Sources & Methodology

How we build and check calculators

• Primary sources only. Each calculator cites the statute, court rule, administrative rule, or official schedule it implements, not a secondary summary.
• Tested against the source. Every state has automated regression tests whose expected values come from the cited schedule or official worksheet.
• Gaps disclosed, not hidden. Where a guideline has a rule we don't model yet, such as a rare deduction or deviation, we list it on that state's page.
• Monitored for changes. We regularly check each cited source for amendments, new schedules, and updated figures like tax brackets and poverty guidelines.

Found something that doesn't match your state's official worksheet? Tell us, and we'll check it against the primary source.

Sources by state

States without a live calculator

For the remaining states, our pages summarize the guideline model and link to the state's official resources, but we don't yet offer an interactive calculator. See the full list on our child support calculators page.