July 2026

Tennessee uses the income shares model for child support: combined income, a state schedule, parenting time, and add-ons. Here’s how the math works.

Maryland uses the income shares model under Family Law Title 12. See how the formula, worksheets, and 92-overnight rule work, plus a free calculator.

Arizona calculates child support using the Income Shares Model: the court adds both parents’ adjusted incomes together, finds a Basic Child Support Obligation on a state schedule, and splits that amount between the parents in proportion to what each one earns. From there the number gets adjusted for things like health insurance, childcare, and how

Learn how to modify child support in Virginia yourself — DCSE review vs. DC-630 court motion, costs, deadlines, and the retroactivity rule.

Michigan combines both parents net income, applies a table-based base support amount, then adjusts for overnights via the parental-time offset. Here is how the MiCSF math works.

This article explains, in general terms, how North Carolina’s child support worksheets work. It is not legal advice and does not replace review of your specific facts by a licensed North Carolina family law attorney. Guideline figures, income caps, and forms are revised periodically — confirm current numbers before relying on them in a filing.

Virginia child support is set by one statewide formula under Va. Code § 20-108.2, not a Fairfax-only calculation. See how the DC-637/DC-640 worksheets, the $42,500 income schedule, and the $68 minimum actually work.

Mississippi child support uses a percentage-of-AGI guideline (14%-26%). See how it works, when judges deviate, and try our free calculator.

Child support covers a child’s basic needs: food, housing, and clothing. That is the short answer. The longer answer is that most child support orders also fold in a handful of “add-on” costs like health insurance and work-related childcare, while a whole category of expenses — extracurricular activities, private school, and college — usually sits