Just a quick note on the 60% of disposable income issue - this is not yet being proposed, but is part of the new IVA protocol which should now be confirmed by the end of August. So it will only affect new IVA's, but may form some form of precedence for existing cases as and when the time to raise the money arises.
Your IP probably based the £20k on an 85% loan to value ability in the final year, with a small increase in property value to make up the difference. Are you tied into the £20k or did you get a counter modification.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk