The European currency is not an economic project, but more political. The right to issue currency is not symbolic or technical matter, but it is a symbol of sovereignty. Nevertheless, it is primarily a political decision can not be ignored nor economic factors that are linked to accession to the Eurozone. One thing is to meet the essential convergence (Maastricht) rules, the second thing is to achieve a harmonization with other euro area economies prior to accession to the common currency. Given the extent of the contribution will be paid attention only to some indicators. The paper focuses on the evaluation of the cyclical and structural alignment, the exchange rate, wage developments, trade and ownership links economies and the structural similarity of the economies. It will also pointed out that even this alignment may not be the main criterion for decisions for the common currency.