“(1) A tribunal may direct that a party or applicant shall pay to the other party to the appeal or application – (a) within such period as it may specify such sum as it may determine on account of the costs of such other party of and incidental to and consequent upon the appeal or application; or (b) the costs of such other part of and incidental to and consequent upon the appeal or application to be taxed by a … judge …”
“(1) The Tribunal may only make an award in respect of costs (or, in Scotland, expenses – (a) under section 29(4) of the 2007 Act (wasted costs); (b) if the Tribunal considers that a party or their representative has acted unreasonably in bringing, defending or conducting of proceedings; or (c) if – (i) the proceedings have been allocated as a Complex case under rule 23 …; and (ii) the taxpayer … has not sent or delivered a written request to the Tribunal … that the proceedings be excluded from potential liability for costs or expenses under this sub-paragraph.”
“An order for costs may only be made if, and to the extent that, an order could have been made before the commencement date.”