Loading the page...
Preparing tools and content for you. This usually takes a second.
Preparing tools and content for you. This usually takes a second.
Fetching calculator categories and tools for this section.
Free alimony calculator to estimate monthly support, duration, and realistic payment ranges. This calculator uses income-difference modeling for divorce planning and pre-mediation budgeting. Explore more legal tools in Legal & Compliance.
Last updated: April 13, 2026
Need custom legal calculators for your firm? Get a Quote
Monthly Estimate
$1,563
Estimated Duration
7.2 yrs
Low Range
$1,328/mo
High Range
$1,797/mo
Formula Used
(120,000 - 45,000) × 25% × 1.00 ÷ 12
Estimated monthly support is $1,563 for approximately 7.2 years.
Important:
Best for
Budget preparation
Helps both spouses forecast post-divorce monthly cash flow.
Best for
Settlement options
Quickly test negotiation ranges before drafting settlement terms.
Best for
Faster legal review
Gives a practical baseline to discuss strategy with counsel.
Best for
Duration analysis
Models support length changes as marriage length increases.
Best for
Modification strategy
Estimate changes before filing a support modification request.
Best for
Case documentation
Provides a clear rationale for planning assumptions in filings.
For payer income of $120,000, recipient income of $45,000, and a 12-year marriage:
Estimated Monthly Support
$1,563
Estimated Duration
7.2 years
The calculator estimates support using income difference, a support percentage, and a jurisdiction profile multiplier. It then projects duration from marriage length. This creates a practical range for planning discussions before legal review.
Monthly Alimony = (Payer Income - Recipient Income) × Base % × State Factor ÷ 12Base percent defaults to 30% (or 25% in child-heavy scenarios), while state factor models conservative and higher-support jurisdictions.
Shows estimated duration bands by marriage length
Need related support planning? Try our Florida child support calculator and legal deadline calculator.
Get Custom Calculator for Your PlatformResult: Estimated support is about $1,563 per month for approximately 7.2 years.
Planning range: roughly $1,328 to $1,797 per month.
Share it with others planning divorce support scenarios
Suggested hashtags: #Alimony #SpousalSupport #Divorce #FamilyLaw #Calculator