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Estimate monthly spousal support using income disparity and marriage length. Educational use only.
Alimony is a court-ordered payment from one former spouse to another following divorce. The amount and duration depend on income disparity, marriage length, the established standard of living, and state-specific guidelines.
Educational Estimate Only: Alimony is determined by courts based on many state-specific factors. This calculator uses a common guideline formula for educational purposes only. Consult a licensed family law attorney for your specific situation.
Estimated Monthly Alimony
| Marriage Length | Typical Duration | Notes |
|---|---|---|
| 0–5 years | < 2 years | Temporary/rehabilitative support common |
| 5–10 years | 2–5 years | ~1 year per 3 years of marriage |
| 10–20 years | 5–10 years | Longer-term support, reviewable |
| 20+ years | Indefinite | Permanent support possible |
Guidelines vary significantly by state. Courts have broad discretion.
Formula
Monthly Alimony ≈ (40% × Higher Earner Net Monthly Income) − (50% × Lower Earner Net Monthly Income)Higher Earner Net Monthly = Higher-earning spouse's monthly income after estimated taxes
Lower Earner Net Monthly = Lower-earning spouse's monthly income after estimated taxes
40% / 50% = Common guideline percentages used in alimony estimation formulas
Worked Example
Higher earner $8,000/mo net; lower earner $2,500/mo net
Did you know? In 2019, the Tax Cuts and Jobs Act eliminated the federal income tax deduction for alimony payments on divorce agreements signed after December 31, 2018. This fundamentally changed alimony negotiation strategy — under the new rules, alimony payments are not deductible by the payor and not taxable income to the recipient (source: IRS Publication 504).
Sources
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