I would recommend that you contact a few local accounting firms in the Perth area to inquire about hiring an accountant. Some of the larger firms in the area include Deloitte, KPMG, EY, PwC, and Grant Thornton. You may also want to consider smaller local accounting firms such as Macquarie Accounting. They specialize in providing accounting services to small businesses and individuals. You can contact them directly to discuss your needs and to get an estimate of their fees.