This special focus reproduces three of the background documents prepared in support of the work on the Policy Framework for Investment. They include three of the central policies covered by the Framework: trade policy, competition policy and tax policy. Each article explains the relevance of the policy area in question for investment and articulates issues to consider in governments’ efforts to mobilise more and better investment. All three articles have benefited from discussions in the Task Force overseeing the development of the Policy Framework for Investment as well as in the various OECD committees with expertise in the relevant areas.