Illinois Alimony / Spousal Support Calculator
Estimate alimony/spousal support in Illinois. Calculate monthly payments based on income, marriage length, and Illinois guidelines.
How This Calculator Works
Calculation methodology and assumptions
Illinois alimony calculations consider the income difference between spouses, marriage duration, and family circumstances. Common guidelines use 30-35% of the income difference (25% if there are minor children, since child support is also paid). Duration is typically proportional to marriage length: short marriages (<10 years) get 3-5 years of support, medium (10-20 years) get 5-15 years, and long marriages (20+ years) may receive permanent/indefinite support.
Key State Information
Illinois uses judicial discretion in setting alimony, considering multiple factors. Note: Alimony is no longer deductible for federal taxes (post-2018 TCJA).
Frequently Asked Questions
How is alimony calculated in Illinois?
Illinois considers factors like marriage length, each spouse's income and earning capacity, standard of living during marriage, age and health, and contributions to the marriage. Illinois has advisory formulas, but judges retain discretion.
How long does alimony last in Illinois?
Duration depends on marriage length. Short marriages (under 10 years) typically receive 3-5 years. Long marriages (20+ years) may receive support for half the marriage length or indefinitely. Illinois generally ties duration to the length of the marriage.
Is alimony tax deductible in Illinois?
For divorces finalized after December 31, 2018, alimony is NOT deductible by the payer and NOT taxable to the recipient for federal tax purposes. Some states may have different rules for state taxes.