Peter is the Owner and Director of Callagher & Co Chartered Accountants Limited, based in Grafton, Auckland. His clientele extends across New Zealand and internationally including China, United Kingdom, Germany, USA and South America.

Like many young accountants Peter commenced his involvement and interest in the profession through employment at the Inland Revenue. After four years he made a move into Banking and Finance working for National Australia Bank, Countrywide Bank and AVCO Finance and Insurance.

After ten years in this sector he decided his future lay back in accountancy and resigned full time employment and went back to tertiary studies to obtain formal qualifications.

Those qualifications being:
CA, CPA, Senior Member, New Zealand Trustees Association (NZTA)
MBS (Hons); BBS; Dip Prof. Acct. Grad Dip Higher Ed. ADV. Dip Mgmt;

He was heavily involved in lecturing and this involvement in the tertiary sector has, in the past, resulted in Peter being involved as a facilitator and marker to the PREP division of the New Zealand Institute of Chartered Accountants (NZICA, Now CAANZ)).

He has operated numerous successful businesses and has served as Treasurer, Auditor and Chairman of several local not-for-profits as well as spending several years as the Chairman of Kidney Kids NZ Inc.