It was "disturbing", the tribunal said, that the only evidence that Wright paid back some of his clients their IRD refunds was after a complaint was made to the institute.
"The tribunal finds that the member's conduct - the misappropriation of at least $280,000 over approximately 18 months and his admission that he had been taking client monies over approximately eight years - constitutes misconduct in a professional capacity," its decision said.
When deciding on the penalty, the tribunal said it was of the view that "dishonesty of this type is incompatible with membership of the institute".
"The public and the profession are entitled to expect that members conduct themselves with honesty and integrity".
As well as removing his name from the institute's register, the tribunal ordered him to pay costs of $56,853.
No-one answered the door when the Herald visited an address associated with Wright on the Companies Office.