Renald is both a practicing accountant and lawyer. Renald has been in the accountancy profession since 1979. During 1988 he joined forces with another accountant to form his own auditing practice. In 1990 he merged this practice with another audit firm to form Grant Thornton Malta. At Grant Thornton he occupied the post of staff partner and senior tax partner. After leaving Grant Thornton in 1995 he formed his own firm which he merged with that of David Busuttil in 2002, and thus formed Busuttil & Micallef. At Busuttil & Micallef Renald heads the tax division of the group and is responsible for Compliance. In 2003 Renald graduated as a lawyer from the University of Malta and in the following year became the first Maltese to hold dual warrants to practise both an accountant and as a lawyer. As a matter of fact in 2005 he set-up the law firm Renald Micallef and Associates.
Renald is a fellow of the Chartered Association of Certified Accountants, of the Malta Institute of Accountants, and of the Malta Institute of Taxation. He is also a member of the Institute of Financial Service Practioners, of the Chamber of Advocates and is also a founder member of the Malta Institute of Taxation and is its current President. On the international scene Renald represent the Malta Institute of Taxation by being a member of the General Assembly of the Confédération Fiscale Européenne and also is a founder member of and represents Busuttil & Micallef on the European Tax Committee of Impact International.
Renald’s out of office interest include reading, chess, painting, motor biking and boating.