Are you and the kids other parents both working full time? The reason I ask is that I was paying my ex maintenance and have now stopped – only as recently as last month. I rang CMS and explained my circumstances. I paid my ex the payment every month direct. I have my son between 12-13 nights each month. My ex’s salary is higher than mine, so I proposed that I stopped paying her CS and if she wanted to pursue it she would need to go through CMS, however I would be able to lodge a counter claim – which would result in her paying me. This is what CMS advised me of last month. I proposed this and my ex accepted, albeit begrudgingly. Hope this helps