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. There isn't a specific formula for calculating alimony in North Carolina, and the calculator above should be considered a rough estimate.Information about child support, filing, court process, enforcement and more. Contents. 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. These guidelines are used to calculate child support orders based on the ability of parents to pay and the needs of the children. Our tool will calculate how much spousal support a judge may order. Complete the fields to calculate and estimate. Use this worksheet when one parent (or a third party) has primary physical custody of all of the children for whom support is being determined. The amount of child support you pay or receive for children of your relationship. After considering the listed factors above, a court will assign one spouse financial responsibility for the other.