Government debt is a stock of government liabilities at the end of the period. Currency and deposits, loans and debt securities are the instruments that are included in the definition of general government gross debt in Council Regulation (EC) No 479/2009 as amended by Commission Regulation No 220/2014 (Maastricht debt). They are defined in terms of the ESA 2010 classifications. Government debt is measured at "nominal value" - further defined in the Regulation as "face value". This means, in particular, that government debt is not affected by changes in market interest rates, and excludes unpaid accrued interest.
For further information on the Government finance statistics, please access the documentation below:
Public Sector Debt Statistics: Guide for Compilers and Users, a useful source of reference for national compilers and users of debt statistics of the general government and, more broadly, the public sector.