The enterprise is paid close attention to if its financial assets exceed 50 millions euros. There are five criteria: 1. it has to be foreign direct investment enterprise, 2. all of its assets have to be held abroad and it has to be a direct investor itself (or lend to its fellow enterprises or direct investor) , 3. there are no employees in Estonia, 4. there are no turnover in Estonia. Those are not rules, but guidelines. Small related enterprises meeting all the five criteria are considered SPEs too.