Keith Williams

Keith Williams is a U.S. military veteran, an experienced pro se litigant, and the author of Navigating Child Support, a nationwide guide to child support modification. He writes plain-English walkthroughs of state child support formulas and court forms for parents who represent themselves.

How Is Child Support Calculated in Arizona? The Income Shares Formula Explained

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

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