Minnesota does not use a system that is very fair. It is first, weighted in favor of the CP. What that means is CS goes up a certain amount if the NCP's income goes up, but goes down only a small portion of that amount if the CP's income goes up the same amount. In addition, CS is reduced only 10% if you have the kids up to 45% of the time. If you want a fairer system, look at CA's.