Abstract This article examines how a professional trustee charging remuneration to the trust is approached in respect of non-charitable trusts. It reminds the reader of the legal basis on which a professional trustee is able to charge for its fees, considers certain specific features of a professional trustee’s remuneration and examines the general approach of the courts to assessing a professional trustee’s charges. It also looks at the relative advantages and disadvantages of investigating a professional trustee’s charges before or after the resignation of a trustee and the winding up of a trust.