Eurozone

The European Economic and Monetary Union
The decision to form an Economic and Monetary Union was taken by the European Council in December 1991, and was given legislative effect by the Maastricht Treaty of 1992. Its principal features are:
 * - the adoption of the euro as its members' the single currency;
 * - the coordination of its members' fiscal policies, by the adoption of agreed limits on the magnitudes of their public debt and their budget deficits; and,
 * - the operation of a common monetary policy under the management of  a single  Central Bank.

Its principal institutions are:
 * - the European Council, which sets its main policy directions;
 * - the Council of the European Union which coordinates its policy and decides whether to admit new members;
 * - the European Commission, which monitors compliance with its membership rules; and,
 * - the European Central Bank, which determines its monetary policy.

Rationale
The adoption of a common currency as part of the Economic and Monetary Union was seen as lowering  the barriers to Europe's markets by reducing transaction costs and eliminating exchange rate risks. It was generally accepted that there could be  offsetting  disadvantages arising from  loss of control over their domestic economies, but  most of the continent's governments  judged the balance to be positive. Some have since come to question that judgement because of the unsymmetrical impact of recent demand shocks upon the domestic economies of member countries.

Entry criteria
The criteria for eurozone membership set out in the Maastricht Treaty were:
 * - an inflation rate not exceeding by more than 1.5% that of the three best-performing Member States;
 * - a general government budget deficit not exceeding 3% of GDP and a public debt of less than 60% of GDP;
 * - a long-term interest rate not exceeding by more than 2% that of the three best-performing Member States; and,
 * - a stable exchange rate.

Membership rules
The original version of the membership rules in the  Mastricht Treaty  (The Stability and Growth Pact , )  set the same  limits upon member countries'  budget deficits and levels of national debt. Following multiple breaches of those limits by several member countries including Germany and France the pact was been renegotiated.

The revised agreement treats a budget deficit not greater than 3 per cent of GDP, and a public debt not greater than 60 per cent of GDP as targets rather than permitted limits,  and provides for:
 * - a "medium term budgetary objective" for each member country that specifies margins within which the target values may be exceeded;
 * - an adjustment path for return to the target levels;
 * - procedures for determining and revising the country's  budgetary objectives and  adjustment paths: and,
 * - an "excessive deficit procedure",  prescribing the actions required of a country whose deficit is deemed to be excessive.

The agreement empowered the Council to penalise any participating member state that failed to take appropriate measures to end an excessive deficit. Initially, the penalty would take the form of a non-interest-bearing deposit with the Community, but it could be converted into a fine if the excessive deficit were not corrected within two years.

The membership rules appear to be ambiguous concerning the provision of assistance to a member government that experiences serius financial difficulties. Article 104 of the Maastricht treaty appears to forbid any financial bail-out of member governments, but article 103 of the treaty appears to envisage circumstances under which a bail-out is permitted,

Members
The original members of the eurozone are: Belgium, Germany, Ireland, Spain, France, Italy, Luxembourg, the Netherlands, Austria, Portugal and Finland, Greece joined in 2001; Slovenia joined in 2007; Cyprus and Malta joined in 2008: Slovakia joined in 2009,

Effects of membership
A monetary union may be expected to reduce the cost of transactions among its members by eliminating both currency exchange costs and exchange rate risks - and thus to increase their growth rates. It may also be expected to improve the creditworthiness of its otherwise less creditworthy governments if potential investors expect the union's  other governments  to protect them from default. Their improved creditworthiness may  raise their countries' growth rates further by enabling them to undertake productive investments that they would otherwise be unable to finance. On the evidence of a comparison of growth rates it appears that the economies of the eurozone members as a whole did not grow any faster than those of the other members of the European Union during the ten years following its launch. The major exceptions were Ireland and Greece and - on a smaller scale - Spain.

A further effect upon the economies of member countries arose from the imposition of a common exchange rate for transactions with non-member countries. That meant that a fall in the international competitiveness of a member country's products could no longer be offset by a compensating fall in the exchange rate that governed their price to buyers in non-member countries. Without that offset, the inevitable result of a loss of competitiveness was an increased deficit in the country's balance of payments, paid for by borroing from abroad. On the evidence of a balance of payments comparison it appears that, although there was a small surplus on the eurozone's balance of payments at the end of 2007, Greece, Spain, Portugal and Italy were running large balance of payments deficits, while Germany and the Netherlands were running large surpluses.

Monetary policy
The monetary policy of the eurozone during its first decade was conducted in accordance with accepted  international practice. The remit given to the European Central Bank assigned overriding importance to price stability, but  also required it "without prejudice to the objective of price stability"  to "support the general economic policies in the Community" including a  "high level of employment" and "sustainable and non-inflationary growth". In its initial response to the recession of 2009 the  Bank lagged behind other central banks in the adoption  of expansionary  monetary policies. It eventually made a series of reductions to its discount rate bringing it down to 1 per cent by the second quarter of 2009. When it became clear that those moves had not achieved the intended easing of the credit crunch it was decided in May to adopt the controversial and largely untried  policy of quantitative easing.

Fiscal policies
The Eurozone does not intervene in member governments' fiscal policies except to monitor, and attempt to enforce, compliance with the Stability and Growth Agreement. Early breaches of the agreement were followed by a renegotiation that relaxed its provisions, but there were some further breaches of the relaxed rules. In 2008, the European Commission warned that the eurozone's average public debt could reach 84  per cent of GDP by 2010, and that there were high  levels of public debt in Ireland, Spain and France and Greece. In February 2010, eurozone ministers gave assurances that the euro was not in danger and instructed Greece to reduce public expenditure and increase taxation in order to reduce its debt .

Prospect
The eurozone crisis has drawn attention to a moral hazard that is inherent in the design of the eurozone. The governments of countries such as Greece are enabled in effect to pledge the resources of the union's more creditworhy members such as Germany against their own borrowings. A no bail-out clause in the Maastricht Treaty was intended to deter abuse, but the time inconsistency of that deterrent was revealed when it was realised that the contagion costs of not bailing out the Greek government would exceed the costs of a bailout.

Europe's decision-makers are faced with a more immediate problem than the design of the Eurozone. Their bailouts have so far failed to restore the confidence of operators on the bond market and continued failure could result in a continuing spread of the crisis to an extent that could raise the cost of bailouts to beyond  the feasible capacity of its providors.