My ex has applied to reduce payments after his payments increased following a new job. The reduction is £60 per month and the only info I have about the grounds for this is additional costs he has reported in caring for his child. What could this be for? I can only think it might be petrol to drive to school although my son has been in the school for nearly 3 years. His Dad pays for swimming and I pay for drama so I I don't think it could be extra-curricular costs. How do I challenge this? The £60 is a huge deal at the moment, particularly given my gas and electric bill has gone up by £140 a month. Can cost of living increases be taken into account by CMS? Thanks