This article focuses on the challenge of determining the relative weight of domestic and global justice demands. This problem concerns a variety of views that differ on the metric, function, scope, grounds and fundamental interpretation of justice norms. I argue that domestic and global economic justice are irreducibly interdependent. In order to address their exact relation, I discuss and compare three theoretical models: (i) the bottom-up-approach, which prioritizes domestic justice; (ii) the top-down-approach, which prioritizes global justice; and (iii) the horizontal framework, according to which both domestic and global principles pose equally stringent demands that are to be implemented horizontally, without attributing a simple priority to one over the other. I argue that the third model represents the best overall framework, although more complex normative criteria need to be elaborated on the basis of this approach, affecting issues such as justice in climate change mitigation and adaption, development cooperation, trade, finance, taxation and immigration.