Enter Illinois income and marriage details.

Illinois guideline maintenance calculator

The same period applies to all four income fields.

Spouse who would pay alimony

Spouse who would receive alimony

Which net-income figure should I use?

Use Illinois statutory net income, not automatically your paycheck deposit. This calculator does not calculate tax or permitted deductions. See the official income-definition source on the page below.

Your figures are not sent to the site. Clear all also removes saved comparisons.

Your result

Your Illinois guideline estimate will appear here.

Enter your figures to see a conditional illustration and the calculation behind it.

  • Monthly and annual amount
  • Income-share limit explained
  • Guideline duration, where supported

No number is shown until you calculate. A result is not a determination of entitlement.

Figures stay in this page. No account required.Guideline illustration only. Not legal advice.