European System of Central Bank (ESCB), European Commission (Eurostat) and national data.

The ECB collects the annual government finance statistics (GFS) on individual countries directly from the National Central Banks (NCBs). This collection takes place in spring and autumn each year. The main data sources for the NCBs are the ESA Transmission Programme tables, which are compiled in most countries by the National Statistical Institution (NSI) supplemented by NCB or finance ministry data on debt at nominal value. The ECB receives the quarterly non-financial accounts data from the individual countries via Eurostat. Quarterly financial accounts for general government and quarterly Maastricht debt are received directly from the national compilers (NSIs or NCBs).