Child Support Guideline Calculators — TCB Law<br>Open-source · MIT licensed · No signup, no paywall<br>Child support,<br>calculated right.<br>Every line of math cites the rule that authorizes it.<br>The worksheet is filing-ready. The code is public.<br>Pick a state to begin.
AKMEVTNHWAIDMTNDMNWIMINYMARIORNVWYSDIAILINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCHIOKLAMSALGATXFLAvailable nowComing soonPlannedBeing verified
Hover or focus a state tile for details. 7 calculators are live. 0 more across the Southeast are next.
Available now (7)<br>Alabama — Income Shares Model(Ala. R. Jud. Admin. 32)<br>Arkansas — Income Shares Model(Ark. Sup. Ct. Admin. Order No. 10)<br>Florida — Income Shares Model(Fla. Stat. § 61.30)<br>Georgia — Income Shares Model(O.C.G.A. § 19-6-15)Being verifiedGeorgia's parenting-time adjustment is being corrected — it disagrees with the State's official worksheet by a wide margin. Results in cases with court-ordered parenting time may be inaccurate. Do not rely on this result until this banner comes down.
Louisiana — Income Shares Model(La. R.S. § 9:315 et seq.)Being verifiedLouisiana updated its support schedule for 2025; we just caught that ours was out of date and are re-verifying every figure against the State's calculator. Numbers may still shift slightly.
Mississippi — Statutory percentage guideline(Miss. Code Ann. § 43-19-101)<br>Tennessee — Income Shares Model(Tenn. Comp. R. & Regs. 1240-02-04)
Coming soon (0)
Planned (43)<br>Alaska, Arizona, California, Colorado, Connecticut, Delaware, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.
Why this exists<br>Tennessee's child support calculation lives inside a macro-enabled Excel file that not every computer can run. Mississippi's calculation is mechanically simple but rarely produces a shared worksheet a chancellor can read. Both states have good law on the books. Both have practitioners who do excellent work. Neither has tooling that matches the law.<br>These calculators are an attempt to close that gap. Every dollar number traces back to the rule that authorizes it. Every worksheet is structured the way a chancellor expects to see it. Every line of code is open for anyone — practitioner, party, judge, academic, or competing firm — to audit, fork, or improve.<br>The project is maintained by TCB Law, PLLC, but it is not a TCB Law product. Civic legal infrastructure should not be proprietary. If a Mississippi chancery practitioner finds the deviation worksheet inadequate for cases they handle, or a Tennessee family lawyer catches an interpretation of the rules that needs correcting, file an issue and we'll fix it. The calculator improves through community input, not through gatekeeping by any single firm.