I am in the process of setting up child maintenance payments from my ex. He has the kids 5 nights a fortnight. Okay, so that would be 2.5 hours a week. But he is also counting the school holidays which we will share 50:50. When this is taken into account across a year it bumps up the days to 3 and means I get abut £110 less per month. How is it calculated? He is a mean bast*rd who will do what he can to get out of paying. I have finally got him out of the house three years after telling him the marriage was over. At present I am trying to work it out between us but my gut feelings tells me to hand it over to the CSA as he is a very difficult person, very controlling. So- should holidays be taken into account? Thanks for your thoughts