Child support is a legal obligation that a biological parent has for providing for the basic living expenses of a child: food, clothing, shelter, health care and education. It is a noncustodial parent's financial obligation to make monthly or periodic payments to a custodial parent.
The law treats parental responsibility and child maintenance as being completely separate. An unmarried father who does not have parental responsibility still has a duty towards his child to provide child support maintenance.
If you have shared care for at least 52 nights a year, you don't need to pay any child maintenance.
Ordinarily child maintenance is paid directly to the primary carer. However, if you have a family based arrangement, you can make child maintenance payments directly to your child, but only if both parties agree.
On the basic rate, if you're paying for: one child, you'll pay 12% of your gross weekly income. two children, you'll pay 16% of your gross weekly income. three or more children, you'll pay 19% of your gross weekly income.