Is it reasonable to charge my client commission for removal of HMRC tax demand?
Due to non submission covering 3 years they where hit with a £6.2k tax demand that has now been eliminated all bar £900 of penalties due to the returns now being filed and losses in each year. Although I have already invoiced for the corporation tax returns (£400 per return) someone has advised I should have also charged commission on the penalty that has been eliminated by submitting the overdue returns.
I am not sure whether I should or not as have already charged for the completion of each return - does this seem a reasonable thing to do and if so what percentage of the demand should it be - 5% / 10% or some flat fee?
Thanks in advance for responses.