20060420
MEMO
Operational Definition of Maastricht Price Stability Criterion
The Treaty requires a high achievement of price stability criterion to enter a third stage of
Economic and Monetary Union. According to the Article 121(1) of the Treaty each
Member State should refer to the achievement of a high degree of price stability, which
should be apparent from a rate of inflation which is close to that of, at most, three best
performing Member States in terms of price stability.
According to the Article 1 of the Protocol No 21 the criterion of price stability shall mean
that a Member State has a price performance that is sustainable and an average rate of
inflation, observed over a period of one year before the examination, that does not exceed
by more than 1.5 percentage points that of, at most, the three best performing Member
States in terms of price stability.
The first operational definition on price stability was made by the Commission in the
Convergence Report of 1993
1
. In measuring the performance of member states, the
Commission has set up an
inflation reference range
by assuming that the first and the
third best performing country determine the reference range.
In 1996 Convergence Report
2
the Commission has used
six alternative methods for
calculating inflation reference values
by concluding that they produced similar results
within a range of 0.5 percent. The Commission was including into formula one to three
best performers and using weighted and unweighted averages. It was considered that the
reference value measured against one country is the strictest possible way in which the
reference value could be defined. Since 1998 the Commission has been calculating the
operational reference value as the arithmetic average of the inflation rates of the three
Member States as it argued that the range of 0.5 produced marginal effects.
Commission in its report of May 2000 has raised another question of whether countries
not participating in the euro should be considered for the inflation and interest rates
reference values.
Commission has referred to changing circumstances in pursuing price stability by means
of monetary policy which have changed with the introduction of euro in those countries.
It was also argued that countries aiming to join euro should orient their convergence
efforts to economically relevant benchmarks of the euro area economies. A number of
euro members which are above the value for inflation was also indicated in the report for
information purposes as a reference.
1
2
SEC(1993)/1755 final
COM(1996)/0560 final
1