20. Juni 2017 Supreme Tax Court to refer question to European Court of Jus ... On 30 May 2017 the Supreme Tax Court decided to refer to the European Court of Justice (ECJ) the question of whether the real estate transfer tax (RETT) exemption on conversions - in Section 6a Real Estate Transfer Tax Act - constitutes illegal state aid. Kategorien: Supreme Tax Court casesSchlagwörter: real estate transfer tax, state aid, Eur ...