i just done yearly review and my current iva company have just doubled my montly payment
my outgoings are same but because i had a pay rise they doubled it
As you had a payrise then your payments would increase if your outgoings are the same.
If you're not happy with it then query it with them as you should be allowed to retain some of your rise.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk
As kallis3 says you should be able to retain some of the pay rise generally based on the 10/50/50 rule.
If your outgoings had increased this would have impacted on the amount they could take.
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.
Usually you get to keep 55% of the increase in disposable income. Ask them for a breakdown of their calculations and check your terms re the 10/50/50 rule as LNE says.