Equity has been at the core of the global climate debate since its inception over two decades ago, yet the current negotiations toward an international climate agreement in 2015 provide a new and critical opportunity to make forward progress on the difficult web of equity issues. These negotiations and the discussions about equity are taking place in a context that has shifted: all countries will be covered under a new agreement; growing climate impacts are being felt, especially by the most vulnerable; and there is an emergence of new institutions and increasing complexity in the international climate regime. Innovative thinking on equity, including which countries should take action and how, is therefore essential to finalizing an agreement by 2015. A broader, deeper, and more holistic view of equity is necessary, one that sees equity as a multi-dimensional challenge to be solved across all the facets of the international climate process.