The disclosure of headline earnings is one of the JSE Limited (JSE)’s listing requirements. All listed entities are required to comply with this disclosure requirement. Guidance in the form of The Circular on headline earnings is issued by the South African Institute of Chartered Accountants (SAICA), and is updated every time when there are changes to the International Financial Reporting Standards (IFRS). The Circular adopts a rules-based approach and specifies what is included and excluded in the calculation of headline earnings. The rules consist of general rules, which apply to all entities other than those industry groups with special provisions such as the life insurance entities. This study questions whether a rules-based headline earnings approach or a principles-based approach is more appropriate for the calculation of headline earnings of listed property entities on the JSE, for economic decision-making purposes. The research method consisted of questionnaires that were sent out to stakeholders. The responses from the CFOs and investment analysts show that principles-based headline earnings guidance is preferred over rules-based headline earnings guidance. / Business Management / M. Phil. (Accounting Sciences)