The European Union is demanding that US coffee chain Starbucks and car manufacturer Fiat repay up to €30m in tax breaks they received from EU nations.
It is seen as a major ruling to cut down on tax deals global multinationals often shop for.
EU anti-trust commissioner Margrethe Vestager said in support of the ruling that “all companies, big or small, multinational or not, should pay their fair share of tax”.
The commission polices state aid and anti-trust laws and has been tightening loopholes in EU legislation that have allowed multinationals to avoid millions in taxes.
Ms Vestager has said the Netherlands will have to recoup the unpaid taxes from Starbucks and Luxembourg from Fiat.
She said the EU is investigating similar tax practices in all of the bloc’s 28 nations.