Chris Brown has had it with his baby mama.

Nia Guzman is demanding 15K a month in child support for their one year old daughter Royalty, and Brown believes the $2,500 a month he's giving her is fair.

Breezy wants to take it to court, because he thinks the judge will side with him and his numbers. But before doing so, he needs to establish paternity of Royalty.

Once he is ruled the dad he has the legal right to fight Guzman on both support and custody. In addition to their beef about the monthly payments, Brown says Guzman has been keeping Royalty from him and wants a judge to establish clear custody guidelines.