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Alimony & spousal support calculator
State statutory formulas and court guidelines — plain language, instant results.
Your numbers never leave your browser.
Alimony & spousal support calculator
Your results
Select a state and enter both incomes and marriage length to see your estimate. Your numbers never leave your browser.
⚠ This estimate is for planning purposes only. It is not legal advice, not admissible as evidence, and not a prediction of what any court will order. Consult a licensed family law attorney for guidance specific to your situation.
How it works
Select your state
Each state uses a different legal term — spousal support, spousal maintenance, or alimony. We apply the correct statute and formula automatically.
Step 2Enter incomes & marriage length
Gross income figures (payor and payee), years married, and whether minor children are involved. All inputs stay in your browser — nothing is sent to a server.
Step 3Read your estimate
See the estimated monthly amount, duration range, the statute it's based on, and a plain-English explanation of what the number means — and what it doesn't.
Statutory guidelineNew York — DRL §236(B)(5-a)
NY uses a mandatory formula: 30% of payor income minus 20% of payee income, capped so the payee doesn't exceed 40% of combined income. One of the few states with a true statutory guideline.
Statutory guidelineIllinois — 750 ILCS 5/504
Illinois applies a net-income formula with a statutory duration table. Courts must explain in writing any deviation — making IL one of the most formula-driven states in the country.
Always rememberPlanning tool — not legal advice
Only 3 states have mandatory formulas. For most states this is a benchmark range only. Always consult a licensed family law attorney for guidance specific to your situation.
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All 50 states. Each page uses the correct local legal term and explains the statute.