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Legal

Alimony Calculator

Estimate monthly alimony using income shares and duration rules.

Estimate Spousal Support

Adjust guideline percentages and caps for a planning-only estimate.

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What this calculator does

Alimony, also called spousal support or maintenance, is a court-ordered payment from one spouse to another following divorce or separation. The purpose is to maintain the lower-earning spouse's standard of living and help them achieve financial independence, especially after years of career sacrifice. Alimony differs from child support (which covers children) and property division (splitting marital assets). Factors determining alimony include income disparity, marriage length, age, health, earning capacity, and contributions to the higher-earning spouse's career. Alimony can be temporary (durational) lasting a specific period, or permanent (rare, typically only in long marriages). Understanding how courts calculate alimony is essential for divorce planning and negotiation.

How it works

Courts typically use income-based formulas, though these vary significantly by state and jurisdiction. Common approaches include percentage-of-income models (e.g., 30% of the paying spouse's income minus the recipient's income) or duration-based formulas where temporary alimony lasts 30-50% of the marriage length. The paying spouse's gross income (minus taxes, child support, and existing alimony obligations) is compared against the recipient's income and earning capacity. Courts consider job skills, employability, and retraining needs. Judges have discretion to adjust amounts based on individual circumstances. Alimony terminates if the recipient remarries, cohabits, or achieves self-sufficiency, or upon the payer's death unless otherwise ordered.

Formula

Basic Formula (varies by state): Alimony = (Payer's Gross Income - Recipient's Gross Income) × Percentage Factor (typically 20-30%). Duration = Marriage Length × Duration Factor (typically 30-50% for temporary alimony). Adjusted Amount = Basic Amount - (Child Support Obligations) - (Other Alimony Obligations).

Tips for using this calculator

  • State law varies dramatically; formulas in your state may differ significantly from examples provided
  • Document earning capacity realistically; courts expect the lower-earning spouse to pursue reasonable work
  • Consider tax implications; alimony is tax-deductible for payers and taxable income for recipients (under pre-2019 rules)
  • Negotiate carefully; temporary alimony payments are much lower than permanent, and duration varies widely
  • Review periodically; most alimony orders allow modification if circumstances change significantly (income, employment status)

Frequently asked questions

How do courts calculate alimony, and what factors influence the amount?

Courts use state-specific formulas based primarily on the income disparity between spouses, the marriage's length, and the recipient's earning capacity. Factors include age, health, education, job skills, childcare responsibilities, and contributions to the higher-earning spouse's career. Most states calculate temporary alimony as a percentage of the income difference (often 20-30%), adjusted for child support and other obligations. Judges have discretion to deviate from formulas based on specific circumstances.

What's the difference between temporary and permanent alimony?

Temporary (durational) alimony lasts for a specific period, typically 30-50% of the marriage length, ending when the recipient becomes self-sufficient. Permanent alimony (now rare and controversial) lasts indefinitely until the payer's death, recipient's remarriage, or significant income change. Most modern courts prefer temporary alimony to encourage self-sufficiency. Long marriages (15+ years) more often result in permanent or longer-duration alimony.

When can alimony be modified or terminated?

Alimony typically terminates if the recipient remarries or cohabits, or upon the payer's death. It can be modified if circumstances change significantly, such as job loss, substantial income increase or decrease, retirement, or disability. The requesting party must petition the court to modify; orders don't automatically adjust with inflation unless the original order includes cost-of-living adjustments (rare).