The Guide offers instructions and worksheets that will help explain how to calculate child support amounts. Sodoma Law helps both prospective alimony payors and recipients in Charlotte, Mecklenburg County, and throughout western North Carolina.Use this worksheet when (a) Parents share custody of all the children for whom support is being determined, or (b) when one parent has primary physical custody. If you are curious about how your income will be calculated and used to make decisions regarding child support and alimony payments, learn more below. This calculator determines the value of child support to be paid based on income, days the children spend in your custody, and other child-related expenses. Information about child support, filing, court process, enforcement and more. Contents. Use our child support calculator to provide an estimate of the child support payments the court may order you to pay in NC.. Call us today at 919-829-1006. Child support payments don't have to be a mystery. Our tool will calculate how much spousal support a judge may order. Complete the fields to calculate and estimate.