Alimony

Illinois courts may award maintenance in amounts and for periods of time the court finds “just,” using factors set out by statute. Maintenance is not automatic, it’s a fact-specific decision guided by the law. 

Step One: When Maintenance May Be Awarded

Before any guideline formula is applied, the court looks at statutory factors to decide whether maintenance is appropriate and, if so, what kind of award makes sense. Key considerations include (in plain English):

• Each spouse’s income, needs, and earning capacity
• The marital standard of living
• The length of the marriage
• Time a spouse spent out of the workforce (for example, raising children) and what it would take to become self-supporting
• Age and health
• Contributions to the household and to the other spouse’s career/education
• Tax consequences and other equitable factors

Why this matters: Two couples with similar incomes can see very different maintenance outcomes depending on the history of the marriage and each spouse’s realistic path forward.

Step Two: How Illinois Calculates Maintenance Amount (Guidelines)

In many cases, Illinois uses a statutory guideline calculation for the amount of maintenance:

• 33 1/3% of the payor’s net annual income
  minus
• 25% of the payee’s net annual income

With an important limit: the payee’s net income plus maintenance generally cannot exceed 40% of the parties’ combined net income.

A “Thinking Attorney” note: “Net income” is a legal term and often becomes a pressure point, especially with bonuses, commissions, self-employment, business ownership, overtime, or fluctuating pay.

Step Three: How Long Maintenance Lasts (Duration Guidelines)

Illinois also provides guideline structure for duration, which generally ties the maintenance length to the length of the marriage using statutory multipliers/schedules. For marriages 20 years or more, the court has discretion to award maintenance for a period equal to the length of the marriage or for an indefinite term.

What this means practically: Duration often matters as much as amount, sometimes more, because it shapes long-term budgeting, refinancing decisions, and settlement strategy.

Temporary Maintenance While the Divorce Is Pending

In many divorces, one spouse needs support while the case is ongoing. Illinois allows for temporary financial relief while the court process unfolds, which can include maintenance-style support depending on the circumstances.

Can Maintenance Be Modified Later?

Often, yes. Illinois law permits modification or termination of maintenance upon a showing of a substantial change in circumstances (unless your judgment/agreement makes maintenance non-modifiable).

Examples of changes that may matter include major income shifts, job loss, disability, or other significant financial changes.

When Does Maintenance End in Illinois?

Illinois provides that an obligor’s obligation to pay maintenance generally terminates by operation of law upon:

• The recipient’s remarriage, or
• The date the court finds the recipient began cohabiting with another person on a resident, continuing conjugal basis

Other termination rules can apply depending on the order’s terms and the facts, so it’s important to handle this carefully.

Important: Don’t “self-terminate” payments based on a suspicion. The statute can involve reimbursement rules and timing issues, and the cleanest path is always to address termination/modification through the proper legal process.

Common Maintenance Issues We Help Illinois Clients Solve

Because maintenance shapes real life, not just legal filings, we focus on the questions that actually move the needle:

• What is true income? (including variable pay, bonuses, business income, or underemployment)
• What is a realistic post-divorce budget? (housing, healthcare, childcare, debt)
• How do we tell the story behind earning capacity? (education, caregiving history, health limitations)
• Should maintenance be reviewable, fixed-term, or structured differently?
• How do we reduce future conflict through clear, enforceable terms?

The Johnson Law Group “North Star” Approach

Maintenance cases work best when you can see the map.

We help you:

• Understand what Illinois courts can do under the statute
• Build a clear evidentiary picture (income documentation, budgets, employment history)
• Negotiate from strength, or litigate when necessary, with a plan tailored to your goals
• Keep communication transparent so you always know what’s next

Hablamos Español. Virtual options available.

FAQs: Illinois Spousal Maintenance (Alimony)

Is alimony the same as maintenance in Illinois?

Yes. “Alimony” is the common term; Illinois law uses “maintenance.” 

Do the guideline formulas always apply?

Not in every case. The statute includes guidelines and also recognizes circumstances where guidelines may not apply or a different approach may be appropriate.

Does maintenance automatically end if my ex remarries?

Illinois law provides termination by operation of law upon remarriage (and on cohabitation once found by the court), but you still want to handle next steps properly to avoid disputes and enforcement issues.

Can maintenance be changed later?

Often yes, if there’s a substantial change in circumstances, unless the judgment/agreement says it’s non-modifiable.