The Public Sector Balance Sheet (PSBS) Database shows comprehensive estimates of public sector assets and liabilities that formed the basis for the analysis presented in the October 2018 edition of the Fiscal Monitor. The database covers a broad sample of 55 countries, of which 25 countries contain time-series estimated PSBS and the rest for one single-year data compiled as part of Financial Transparency Evaluations and IMF Technical Assistance missions. The PSBS database is compiled on a best-effort basis, using the conceptual framework of the IMF's Government Finance Statistics Manual 2014. Data for the central and general government generally replicate data reported by country authorities in the IMF's Government Finance Statistics database. Data for the central bank generally replicate data reported by country authorities in the IMF's Monetary and Financial Statistics database. Where these data fail to cover all categories of assets and liabilities, they are complemented by other data reported by statistical authorities at the national level. other international organizations, or staff estimates. Data sources for public corporations are country specific and are captured in the country specific metadata documents.