Party Incomes
Marriage Duration
Calculation Breakdown
Base Calculation
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40% Income Cap
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Final Estimated Annual Maintenance
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Estimated Duration
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Disclaimer: This statutory maintenance calculator provides an estimate for informational purposes only and is not legal advice. The court has final discretion. Consult a qualified Illinois attorney.
A Straightforward Process
Our calculator simplifies Illinois's complex maintenance formula into an easy-to-follow, three-step wizard.
Enter Net Incomes
Provide the annual net (after-tax) income for both parties. This is the foundation of the statutory calculation.
Select Marriage Duration
Choose the length of your marriage from the dropdown. This directly determines the duration of maintenance payments.
Analyze Your Results
Review the detailed breakdown, including the base calculation, the 40% income cap, and the final estimated award.
Built for Illinois Law
This is not a generic calculator. It's specifically engineered to follow the maintenance guidelines set forth in the Illinois Marriage and Dissolution of Marriage Act (IMDMA).
Statutory Formula
Applies the (33.3% of Payor's Net) - (25% of Recipient's Net) formula.
40% Income Cap
Includes the crucial rule that prevents the award from exceeding 40% of combined net income.
Duration Multipliers
Precisely calculates the term of payments using the official statutory multipliers.
Gain Clarity and Confidence
Understanding potential outcomes empowers you to make better decisions and navigate your divorce more effectively.
Demystify the Law
Illinois maintenance law is complex. Our tool translates the legal jargon and formulas into a clear, understandable estimate.
Aid Negotiations
Use this data-driven estimate as a neutral starting point for discussions with your spouse or legal counsel, saving time and conflict.
Plan Your Future
Get an initial financial picture of your post-divorce life, allowing you to plan budgets and set realistic expectations early on.
Free and Secure
Our tool is completely free to use. We do not store any of your personal financial information, ensuring your privacy is protected.
How Illinois Judges Decide
The formula is the starting point, but it's not the final word. A judge can deviate from the guideline amount after considering 14 statutory factors.
Needs of the Parties
The court evaluates the financial needs of each party, considering income, property, and obligations from the divorce.
Standard of Living
The lifestyle established during the marriage is a key benchmark for determining the needs of the recipient spouse.
Age and Health
The physical and emotional condition of both parties can impact their ability to earn income and support themselves.
Parental Responsibilities
If one parent's earning capacity is impaired due to parenting responsibilities, the court will take this into account.
Common Questions about Illinois Maintenance
Get answers to the most common questions about spousal maintenance to better understand your situation.
For divorces finalized after Dec 31, 2018, maintenance is not tax-deductible for the payer and is not considered taxable income for the recipient at the federal or state level. This is a major change from prior law.
Under Illinois law, the obligation to pay maintenance automatically terminates if the recipient spouse either remarries or cohabits with another person on a "resident, continuing conjugal basis."
Yes. Unless the parties agreed in writing that the maintenance is "non-modifiable," either party can ask the court to change it upon proving a "substantial change in circumstances" since the original order was made.
No. Illinois is a "no-fault" divorce state. This means that marital misconduct (such as adultery) is not considered by the court when dividing property or awarding spousal maintenance.