HMRC Wants to Know How to Tax Your Stablecoins — And You’ve Got Until 7 May to Have Your Say
If you hold USDC, USDT, or any other stablecoin, HMRC has just launched a consultation that could fundamentally change how your holdings are taxed. The Call for Evidence on Stablecoin Taxation opened on 26 March 2026 and closes on 7 May. Here’s what it means, what could change, and why it matters.
The Problem HMRC Is Trying to Solve
Right now, stablecoins are taxed exactly like Bitcoin, Ethereum, or any other cryptoasset. Every time you spend, swap, or transfer a stablecoin, it counts as a disposal for Capital Gains Tax purposes.
Think about what that means in practice. You hold USDC — a dollar-pegged stablecoin designed to always be worth $1. You use it to buy something. Under current rules, you need to calculate the sterling equivalent when you acquired the USDC, compare it to the sterling equivalent when you disposed of it, and report any gain or loss. For a sterling-denominated stablecoin, that gain would be negligible. For a dollar-denominated one like USDC, the only movement is the GBP/USD exchange rate.
You still have to track it. You still have to report it if your aggregate disposals exceed £50,000. You’re filling in capital gains computations for what is functionally a currency transaction.
HMRC knows this doesn’t make sense. That’s why they’re asking.
What Could Change
The consultation is exploring several options, though HMRC hasn’t committed to any specific direction yet. The key question is whether stablecoins should continue to be treated as cryptoassets or whether some categories — particularly those pegged to fiat currencies — should be treated more like money or debt instruments.
Option 1: Keep things as they are. Stablecoins remain cryptoassets. Every disposal is a CGT event. Administrative burden stays high but the rules are at least familiar.
Option 2: Treat qualifying stablecoins like foreign currency. This would align with how forex gains work — simpler reporting, potentially falling under the existing foreign currency rules rather than CGT. A sterling-pegged stablecoin might attract no tax at all on disposal, just as spending pounds doesn’t trigger a tax event.
Option 3: Treat them as debt instruments. If a stablecoin represents a claim on the issuer for a fixed amount of fiat currency, it could arguably be a simple debt. The CGT rules already exempt simple debts in most cases — though HMRC notes this exemption is unlikely to apply to most stablecoin holders under current law because it only covers the original creditor.
The consultation also covers corporate taxation. For companies, the accounting treatment drives the tax treatment, and there’s genuine uncertainty about whether stablecoins are financial assets, intangible assets, or inventory under IFRS. The ICAEW has highlighted that most stablecoins probably fail the IFRS 9 definition of a financial asset because holders typically don’t have direct contractual redemption rights with the issuer.
Why This Matters Now
The government is simultaneously building a new FCA regulatory framework for cryptoassets, expected to come into effect in late 2027. This will introduce the concept of a “qualifying stablecoin” — one that references a fiat currency, is fully backed, and offers guaranteed redemption rights when issued from the UK. The Bank of England is separately consulting on “systemic stablecoins” that are widely used in payments.
In other words, the regulatory infrastructure is being built to make stablecoins a legitimate part of the UK payments system. The tax treatment needs to keep pace. Taxing something you want people to use as money in the same way you tax speculative investments is contradictory.
The Iran war has added urgency. With oil at $100 and the Strait of Hormuz effectively closed, stablecoin volumes have surged as people seek dollar-denominated safe havens outside the traditional banking system. USDC circulation has grown significantly in 2026. The more stablecoins are used for real economic activity, the more absurd it becomes to treat every transaction as a capital gains event.
What You Should Do
If you hold stablecoins personally: Keep records of every acquisition and disposal, including the sterling equivalent at each point. Under current rules, you still need this even if the gain is negligible. If your total disposal proceeds across all assets exceed £50,000 in a tax year, you must report to HMRC.
If your business uses stablecoins: Review the accounting treatment with your advisors. The classification as financial asset, intangible asset, or inventory has direct tax consequences, and the answer isn’t straightforward.
If you have views on how stablecoins should be taxed: Respond to the consultation. Email digitalassets@hmrc.gov.uk before 7 May 2026. HMRC has explicitly said they want to hear from individuals, businesses, advisors, and trade bodies. This is your chance to shape the rules before they’re written.
The full Call for Evidence is available at: gov.uk/government/calls-for-evidence/cryptoasset-taxation-stablecoins
Our View
The current treatment is unsustainable. Treating a dollar-pegged stablecoin the same as Bitcoin for tax purposes ignores economic reality. A USDC holder isn’t speculating — they’re holding a digital dollar. The tax system should reflect that.
The most sensible outcome would be to align qualifying stablecoins with foreign currency treatment: straightforward, well-understood rules that already exist for forex. Sterling-pegged stablecoins should arguably attract no CGT at all on routine use.
The harder question is where to draw the line. Not all stablecoins are created equal — algorithmic stablecoins with no backing assets are fundamentally different from fully-reserved, FCA-regulated instruments. The regulatory framework’s concept of “qualifying stablecoin” provides a natural dividing line, and the tax treatment should follow it.
Whatever HMRC decides, the days of treating all cryptoassets identically for tax purposes are numbered. This consultation is the beginning of that separation. Pay attention.