text: In order to ensure long-term compliance with the SGP deficit and debt criteria, the member states have since the SGP-reform in March 2005 striven towards achieving their country-specific Medium-Term budgetary Objective (MTO). The MTO is the set limit, that the structural balance relative to GDP needs to equal or be above for each year in the medium-term. Each state selects its own MTO, but it needs to equal or be better than a calculated minimum requirement (Minimum MTO) ensuring sustainability of the government accounts throughout the long-term (calculated on basis of both future potential GDP growth, future cost of government debt, and future increases in age-related costs).
  The structural balance is calculated by the European Commission as the cyclically adjusted balance minus "one-off measures" (i.e. one-off payments due to reforming a pension scheme). The cyclically adjusted balance is calculated by adjusting the achieved general government balance (in % of GDP) compared to each year's relative economic growth position in the business cycle (referred to as the "output gap"), which is found by subtraction of the achieved GDP growth with the potential GDP growth. So, if a year is recorded with average GDP growth in the business cycle (equal to the potential GDP growth rate), the output gap will then be zero, meaning that the "cyclically-adjusted balance" then will be equal to the "government budget balance". In this way, because it is resistant to GDP growth changes, the structural balance is considered to be neutral and comparable across an entire business cycle (including both recession years and "overheated years"), making it perfect to be used consistently as a medium-term budgetary objective.