hello welcome to the forum, it all depends on what is in your proposal , the usual clause is 50% of any overtime and bonus or windfall although some have the provision the first £500 is theirs,it does not reduce the overall term as it is in the ip's interest to return as much as possible to the creditor from the debtor, if you don't declare what you have received you could be in breach of contract and possibly found out at your reviews as the ip requests your bank statements, an iva is not away of hiding any surplus cash that you may obtain, it is a long hard struggle for 5 yrs for those willing to pay as much back as possible
kerri
another thing to add is although you may be considering an iva it is up to your creditors if they allow one you need to have 75% of the vote to be accepted, are you happy that you know what an iva entails?
Please view my blog at:
http://scaredkez.blogs.iva.co.uk/