A. Child support orders may be modified upon a material change in circumstances which includes, but is not limited to, an increase or decrease in the needs of the child, an increase or decrease in the income of the parents, changes in actual annualized child care expenses, changes in the cost of medical or dental insurance, or when one of the children in the child support order reaches the age of majority or otherwise ceases to be entitled to support pursuant to the support order.

B. Modification of the Child Support Guideline Schedule shall not alone be a material change in circumstances for child support orders.

C. An order of modification shall be effective from the first day of the month immediately following the filing of the motion for modification with the Court, unless the parties agree to the contrary or the Court makes a specific finding of fact that the material change of circumstance did not occur until a later date.

D. The ONCSS shall develop standard modification forms and a standard child support computation form in accordance with the child support guidelines under this chapter.