The Court of Justice of the European Union rejected an appeal by the European Commission, the EU's executive, in the case, upholding a previous ruling by an EU court.
Brussels started a probe after voicing concern that tax rules which came into force in Poland in September 2016 could favour smaller shops, and that this could breach EU state aid rules.
The EU ordered Warsaw to suspend the tax. Poland launched an appeal and in 2019 an EU court ruled that the European Commission had incorrectly classified the Polish retail tax as state aid.
(pk/gs)
Source: PAP