Sorry g_r
The CSA are a creditor who stand completely outside of all insolvency proceedings, and if they reassess your child maintenance then this may well affect your IVA.
The CSA new rules are based upon the following:-
15% of net salary for one child
20% of net salary for two children
25% of net salary for three or more children
You ought to therefore be able to calculate what you should actually be paying to your ex-wife, and determine then whether you will be able to afford your IVA payments.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
View my IVA blog at:
http://melaniegiles.blogs.iva.co.uk