The disclosure of assets is increasingly being seen around the globe as a key tool in combating corruption. Although asset declarations have been utilised as an anti-corruption tool on a larger scale since the 1970s, the topic acquired renewed international focus with the passage of UNCAC, adopted by the UN General Assembly in 2003. UNCAC created an international legal basis for states to require public officials to declare their assets. Transparency International commissioned this report as a peer-reviewed scoping paper examining current best practices in asset disclosure systems. The original research provides an evidence base for a comparative view of country-level systems via National Reports in Egypt, Lebanon, Libya, Morocco, Palestine, Tunisia and Yemen.