Does Age make a different on how much child support a non custodial parent will have to pay. I have a 14 and a 16 year old.

It can depend on states, and often in addition to child support, there are other money awarded, for things like day care for younger kids, health insurance. Or for older children, college costs.

So age for pure child support normally does not make a difference, other things that can be added may

No.