The paper discusses two issues. Firstly: Can the euro also be introduced without an approval of the given country? The paper examines rules for adopting the euro comprised within various EU documents as well as existing experience of the euro area member states. The resulting answer is negative. Secondly: How can we describe the Czech strategy in adopting the euro? The negative position towards the euro is not motivated by economic reasons (nominal and real convergence to the euro area), but rather by political reasons arising in the past. This phenomenon can be described as “euro- hysteresis”.