Stablecoin Tax in Canada, the US, the UK and the EU

A one-dollar peg does not stop stablecoin tax events. In Canada, and for UK individuals, selling a stablecoin or swapping it for another is generally a disposal, however small the gain. The US treats a sale as a realisation event, and very probably a swap too.

You will learn why the peg does not settle the tax answer, the rules that matter most in each place, and three traps common to all four. The law is as it stood in late September 2026.

Why the peg does not settle stablecoin tax

A peg is the price a stablecoin's issuer or protocol aims to hold, here one US dollar per token. The peg does not stop a tax event. Most rules below look at disposals.

A sale, a swap or a payment to a supplier can each be a disposal. The gain or loss on each is what you received less the token's cost basis, both in the currency your tax is computed in. If that currency is not the US dollar, exchange rate movements alone can create a gain or loss.

Most examples here use USDC, issued by Circle, and USDT, issued by Tether. The stablecoin design primer explains how each one works, and the holder-rights guide sets out who, if anyone, owes each holder a dollar.

New stablecoin laws in Canada and the US do not change this. Canada's Stablecoin Act, enacted in March 2026 but not in force, and the US GENIUS Act, enacted on 18 July 2025, regulate issuers and contain no tax rule. Treasury has said that the GENIUS Act does not address the federal income tax treatment of payment stablecoins.

Most answers below rest on general crypto-asset guidance, not on rules written for stablecoins. Where no authority has answered a point, that silence is not an exemption. The taxpayer still has to reach an answer.

Canada: every swap counts, in Canadian dollars

The Canada Revenue Agency (CRA) names stablecoins as a category of crypto-asset but attaches no rule to it. The general crypto-asset rules apply.

A swap is a disposition. The CRA lists trading a crypto-asset for currency, or for another type of crypto-asset, among the ways a disposition can occur. USDC and USDT are different types: they have different issuers and give holders different rights.

Everything is measured in Canadian dollars. An individual, and a corporation that has not elected otherwise, converts each amount at the Bank of Canada's rate for the day or another acceptable rate.

Take an individual who holds USDC as capital property. The prices are Kraken's daily closes, and fees are ignored.

• 3 February 2025: buys 40,000 USDC at 1.4423 Canadian dollars, a cost of 57,692.00.
• 2 June 2025: sells all 40,000 at 1.3703, for proceeds of 54,812.00.
• Result: a capital loss of 2,880.00 Canadian dollars, or 4.992 per cent.

Against the US dollar nothing happened: USDC closed at 1.0000 on the first day and 0.9998 on the second. The Canadian dollar strengthened, and the loss is real for Canadian tax.

A corporation can elect out. An individual cannot. A corporation resident in Canada, with a few exceptions, may elect under section 261 of the Income Tax Act to compute its tax results in its functional currency. That must be a qualifying currency, such as the US dollar, and the main currency of its books.

Buying back within 30 days defers a loss. For an individual, the superficial loss rule looks at the 30 days before and after a sale. If they, or an affiliated person, buy the same property in that window and still hold it at its end, the loss becomes nil. It is added to the cost of the new units.

Say the individual buys 40,000 USDC back on 16 June 2025 at 1.3560, for 54,240.00, and still holds it on 2 July. The 2,880.00 loss is nil, and the new cost is 57,120.00, or 1.4280 per USDC. The loss is deferred, not destroyed. A corporation, trust or partnership meets a different rule, which suspends the loss instead.

United States: property, swaps and broker forms

The IRS names stablecoins as digital assets in its FAQ 47, and digital assets are treated as property.

A sale, or a swap for something materially different, is a realisation event. The regulations cover a sale for cash and an exchange for a digital asset that differs materially in kind or extent, however small the gain. The Code has no de minimis exception for digital assets, and like-kind deferral under section 1031 applies only to real property.

Is USDC for USDT materially different? No IRS guidance addresses that pair. The Supreme Court's Cottage Savings test asks whether the holders' legal entitlements differ, and it treats shares issued by different corporations as different. USDC and USDT have different issuers and redemption rights, so the swap is very probably a realisation event.

For a US dollar taxpayer the gain is usually small, because both legs are worth about a dollar.

Form 1099-DA is not a list of your disposals. A broker may report sales of a qualifying stablecoin as one annual total per token, instead of sale by sale. A broker using this optional method:

• need not report anything if the customer's qualifying stablecoin sales total $10,000 or less for the year;
• need not report a swap into a token that is not a qualifying stablecoin, such as USDC for ether;
• flags the method with the "Qualifying stablecoins" checkbox in box 11a of the form.

The IRS's FAQ 100 says the gain or loss is recognised "even if your broker does not report the transactions". A C corporation is generally an exempt recipient and may receive no Form 1099-DA at all.

United Kingdom: disposals in sterling, and a draft for 2027

A dollar stablecoin is not foreign currency. HMRC does not consider cryptoassets to be currency or money, and chargeable gains are computed in sterling. The government's 2026 call for evidence names exchange movements on non-sterling stablecoins as the most obvious source of gains and losses. A drift from par is another.

For an individual, each use is a disposal. HMRC's list includes selling tokens for money, exchanging them for a different type of token and using them to pay for goods or services. So paying a bill in USDC, swapping USDC for USDT or redeeming USDT with Tether is a disposal each time.

Disposals with no gain still need tracking. Once total proceeds from all disposals exceed £50,000, they may need to be reported to HMRC.

Matching comes before the pool. Each type of token has its own pool. An individual matches a disposal first with tokens of the same type acquired that day, then with any acquired in the next 30 days. Only then does the pool apply.

A company whose holding falls under the chargeable gains rules matches the same day, then the previous nine days. If you receive and pay out stablecoins every few days, the pool is the exception, not the rule.

For a company, the holder matters. The call for evidence says that, depending on the redemption rights and who holds the token, some stablecoins "can legally amount to a debt between issuer and holder". A company with redemption rights will likely have a money debt, which may bring the stablecoin under the loan relationship rules, taxed on the accounts.

On that test a money debt is likely for a company with a Circle Mint account, the account Circle gives accepted customers to issue and redeem USDC. It is unlikely for a company with no right against anybody. Otherwise the stablecoin may be part of the company's trade, or fall to the chargeable gains rules.

The draft for 2027. Draft legislation published in July 2026 would treat eligible stablecoins more like money. Gains of individuals and trustees would be exempt from 6 April 2027, and companies would be taxed on their accounts from 1 April 2027. On 28 September 2026 this was still a draft, not law.

European Union: national income tax, EU-wide reporting

Income tax is national. The EU has no common rule for taxing a stablecoin gain. The Council itself records that member states' rules on taxing crypto-asset income differ from one member state to another. Each country's own law decides.

What the EU does set. The Union sets VAT and the reporting of crypto-asset transactions for every member state. Through MiCA, the Markets in Crypto-Assets Regulation, it also sets the rights of holders of e-money tokens. These aim to hold a stable value by referencing one official currency, and USDC issued in the EEA by Circle's French company is one.

An e-money token is deemed electronic money. Its holder has a claim against the issuer, and the issuer must redeem it at par, at any time, on request.

Those rights can change a national tax answer that turns on whether the holder has a debt claim, as the UK's does for a company. Whether a holder outside the EEA, such as a UK company, can claim them against Circle's French company is an open legal question.

DAC8 reports. It does not exempt. DAC8, the directive that extends EU tax reporting to crypto-assets, applies from 1 January 2026. It treats stablecoins as crypto-assets, but moves regulated electronic money out of crypto-asset reporting and into financial account reporting. The reporting duties fall on service providers.

Key takeaways

• The peg does not stop tax events. In Canada, and for UK individuals, a sale or a swap of one stablecoin for another is generally a disposal. In the US a sale is a realisation event and a swap very probably is, however small the gain. A UK company may instead be taxed on its accounts.
• Currency risk hides inside the peg. A US dollar stablecoin is not one Canadian dollar or one pound, so a token that holds $1 can still make a gain or loss. A Canadian corporation that has elected a US dollar functional currency is the exception.
• Who can redeem differs by holder. One holder's token can carry a debt or a redemption right, while another holder of the same token may have only a transferable digital asset. Keep gross proceeds, fees, issuer account records and the exact legal terms.
• Reporting rules are not exemptions. Form 1099-DA's optional stablecoin method and DAC8 change what gets reported, not the gain or loss you have to work out.

How Tokenbooks helps with stablecoin tax lots

Currency gains inside a peg show only when disposals are measured in your own currency.

A Tokenbooks portfolio kept in Canadian dollars, pounds or euros values a dollar stablecoin with a market price, such as USDC, from its own daily close in that currency. So each lot's cost and each disposal's proceeds are in the portfolio's currency.

Stablecoins keep their own cost-basis lots, and a trade of USDC for USDT is booked as a disposal of one and an acquisition of the other. The capital gains and losses report lists each lot disposed of with its asset, amount, acquisition and disposal dates, proceeds and cost basis, and links back to the transaction.

Start with the crypto accounting workflow in Tokenbooks.

More in this series

Accounting Token Anatomy: Stablecoins. This article stands alone, but the series builds in order.

Previous (02.2.7): Stablecoin Journal Entries: A Full-Year IFRS Worked Example