How is cryptocurrency taxed for miners?

“The income tax treatment for cryptocurrency miners is different depending on whether their mining activities are a personal activity (a hobby) or a business activity. This is decided case by case. A hobby is generally undertaken for pleasure, entertainment or enjoyment, rather than for business reasons. But if a hobby is pursued in a sufficiently commercial and businesslike way, it can be considered a business activity and will be taxed as such.” - from the CRA’s Guide for cryptocurrency users and tax professionals

Individuals who are income tax residents of Canada are taxed on their worldwide income, including any income earned from cryptocurrency mining. Be aware that due to the large fluctuations in daily activity across trading platforms, tax authorities may take the average of the opening and closing values of the day, and also average values across a number of major exchanges.

The CRA has indicated that cryptocurrency mining is a taxable business for Canadian tax purposes due to the fact that miners generate revenue from the sale of cryptocurrencies.