Alimony / Spousal Support Estimator

ANA›Life Services Authority›National Calculator Authority›Alimony / Spousal Support Estimator

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Alimony / Spousal Support Estimator

Estimates monthly spousal support using income-based formulas and marriage duration guidelines used across many U.S. jurisdictions.

Payer's Gross Monthly Income ($)

Recipient's Gross Monthly Income ($)

Length of Marriage (years)

Alimony Type

Temporary (During Divorce) Rehabilitative Permanent / Long-Term

State Formula Model

AAML Model (30%/20% Rule) Income Shares (40% Combined) Flat Percentage (25% of Difference)

Calculate

function aliCalc() { const payerIncome = parseFloat(document.getElementById('ali-payer-income').value); const recipientIncome = parseFloat(document.getElementById('ali-recipient-income').value); const marriageYears = parseFloat(document.getElementById('ali-marriage-years').value); const alimonyType = document.getElementById('ali-alimony-type').value; const stateFormula = document.getElementById('ali-state-formula').value; const resultDiv = document.getElementById('ali-result');

// --- Input Validation --- if (isNaN(payerIncome) || payerIncome ⚠ Please enter a valid payer gross monthly income.'; return; } if (isNaN(recipientIncome) || recipientIncome ⚠ Please enter a valid recipient gross monthly income.'; return; } if (isNaN(marriageYears) || marriageYears ⚠ Please enter a valid marriage length in years.'; return; } if (payerIncome ⚠ Payer income must exceed recipient income for alimony to apply.'; return; }

const incomeDiff = payerIncome - recipientIncome;

// --- Step 1: Calculate Base Monthly Alimony by Formula Model --- let baseMonthly = 0; let formulaLabel = '';

if (stateFormula === 'aaml') { // AAML Model: 30% of payer's gross - 20% of recipient's gross baseMonthly = (0.30 * payerIncome) - (0.20 * recipientIncome); // Cap: combined income of recipient after support cannot exceed 40% of combined gross const combinedGross = payerIncome + recipientIncome; const cap = (0.40 * combinedGross) - recipientIncome; baseMonthly = Math.min(baseMonthly, cap); formulaLabel = 'AAML: (30% × Payer Income) − (20% × Recipient Income), capped at 40% of combined income'; } else if (stateFormula === 'income_shares') { // Income Shares: support = 40% of combined income minus recipient income const combinedGross = payerIncome + recipientIncome; baseMonthly = (0.40 * combinedGross) - recipientIncome; formulaLabel = 'Income Shares: (40% × Combined Income) − Recipient Income'; } else { // Flat Percentage: 25% of income difference baseMonthly = 0.25 * incomeDiff; formulaLabel = 'Flat Percentage: 25% × (Payer Income − Recipient Income)'; }

baseMonthly = Math.max(0, baseMonthly);

// --- Step 2: Duration Multiplier by Marriage Length --- // Common guideline: duration = 1 year of support per 3 years of marriage (short), // scaling up to open-ended for marriages > 20 years. let durationYears = 0; let durationLabel = '';

if (marriageYears v.toLocaleString('en-US', {style:'currency', currency:'USD', maximumFractionDigits:0});

let totalLine = ''; if (totalAlimony !== null) { totalLine = 'Estimated Total Payout' + fmt(totalAlimony) + ''; } else { totalLine = 'Estimated Total PayoutIndefinite (court-determined)'; }

resultDiv.style.display = 'block'; resultDiv.innerHTML = ` ### 📈 Alimony Estimate

Payer Monthly Income${fmt(payerIncome)} Recipient Monthly Income${fmt(recipientIncome)} Income Difference${fmt(incomeDiff)} Formula Model${formulaLabel} Base Monthly Support${fmt(baseMonthly)} Alimony Type Adjustment${typeLabel} Estimated Monthly Alimony${fmt(monthlyAlimony)} Estimated Annual Alimony${fmt(annualAlimony)} Estimated Duration${durationLabel} ${totalLine}

⚠ This is an estimate only. Actual awards vary by judge, jurisdiction, and individual circumstances.

`; }

#### Formulas Used

AAML Model (American Academy of Matrimonial Lawyers): Monthly Alimony = (30% × Payer Gross Income) − (20% × Recipient Gross Income) Capped so recipient's post-support income ≤ 40% of combined gross income.

Income Shares Model: Monthly Alimony = (40% × Combined Gross Income) − Recipient Gross Income

Flat Percentage Model: Monthly Alimony = 25% × (Payer Income − Recipient Income)

Duration Guidelines: <3 yrs → ~6 months | 3–7 yrs → 1 yr per 3 yrs married | 7–15 yrs → 40% of marriage length | 15–20 yrs → 50% of marriage length | 20+ yrs → potentially indefinite

Alimony Type Modifier: Temporary = 100% | Rehabilitative = 85% | Permanent = 100%

#### Assumptions & References

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References

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