your status ensures you secure the most comprehensive legal protections available.
Do employers treat civil unions and marriages the same for benefits?
Illinois law requires “fully insured” insurance policies issued in-state to treat civil unions and marriages equally. If an employer offers health or dental insurance to spouses, they must typically offer the same to civil union partners.
However, this mandate does not apply to self-funded plans that follow federal ERISA guidelines. Because the federal government does not recognize civil unions, you might also face higher federal taxes on the value of these partner benefits.
Check with your human resources department to confirm how your specific plan handles these situations. Understanding your policy now prevents unexpected costs or coverage gaps later.
What happens if a couple in a civil union moves out of Illinois?
Moving out of Illinois creates legal risks because many states do not recognize civil unions. If you move to one of those states, your new home government may treat you as two single individuals for medical or inheritance purposes.
Furthermore, Illinois courts generally require at least one partner to reside in the state for 90 days to establish jurisdiction for a dissolution. If both partners relocate, you may find it difficult to legally end the union. It is advisable to execute health care proxies and powers of attorney before moving to a new state to protect your partnership.
Finding the right fit
Choosing between a civil union and a marriage depends on the couple’s personal and financial goals. Some couples prefer civil unions for religious or financial reasons. Others choose marriage for its nationwide recognition and federal benefits. Taege Law Offices helps Chicago-area families understand how each option might affect their lives, guiding them toward decisions that fit their values and long-term goals.