In New York and New Jersey, the amount of child support and the duration of child support is regulated by statute. There’s a specific formula to how much you should pay in New York per child based on your income. There is also in New Jersey a specific formula to calculate what you should pay based on your income. Your spouse’s income counts as well. They apportion the liability between the two of you, but everyone who is a noncustodial parent must pay child support to the custodial parent.