In Wisconsin, there are three main factors that are taken into account when determining how much child support a parent must pay. These factors include the parent's income, how much time a child spends with each parent and whether or not a parent is supporting other children. In the event that a parent has an exceptionally high income or a lower than average income, a court may modify a child support order.
For most cases, there are guidelines that judges will use to determine how much support a parent must pay. Under these guidelines, a parent with one child will pay 17 percent of his or her income to support that child, and this can range up to 34 percent for five or more children. This means that a parent who makes $1,500 a month would pay $255 to support one child. Someone with an income of $4,000 per month would pay $1,360 to support five children.