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Illinois law calls it maintenance, though most people still know it as alimony or spousal support, and it isn't something every divorce includes. A judge first has to find that maintenance is appropriate based on genuine financial need and the other spouse's ability to pay, before any formula comes into play. When maintenance is on the table and the couple's combined income falls under the statutory threshold, courts generally apply a formula: roughly a third of the paying spouse's net income minus a quarter of the receiving spouse's, with a cap ensuring the recipient never ends up with more than 40% of the couple's combined income. There's also a built-in safeguard worth knowing about: if guideline maintenance combined with child support would eat up more than half of the paying spouse's net income, the court can step outside the standard formula to keep the total obligation workable. Maintenance isn't necessarily permanent either, it typically ends automatically if the receiving spouse remarries, passes away, or begins living with a new partner in a marriage-like relationship.
Maintenance cases rarely come down to a clean formula alone. Courts weigh a long list of factors beyond income, earning capacity, whether a spouse put a career on hold to raise children or support the household, health, age, and the standard of living the marriage established, and any of these can push a case toward deviating from the guideline number. We help clients build the case for what they actually need or push back when a request seems inflated, and we're equally comfortable representing someone who may end up paying as someone who may end up receiving. If a spouse's income looks artificially low, courts now require real evidence tied to actual local job market conditions before income can be imputed to them, not just a theoretical estimate based on their resume, and we know how to build or challenge that kind of evidentiary case.
A maintenance order shapes your finances for years, so it's worth getting right the first time rather than trying to unwind a bad agreement later. We help clients gather the financial documentation courts require, apply the formula correctly when it governs, and build the factual case for a deviation when the standard calculation doesn't reflect the family's real circumstances. We also help clients understand how maintenance interacts with other parts of a divorce, since an increase in maintenance can significantly affect a corresponding child support calculation. If your combined income puts you above the threshold where the formula automatically applies, or your case involves a prior support obligation, we help you understand how the court's broader discretion is likely to play out. Whichever side of the equation you're on, we help you walk into negotiations or a hearing with a clear picture of where you stand.
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Illinois has a built-in limit for this exact situation: if guideline maintenance combined with child support would take up more than half of the paying spouse's net income, the court can deviate from the standard formulas to keep the combined obligation workable. This is worth raising early if you're facing both obligations at once.
Maintenance generally ends automatically if the receiving spouse remarries, passes away, or moves in with a new partner in a marriage-like relationship, without needing a separate court order in most cases. Outside of those triggers, maintenance can still be modified or terminated if there's a substantial change in circumstances, but that typically does require returning to court.
If you believe a spouse's income has been artificially reduced, Illinois courts now require specific evidence tied to real local job market conditions before they can attribute a higher income to that spouse, not just a general assumption based on their resume or work history. This makes building a well-documented case important if you're challenging a claimed income drop.