One state at a time, done right
Child support calculators by state
Every state sets child support its own way, and a generic calculator cannot honestly claim to compute yours. So we build one state at a time: each page implements that state's actual statute, shows every step of the arithmetic, and cites its sources. A page does not ship until its numbers are verified against the state's own published law.
§ 1 · The index
Live state calculators
A plain-language explainer with worked income examples and tax treatment.
Every state page is built from that state’s own statute or schedule and verified against the source before it ships. No page goes live with unverified numbers.
§ 2 · Three models
How states differ
Roughly 41 states use an income-shares model: both parents' incomes are combined, a guideline table sets the total obligation, and each parent owes a share proportional to their income. About nine states — Texas among them — use a percentage-of-income model based on the paying parent's income alone. A few, like California, use their own algebraic formula. The differences are large enough that a number computed under the wrong state's rules is not an estimate; it is a guess.
Until your state has a dedicated page here, the general calculator gives a clearly-labelled approximate range — and your state's official calculator gives the binding figure.
§ 3 · The method
Why so slow?
Because the alternative is fabrication. Most "50-state" calculators run one formula behind fifty dropdown options. Each state page here requires reading the statute, transcribing its schedule or formula, testing against the state's own calculator, and citing every constant. That takes time per state — and it is the entire reason to trust the number that comes out.
Legal data verified — July 2026