Ireland
Department of Housing, Planning and Local Government
National Oversight and Audit Commission, including the Local Authority Performance Indicator Reports
Local Government Management Agency
Institute of Public Administration, including the publications Administration and Local Authority Times
Association of Irish Local Government
The Office of the Revenue Commissioners, including the Local Property Tax (LPT) and LPT Statistics
International
OECD Fiscal Federalism Network
World Bank link on Decentralisation
European Committee of the Regions Division of Powers
Institute for Fiscal Studies on Local Government Finance
Local Government Studies journal
Data
https://ec.europa.eu/eurostat/web/main
https://www.oecd.org/regional/Subnational-governments-in-OECD-Countries-Key-Data-2018.pdf
Publications online
Council of Europe Charter of Local Self-Government
Council of Europe Local Finance Benchmarking
OECD/UCLG Subnational Governments around the World Structure and Finance