The China-Pakistan Economic Corridor is often portrayed as the flagship project of the Belt and Road Initiative. While much attention has been devoted to its geopolitical repercussions, its impacts on Pakistan’s federal system and interprovincial relations have not yet been explored. Organized around interviews conducted in 2015, 2018, and 2019, this article demonstrates that the construction of the economic corridor is acting as a centripetal force in Pakistan’s federal structure, despite the potential for such a large external investment to redress the disparities between provinces.