Monthly Child Support Calculator. This calculator provides an estimate for a single source of income.Using the Basic Child Support Schedule and the parent's individual income on Line 14, determine if the parent's obligation is located in the. The Child Support Division in the Office of the Attorney. General assists parents in obtaining the financial support necessary for children to grow up and. For guidance in using this calculator, please see the JFS 07766 Ohio Child Support Guideline Manual. The Ohio Child Support Calculator will provide an estimate of the support obligations that may be included in a court or administrative child support order. The American Community Survey (ACS) helps local officials, community leaders, and businesses understand the changes taking place in their communities. As the official charitable partner of the National Park Service, we provide resources for the national parks. Support this uniquely American idea.