Hi @david_g
If you are invoicing the client yourself, with the higher fee (with the additional mark up), as far as your accounts are concerned the income is yours.
From what you’ve described, it sounds similar to an affiliate or referral fee is being paid to the person who told the client to go direct. In this case, you may find the below topic helpful:
We’ll leave this thread open for other users to add their comments, as I’m sure there are other users doing something similar.
I hope this helps.