The way I understand it, this allows people/companies to do their accounting at least in parts in Bitcoin and then pay taxes (in Euros, of course) on the result

The way I understand it, this allows people/companies to do their accounting at least in parts in Bitcoin and then pay taxes (in Euros, of course) on the resulting revenue, rather than treating Bitcoins as goods that are sold/bought for ‘real’ money. But I am neither an accountant, nor a lawyer, nor an economist, so the likelihood of my guess being correct is rather slim.