Why not just make a proper determination of their IR35 status and keep them then, and structure their terms as outside IR35? Unless you are saying they were inside IR35 all along...
I'm saying its a global megabank and senior though I am, I'm structurally far too junior to have any say in such matters.
The fact is the law on these changes won't settle for a couple of years while cases make their way through the courts setting precedents, and in the mean time the bank continues to accrue exposure to back taxes. That may be a small risk, but all risks come with prices attached and RO's to manage them. Ours has decided it's less of a risk and cost to the business to do away with all our contractors across the board than the cost of capital to hold cover in reserve. That I may disagree with that is no more important to the people making that decision than if you disagree with it as an outsider.
It's a harsh reality for me & my guys, but it is what it is.