Crypto Mining Tax in Canada: Business Income, Capital Gains and the GST/HST Trap

Mining produces two separate taxable events, and most of the trouble I see comes from people treating them as one. The coin is taxed when you receive it. The same coin is taxed again, on whatever happened to its value since, when you dispose of it. Get the first event wrong and you quietly corrupt the second, because the amount you included in income is the cost base you carry forward.

There is no hashrate, no rig count and no dollar figure that decides whether your mining is a business. Anyone quoting you a threshold has invented it. The test is the ordinary one the CRA applies to any activity, and it is worth knowing precisely because the answer changes almost everything downstream.

Business activity or personal activity

The CRA’s position is that the treatment depends on whether your mining is a personal activity or a business activity, decided case by case. It also says that in most cases mining will be considered carrying on a business, because of the scale and resources involved.

The factors the CRA weighs are set out in its guidance on income from crypto-asset transactions. None of them is decisive on its own.

Why hobby is rarely the better outcome

Two practical consequences follow. First, the answer is usually business, and people who assume otherwise because “it is just a hobby” are frequently wrong. Second, a hobby classification is not the friendly outcome people expect: a personal activity gives you no deduction for the electricity or the hardware, and the coins still have a cost base you must track for the eventual sale.

Report it the same way every year

The same analysis, applied to trading rather than mining, is set out in business vs capital account for crypto. Whichever conclusion you reach, apply it consistently. Reporting as a business in a loss year and as a hobby in a gain year is the kind of position that draws exactly the attention described in CRA audit triggers.

The two events, and what each one costs

The capital gains inclusion rate is one-half. The proposed increase to two-thirds was cancelled on 21 March 2025, and searches still surface a January 2025 deferral notice that reads as though it went ahead. It did not.

Inventory or capital property

Where mining is a business, the coins you produce are ordinarily held as inventory of that business, and a later sale is on income account rather than capital account. Some operators take the position that particular coins were segregated and held as an investment, so that a later gain is capital. That position can be defensible, and it is fact-driven: it needs evidence of a change in purpose, and it should be documented at the time rather than argued afterwards.

The test as a flowchart

Did you receive crypto for validating transactions?
│
├─ No ──► Not mining. See the staking and DeFi rules instead.
│
└─ Yes
   │
   ├─ Is the activity commercial, regular and equipped for profit?
   │   │
   │   ├─ No ──► Personal activity
   │   │          • No income inclusion on receipt
   │   │          • No deduction for power or hardware
   │   │          • Cost base tracked; later sale is a capital gain
   │   │
   │   └─ Yes ─► Business
   │              • FMV on receipt included in business income
   │              • Expenses and CCA deductible
   │              • Coins normally inventory, so sale is income account
   │              • GST/HST: see section 188.2 below
   │
   └─ Mining through a corporation?
       └─ Add: is the income active business income or investment income?

The GST/HST rule almost nobody applies correctly

This is the part that costs real money, and it is the part missing from most crypto mining content written for a Canadian audience.

Section 188.2 of the Excise Tax Act deems the provision of a mining activity in respect of a cryptoasset not to be a supply where the person receives a mining payment. The CRA sets this out in Notice 324. A mining activity covers validating transactions and adding them to the distributed ledger, maintaining and permitting access to that ledger, and allowing computing resources to be used for either.

What section 188.2 denies you

Two things follow:

• You do not charge GST/HST on the mining payment.
• To the extent property or services are acquired for use in mining activities, you are deemed to have acquired them otherwise than in the course of commercial activity. That means no input tax credits on the electricity, the rigs, the hosting or the cooling.

The rule is deemed to have come into force on 5 February 2022. For a Canadian operator paying Ontario HST at 13% on a large power bill, this is not a rounding error, and it reverses the intuition that anything with a business purpose generates recoverable tax. The general ITC mechanics are covered in input tax credits; mining sits outside them.

The narrow pool carve-out

There is a narrow carve-out. Where the person who receives the mining activity is known to the miner and is not a mining group operator of a group the miner belongs to, the deeming rule can fail to apply. Notice 324 discusses the kinds of pool arrangements that bear on this. In practice, anonymous pool rewards are the common case and the denial applies. If you are contracting to provide compute to an identified counterparty, get the analysis done before you file, not after.

What a mining business can deduct

If you are carrying on a business, ordinary deduction rules apply. The usual items:

• Electricity, which is normally the largest single cost and needs to be supported by metered or apportioned records if the rigs share a residential supply
• Hosting and colocation fees
• Repairs, replacement fans and consumables
• Internet and monitoring software
• Pool fees, which reduce what you receive and should be recorded gross of income and fee rather than netted silently

Hardware is Class 50, not an expense

Hardware is capital, not an expense. General-purpose electronic data processing equipment and its systems software normally falls in Class 50 at a 55% declining balance rate under the CRA’s classes of depreciable property. Purpose-built ASIC units are worth classifying deliberately rather than by default. The mechanics of the pools, the half-year rule and recapture are set out in capital cost allowance explained.

Rigs running at home

If part of the operation runs from your home, the space and power apportionment follows the same logic as a home office claim, and it needs to be measured rather than estimated. A sub-meter on the rig circuit is worth more in an audit than any calculation done afterwards.

The halving is the real test

None of this decides whether the operation is worth running. That is a cost model rather than a tax question, and the moment it gets tested is the halving, when block revenue drops by half at a known height and only the operators who already knew their cost per terahash survive it.

Valuation and records

Every reward needs a Canadian-dollar value at the moment it was received. The CRA’s guidance on determining the value of crypto-assets asks for a reasonable and consistent method. Pick a source, document it, and use it for the whole year. Switching sources to suit the result is the fastest way to lose an otherwise good position.

Keep, per reward: date and time, asset, quantity, the Canadian-dollar value used, the source of that value, the pool, and the wallet address it landed in. Keep records for six years from the end of the tax year they relate to, per keeping records.

Mined coins then flow into the same pooled cost base as everything else you hold of that asset. Canada uses average cost, not FIFO, and mining rewards entering the pool at income value is exactly where reconstructed records fall apart. The method is in crypto ACB and record keeping.

Should the mining sit in a corporation?

Sometimes, and not for the reason people expect. A corporation does not make the income disappear; it changes when the personal tax is paid and at what rate, and it introduces questions about whether the income is active business income eligible for the small business deduction or investment income taxed at a much higher corporate rate and refunded on distribution. Equipment financing, limited liability and a sale of the operation are usually stronger reasons than rate arbitrage. The trade-offs are in holding crypto in a corporation.

Where this usually goes wrong

The three failures I see most often: no contemporaneous valuation of rewards, so income is estimated years later from a price chart; ITCs claimed on power and hardware that section 188.2 denies, which is an assessable error with interest; and hardware expensed in full in year one rather than added to a CCA class.

None of these is exotic. All three are cheaper to prevent than to unwind.

If you are mining at any scale and want the classification, the GST/HST position and the cost base tested before a return goes in, send me the numbers and the setup and we can work through where you actually stand.