Alimony Calculator

What the Alimony Calculator does

There is no single national alimony formula; states and courts use their own rules. One widely cited reference is the American Academy of Matrimonial Lawyers (AAML) guideline: 30% of the payer’s gross income minus 20% of the recipient’s, limited so the recipient’s total does not exceed 40% of combined income, with duration based on marriage length.

It also works as a alimony spousal support calculator or a spousal support calculator.

Formula

• Support = 30% of payer income − 20% of recipient income
• Cap: recipient income + support ≤ 40% of combined income
• Duration = marriage years × 0.3 (0–3 yrs), 0.5 (3–10), 0.75 (10–20), indefinite for 20+

Worked example

Using the starting values in the calculator above:

How to read the result

Many states use their own statutory formulas or wide judicial discretion; actual awards can differ greatly from this guideline.

Tax treatment changed in the US for divorces after 2018: alimony is no longer deductible by the payer or taxable to the recipient under federal law.

General information only, not legal advice. Laws and court practice vary by jurisdiction; consult a qualified lawyer.

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