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Taxation of crypto bank cards

They don't report automatically to the tax office, but if they want to trace you they only need to ask. If the cards are registered outside EEA, it's harder for the tax office to request your data, but if you are involved in some criminal investigation they will report you in a minute.
 
Yet..There is talks that CRS information should be interpreted to include Crypto aswell. If it wont, EU already has legislation in the DAC7 pipeline.
Soon they will include taxes for breathing oxygen