CSPMTL 75 (Calculation of the Support Obligations)
Child Support Program Manual Transmittal Letter No. 75
June 24, 2013
TO: All Child Support Program Manual Holders
FROM: Michael B. Colbert, Director
SUBJECT: Calculation of the Support Obligations

The Office of Child Support (OCS) has amended the following rule. The rule has been reviewed in order to comply with Amended Substitute Senate Bill Number 337 (129th G.A.).

Amended RuleAmended Rule TitlePrior Effective Date of RuleEffective Date of Amendment
5101:12‑45‑10Calculation of the Support Obligations.3/1/20097/1/2013
This rule describes the process by which the child support enforcement agency (CSEA) shall use the basic Ohio child support guidelines (hereafter "guidelines") schedule as set forth in sections 3119.01 to 3119.05 of the Revised Code when calculating or adjusting the child support and cash medical support obligations contained within a child support order.
Changes to the rule include: updating the criteria to be considered when a CSEA imputes income for support orders; the ability of a CSEA to disregard a parent's additional income when that income is generated to support additional family members; and consideration for existing support orders when an additional child is born to the same parents.
This rule is authorized by ORC section 3125.25 and amplifies ORC sections 3119.02 and 3125.03.


When the CSPMTL is published, the CSPM will be updated as follows:

  • An amended rule will be inserted and the previous version will be moved to the OAC Archive section of the eManuals.
  • A no change rule will continue with the same effective date.
  • A rescinded rule will be moved from the CSPM to the OAC Archive section of the eManuals.

The rules and forms in the CSPM can be accessed at:



Paragraph (I)(1) of OAC rule 5101:12-1-01 states that, whenever a program change requires modification of local procedures, the CSEA is required to revise its internal procedural handbook and submit the revision to OCS within thirty days of the revision. The CSEA should carefully review the amended rules contained in this CSPMTL to determine whether they require the CSEA to update its internal procedural handbook.