He would end up finding out about it because of the claim on the property.
Also, dependent on who you go with they may want to take his income into account.
You would also find yourself financially restricted for at least 5-6 years.
IVA started March 2011, Completed March 2016 and certificate issued 11 days after final payment. It was not always easy but then some of the best decisions aren't.
He would have to sign the restriction on the house, but you would also have to get to the post first every day, as well as answer the telephone first every time it rings --- a lot of strain on you and on the relationship.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014
Your husband should be advised to seek independent legal advice so he should be informed. It would be best to tell him anyway as I am sure he would be hurt if he found out elsewhere.