How does child support work? Asking for a sibling. His ex came back into his life again bc his son started asking about his dad. He met my brother and likes him. So now the mom says she wants $500 a month. He already pays $400 a month for another child and he has no issues paying the $500 for another but he will definitely be broke after that and rent and all that. I asked him why not go to court. He said the court wouldn’t care about the other child and he’d probably pay more than $500 so that’s the better deal for him. Curious if anyone has any experience or information that could help him.