About SpousalCalc
Free, statute-accurate family law calculators for the English-speaking world — built by a team that has lived through divorce and understands what the numbers actually mean.
Our Mission
Family law decisions — divorce, child support, alimony, property division, marriage finances — sit at the intersection of the most consequential choices people make and the highest emotional stress they will ever experience. The people who need clear answers most urgently are usually the least positioned to pay $350/hour for preliminary calculations.
SpousalCalc.com exists to give those people the math — accurately, privately, free — so they can walk into an attorney's office with informed questions rather than blank panic.
What We Publish
- 290+ calculators spanning divorce settlements, child support, alimony/spousal support, property division, retirement impact, marriage finances, wedding planning, prenups, and family tax.
- All 50 US states — child support and alimony calculators implementing each state's statutory formula, not generic averages.
- International coverage — UK (CMS, MCA 1973, financial remedy, inheritance tax), Canada (Federal Guidelines, SSAG, provincial variations for ON/BC/AB/SK/MB/QC), Australia (Family Law Act 1975, CSAA, super splitting), New Zealand (Child Support Act 1991, PRA 1976).
- Three depth tiers on every calculator — Simple (quick estimate), Advanced (deeper analysis), Professional (full detail with what-if scenarios).
How We Build Calculators
Every calculator on this site follows a four-step construction process. We document this in detail in our Methodology.
- Primary source research. We read the actual statute, court rule, or administrative guideline — not secondary articles. For example: California Family Code §4055(b)(3) after SB 343, New York Domestic Relations Law §240(1-b), UK Child Support Maintenance Calculation Regulations 2012.
- Implementation. We code the formula in JavaScript, with every variable mapped to a specific statutory provision.
- Cross-check. We verify results against official government calculators where they exist (Texas OAG, California DCSS, UK CMS, Services Australia) and against worked examples from legal treatises.
- Documentation. Every page cites its sources, shows the formula, walks through a realistic example, and clearly states when professional advice is required.
Editorial Principles
Our Editorial Policy commits us to five principles:
- Primary sources only. Every legal claim on this site links to the statute, court rule, or government page it comes from. We don't paraphrase secondary summaries.
- Show the formula. If we produce a number, we show the math. No black-box outputs.
- Surface the limits. Every calculator has a visible disclaimer stating it produces estimates, not legal determinations. Judicial discretion, deviation factors, and "consult a professional" guidance are present on every page.
- Update when law changes. Quarterly review cycle. When major reforms land (SB 1416 in Florida 2023, SB 343 in California 2025, Washington EHB 1014 in 2026), we update within 30 days.
- Correct publicly. When we find an error, we fix the calculator, note the correction, and thank the reporter. Email [email protected].
Who We Are
SpousalCalc is built and maintained by a small editorial team with firsthand experience of divorce and family finance decisions across multiple jurisdictions. We draw on legal research from certified family law specialists and Certified Divorce Financial Analysts (CDFAs) for technical review of our most consequential calculators.
We are not a law firm. We do not provide legal advice. We build calculators that help you understand your numbers — which is a precondition for every good legal conversation, not a substitute for one.
Privacy by Design
We built SpousalCalc with a specific constraint: people entering their income, their spouse's income, and custody arrangements into a divorce calculator should never have to wonder where that data goes. The answer is nowhere. Every calculation runs entirely in your browser. We have no server-side database of user inputs because we never collect them. We use Cloudflare's privacy-preserving analytics (no cookies, no personal data). We have nothing to leak because we have nothing to store.
See our Privacy Policy for the technical details.
What We Are Not
- We are not a law firm or a licensed legal services provider in any jurisdiction.
- We do not provide legal, tax, or financial advice.
- We do not take referral fees from attorneys or financial advisors recommended via search results — if we mention "consult an attorney," that link goes to a bar association resource, not a paid directory.
- Our calculators produce estimates; only a court can determine the actual amount owed in your specific case.
See our full Disclaimer for additional context.
How We Stay Current
- Annual rate updates (January). Federal and state tax brackets, IRS inflation adjustments, COLA changes to CSSA caps, CMS rate band adjustments, minimum wage changes affecting low-income adjustments.
- Law change monitoring. We track state legislatures for substantive family law changes (e.g., New York's March 2026 CSSA cap increase from $183K to $193K, California's SB 343 effective September 2025, Washington's EHB 1014 effective January 2026).
- Quarterly verification. Cross-check results against state/federal official calculators to catch drift.
- User corrections. Reports at [email protected] are triaged within 72 hours.
Contact & Corrections
We take accuracy seriously. If you find a calculator that produces an incorrect result, a sources section that cites an outdated statute, or content that is unclear or wrong, please tell us.
Email: [email protected]
For corrections: Include the URL, the inputs you used, the result you got, and the result you expected (with a source if possible). We respond within 72 hours and credit the reporter in our changelog if they want credit.