Personal Income Tax (PIT) is one of the key sources of revenues in Advanced Economies (AEs) but plays a much more limited role in Low-Income Developing Countries (LIDCs) and Emerging Market Economies (EMEs), both in terms of revenue and redistributive impact. Notwithstanding, this paper shows...

Tax capacity-the policy, institutional, and technical capabilities to collect tax revenue-is part of a deeper process of state building that is essential for achieving the sustainable development goals. This Staff Discussion Note shows that developing countries have made some progress in revenue...

Small Developing States (SDS) face substantial challenges in achieving sustainable development. Many of these challenges relate to the small size and limited diversification of their economies. SDS are also among the most vulnerable countries to the impact of climate change and natural...

A striking feature of US states convergence is the link between the spatial speed of convergence and the aggregate growth rate: fast aggregate growth induces a reduction in regional inequalities. This paper uses a neoclassical growth framework with integrated economies in order to capture this...