Illinois Alimony Calculator

Calculate maintenance (alimony) payments according to Illinois statutory guidelines

Financial Information

Payor's Gross Annual Income ($)

Payee's Gross Annual Income ($)

Marriage Duration (years)

Children / Dependents

Has children/dependents

Note: Child support is calculated separately from maintenance

Existing Child Support Obligation ($)

Court Deviations / Adjustments (%)

Income Cap Check

Apply Illinois 40% income cap rule

Tax Consideration

Payor Income: -

Payee Income: -

Marriage Duration: -

Annual Maintenance: -

Monthly Payment: -

Duration of Payments: -

Monthly Alimony Payment

Enter financial information to calculate

Annual Maintenance

per year

Payment Duration

years

No Maintenance 0% Maximum

< 5 years 0.20 × marriage length

5–6 years 0.24 × marriage length

7–8 years 0.28 × marriage length

9–10 years 0.32 × marriage length

11–12 years 0.36 × marriage length

13–14 years 0.40 × marriage length

15–16 years 0.44 × marriage length

17–18 years 0.48 × marriage length

19–20 years 0.52 × marriage length

20+ years Court discretion