The materiality principle supports the information function of accounting in order to enhance investors' decisions. Therefore, materiality guides the entity to present relevant information and to prevent information overload. This decision is mostly subjective and is based primarily on the individual's judgement in applying vague legal concepts. This could result in a greater expectation gap between management information and investors' understanding. The EU accounting directive 2013/34/EU standardises materiality to harmonise with International Financial Reporting Standards (IFRS). However, the German legislator did not change the national accounting rules German Commercial Code (GCC). Moreover, the new EU audit regulation (EU) No 537/2014 requires the disclosure of the quantitative level of materiality thresholds in the audit report. Guidelines remain inadequate, although they are intended to provide clearly defined rules and to avoid boilerplate checklists. Our paper focuses on a conceptual comparison of materiality between the GCC and IFRS/ISA, and on the implications for eliminating the challenge involved in information overload.