Types of alimony, duration, modification, tax implications, and how courts determine amounts.
Illinois recognizes 4 types of spousal maintenance: fixed-term, indefinite, reviewable, and reserved. Learn the 33.3% formula and duration multipliers for 2026.
Illinois spousal maintenance uses a 33.3% minus 25% formula capped at 40% of combined income. Calculate your 2026 alimony amount and duration.
Illinois alimony uses 33.3% payor income formula while child support follows income shares model. Learn key differences, calculations, and tax treatment.
Yes, men can get alimony in Illinois. The law is gender-neutral under 750 ILCS 5/504. Learn the formula: 33.3% of payer's income minus 25% of recipient's income.
Illinois temporary maintenance uses a statutory formula: 33.3% of payor's net income minus 25% of payee's. Filing fees run $289-$388.
Illinois alimony lasts 20%-100% of the marriage length using statutory multipliers. Marriages over 20 years may receive indefinite maintenance under 750 ILCS 5/504.
Use our Illinois alimony calculator guide to estimate spousal maintenance. Illinois uses a 33.33%-minus-25% net income formula with a 40% cap for incomes under $500K.