There is no definitive answer to this question since it will vary based on each individual case. However, according to the National Conference of State Legislatures, the average amount of child support that fathers pay is around $500 per month. This number can fluctuate though depending on how many children the father has and his income. For example, if a father has three children and makes $3,000 per month, he would likely have to pay more in child support than a father who only has one child and makes the same amount of money. Ultimately, the amount of child support that a father pays will be determined by state guidelines and court orders.