Does the father still needs pay child support if both parents agree for the father to give up his rights?

First question why does this question show up under California if it is an Arizona question.I think every state is same child support order remains in effect unless the parties put something I writing I would suggest a stipulation that support is reduced to zero effective whatever date you agree on and file it with the court

This is a common question. The answer is NO. Only a court can legally determine that a father does not need to pay support. And, if the mother goes on welfare, the State will come after the father for support. To do this, you should contact an attorney to have the agreement approved by a judge. Do not try to do this on your own.