The presumptive maximum child support is calculated on net resources of $7500.00 per month upon which to apply the guideline child support calculation. In order to exceed the presumptive maximum net resources calculation on amounts that exceed the $7500.00 per month, you would have to show that the actual needs of the child exceed the guideline child support. In other words, if dad has net resources of $15,000.00 per month, the actual needs of one child, for example, would have to be proven and exceed the presumed figure of $1500.00 (20% of $7500) in order for the court to award more than the $1500.00 per month in child support. It is difficult to do so in Dallas area counties. Texas Family Code 154.125, 154.126, effective September 1, 2007.