If you change from Bitcoin to another virtual currency
...
In this case taxes would have to be paid for the profits of the operation, as there is a change in equity. Again, the difference between the value of buy and sell will be taken into account.
If this is true, being tax compliant in Spain becomes a hell for an active trader.
Strangely it contradicts somewhat with:
Bitcoins operate through virtual wallets, which is where these virtual coins are stored. From a point of view of the taxation of the virtual currencies, these have no real value until you convert them to a national currency, that is, to euros in the Spanish case.
No real value before conversion to Euros, but liable to taxation in change of equity between cryptos.
I know some other European countries agreeing with the "no real money before converted" thinking, but sane enough not to say you need to announce profits trading between BTC/altcoin pairs. Can someone confirm this schizophrenic ruling? How in the world can they enforce it?
Quotes Chrome translated from this source:
http://www.bolsamania.com/declaracion-impuestos-renta/como-tributan-los-bitcoins-en-la-renta/