Article 4
1. Germany shall recover from Deutsche Post AG the incompatible aid referred to in Article 1, which has been put at the disposal of Deutsche Post AG for the period from 1 January 2003 until the comparative advantage has been brought to an end. 2. The sums to be recovered pursuant to paragraph 1 shall bear interest from the date on which they were put at the disposal of the beneficiary until their actual recovery. 3. The interest shall be calculated on a compound basis in accordance with Chapter V of Regulation (EC) No 794/2004 and to Commission Regulation (EC) No 271/2008 ( 108 ) amending Regulation (EC) No 794/2004. 4. From the date of notification of this Decision, Germany shall ensure that Deutsche Post AG will no longer benefit from a comparative advantage for the non-price regulated services in light of the financing from the price-regulated revenues of the burdens approved by the Postal regulator.