That's great in theory but doesn't mean it will fly. If they can track that they shifted money/income it doesn't matter, the arrears will stack up. And again, it doesn't matter even if the mother says no or wants it reduced. I went through a big thing with child support when I wanted it reduced at one point. Basically parents are told (the mother as well) that it isn't up to them, the judges will intervene and change the support to reflect what it should be based on income history. They basically say that you are abusing/neglecting your child if you waive or reduce support even temporarily because the child deserves it. That may be because there were those who dodged it, hid income, etc. Whatever the case, it's not as simple as one may think. He (and others) may be able to split their assets and then go to "retired/no income" or a very limited amount and then have a reduced amount of support. But there really isn't a way to dance it. And for those who have multiple kids with different moms and/or marriages, it's much worse. This is why it's so important to be smart about who you choose to have kids with.