A crypto credit card promises something very simple. You hold the card against the terminal, part of your crypto balance is liquidated in the background, and the merchant receives euros. In everyday use it feels like any other card payment. For tax purposes in Germany it is a disposal of your crypto assets.

Almost everything that later creates work with the card follows from that classification. Use it for a year on fuel, weekly groceries and restaurant bills and you do not produce a handful of events. You quickly produce several hundred separate disposals. Each one carries its own date, its own price and its own holding period, and you have to be able to evidence each one if asked.

This article sets out how the card is treated for…