I've had to go through a long court battle to see my son due to my ex-wife being very difficult. Days were ordered in court and although tough it was workable. I've always paid CSA directly onto her account for my son. She has now started to be difficult again. Stopping me taking my son on his first over seas holiday by with holding his passport and stopping school trips ect. She is now demanding I pay for school uniform and school trips. It's a long sad story which I won't boor you with. But I feel her actions are now starting to effect my sons development. She even takes his pocket money off him which I give him every week. Anyway My question is can I deduct school trips from my CSA payments ?? Many thanks in advance. From a very disappointed dad. Trying to do the best for his son.