World Bank’s Open Budgets portal aims to provide a one-stop shop to locate national and sub-national
regional budget economic data from about 40 nations involved in the BOOST project. It also aims to increase transparency and highlight good practice.
See this launch presentation.
Most are developing nations they include:
- Minas Gerais (Brazil)
- Solomon Islands
- Rio Grande do Sul (Brazil)
There are interactive tables and links to national websites.
For information on other national finance see the main World Bank data website which has extensive country files.