Cryptocurrency moved from the fringes to the mainstream financial conversation sometime around 2020–2021, and by 2026 it sits — somewhat uncomfortably — in the portfolio discussions of many HNW investors and family offices. Bitcoin has been the dominant asset, but the ecosystem includes thousands of other tokens, decentralised finance protocols and infrastructure plays.
This article does not advocate for or against cryptocurrency. It attempts an honest assessment of the role digital assets might play in an international portfolio, the risks that are often underweighted, and the regulatory and tax landscape that has evolved significantly in recent years.
Bitcoin: digital gold or speculative instrument?
The most coherent investment case for Bitcoin rests on scarcity and monetary theory. Bitcoin has a fixed supply cap of 21 million coins, embedded in the protocol. This contrasts with fiat currencies, which can be printed without limit. The "digital gold" thesis holds that Bitcoin can serve a similar portfolio role to gold — a non-correlated, hard asset that preserves value over long periods and hedges against monetary debasement.
The counterarguments are also well-established:
- Bitcoin's volatility is an order of magnitude higher than gold. Drawdowns of 50–80% from peak to trough have occurred multiple times.
- Bitcoin produces no income, no yield, no dividends — its value is entirely derived from what the next buyer will pay.
- Regulatory risk remains real, despite the maturation of the market. A hostile regulatory environment in major jurisdictions could suppress prices substantially.
- The investment case depends on adoption continuing — which requires Bitcoin to remain the dominant crypto-monetary network despite competition from other blockchains.
By 2026, institutional ownership of Bitcoin has grown substantially — US spot Bitcoin ETFs launched in January 2024 and have accumulated significant assets. Sovereign wealth funds and central banks have begun to explore digital asset holdings. This institutionalisation has reduced — but not eliminated — the extreme volatility of earlier cycles.
The broader crypto ecosystem
Beyond Bitcoin, the ecosystem includes:
Ethereum — the dominant smart contract platform. Ethereum has use cases in decentralised finance (DeFi), NFTs, tokenised assets and more. The shift to proof-of-stake in 2022 made it significantly more energy-efficient but also changed its monetary dynamics.
Stablecoins — tokens pegged to fiat currencies (USDC, USDT). Used as a settlement layer within crypto ecosystems. Some international investors use stablecoins to hold dollar exposure without going through the traditional banking system, though counterparty and regulatory risks apply.
Altcoins — thousands of alternative cryptocurrencies, most of which are highly speculative and many of which have failed. The risk profile here is venture capital-like or worse.
For a conservative HNW investor, the practical choice is typically: Bitcoin only, or Bitcoin and Ethereum, or no crypto at all.
MiCA and the regulatory landscape
The EU's Markets in Crypto-Assets Regulation (MiCA) came into force in stages from 2024 and represents the most comprehensive regulatory framework for crypto-assets in the world. Key provisions include:
- Authorisation requirements for crypto-asset service providers (exchanges, custodians, advisers) operating in the EU
- Consumer protection requirements for token issuers
- Strict rules for stablecoin issuers
- Market abuse rules for crypto markets
For internationally mobile investors in EU/EEA jurisdictions, MiCA means that the exchanges and custodians they use must now meet regulated standards — a meaningful improvement in consumer protection.
UK regulation — the UK is developing its own crypto regulatory framework, with the FCA taking on expanded responsibility for crypto-asset service providers from 2024. UK firms must register with the FCA; unregistered firms operating in the UK are illegal.
UAE — Dubai's VARA (Virtual Assets Regulatory Authority) has created a comprehensive licensing regime and has attracted numerous regulated crypto firms. The UAE is positioning itself as a global crypto hub.
Tax treatment — key jurisdictions
UK: Cryptocurrency is treated as a capital asset. Disposal — including selling for fiat, swapping for another crypto, and using crypto to purchase goods or services — is a capital gains event. Mining and staking income is taxed as income. HMRC has published detailed guidance, and the reporting obligations are extensive. Offshore reporting rules apply to crypto held on foreign exchanges.
UAE: No personal capital gains tax or income tax applies to crypto gains in the UAE. This is a significant driver of crypto-related relocation.
Germany: Until March 2026, crypto gains were tax-free for individuals after a 12-month holding period. Germany abolished this long-standing rule in April 2026; crypto gains are now generally subject to a flat rate of approximately 25% (plus solidarity surcharge) regardless of how long the asset was held. Investors who had relied on the 12-month exemption should take specific advice on transactions straddling the change.
Spain, France, Italy: Crypto gains are taxed as capital gains at rates broadly in line with other investment assets.
US citizens: US persons are taxed on worldwide income including crypto, regardless of residence. FBAR and FATCA reporting may apply to offshore crypto accounts.
The international tax treatment of crypto is complex and continues to evolve. Keeping accurate records of every transaction — including dates, amounts, and values at the time of each transaction — is essential regardless of jurisdiction.
How to hold crypto safely
Centralised exchanges (Coinbase, Kraken, Binance, and their regulated equivalents) — easy to use, regulated under MiCA and local frameworks, but carry counterparty risk. The exchange holds the private keys, not you. Exchange failures (FTX in 2022) have demonstrated the risks.
Self-custody (cold wallets) — hardware wallets (Ledger, Trezor) where the private keys never touch the internet. Maximum security but maximum responsibility — lose the seed phrase, lose the assets permanently. Not practical for large institutional holdings without proper key management procedures.
Regulated fund wrappers — Bitcoin ETFs (US, EU and UK equivalents), exchange-traded products, and investment funds provide regulated access to Bitcoin price exposure without the custody complexity. For HNW investors who want crypto exposure without managing wallets and keys, these are the most practical option.
Portfolio allocation considerations
For investors who decide to include crypto after proper consideration:
- A commonly cited range for risk-tolerant investors is 1–5% of investable assets allocated to Bitcoin or broader digital assets
- Below 1% has negligible portfolio impact — it becomes a rounding error
- Above 5% for most investors introduces volatility levels that dominate the portfolio's risk profile
- The allocation should be treated as a speculative asset class with genuine risk of total loss
DeFi protocols — lending, staking, yield farming on blockchain networks — carry additional layers of smart contract risk, liquidity risk and regulatory uncertainty. They are generally inappropriate for wealth preservation capital.
Tokenised assets: the emerging dimension
Beyond Bitcoin, Ethereum, and conventional altcoins, a growing area of the digital asset landscape is the tokenisation of real-world assets — the representation of conventional investment assets (bonds, equities, private credit, real estate) as tokens on a blockchain. This is distinct from cryptocurrencies and represents a genuine evolution of financial market infrastructure rather than a speculative new asset class.
Major financial institutions including BlackRock, JPMorgan, and Franklin Templeton have launched tokenised fund products on public blockchains, allowing fractional ownership and near-instantaneous settlement of assets that conventionally require multiple-day clearing cycles. The EU's DLT Pilot Regime has established a regulatory sandbox for tokenised securities in European markets.
For private investors, the practical relevance of tokenisation in 2026 is limited — most tokenised asset infrastructure is at the institutional level. However, it is likely to become part of the investment landscape over the next decade, and understanding the distinction between tokenised assets (regulated financial instruments on blockchain rails) and speculative cryptocurrencies (unregulated digital tokens) will become increasingly important.
Frequently asked questions
Is Bitcoin legal in the UK? Yes. Buying, selling, and holding Bitcoin is legal in the UK. Bitcoin is treated as a capital asset by HMRC. Crypto-asset service providers operating in the UK must register with the FCA. Certain promotional activities around cryptoassets became subject to FCA financial promotion rules in 2023, meaning only FCA-registered firms can legally promote crypto products to UK consumers.
Do I need to declare crypto gains on my UK tax return even if I live abroad? If you are not UK tax resident, UK CGT does not apply to your disposals of most assets — including cryptoassets. However, if you are UK resident (even part of the year under the Statutory Residence Test), you must report and pay CGT on crypto gains. As a non-resident, you should declare any UK-source income that remains within UK tax scope, but crypto gains are generally not UK-situs for non-residents. Confirm your specific position with a tax adviser.
What records do I need to keep for crypto taxation? HMRC requires records of every disposal — the date, the crypto involved, the amount disposed of, and the market value in sterling at the time. For frequent traders or those who have swapped between currencies multiple times, this can involve hundreds of transactions. Specialist crypto tax software (Koinly, CoinTracker, and others) can import transaction histories from exchanges and calculate gains automatically.
What should I do about crypto I bought years ago and have not declared? HMRC has written to thousands of UK crypto holders identified through exchange data sharing and has issued detailed guidance on its expectations. Voluntary disclosure of historic gains is always preferable to HMRC initiating an enquiry. The Contractual Disclosure Facility (CDF) and Code of Practice 9 provide formal voluntary disclosure routes. Seek tax advice before approaching HMRC.
How Global Investments can help
We take an objective, client-centred view of digital assets. If you are considering crypto allocation within a broader international portfolio, or have existing holdings that need to be incorporated into financial and tax planning, we can help you assess the role and manage the compliance.
Contact us to discuss your investment strategy.
This article reflects market conditions and regulatory status as of June 2026. Cryptocurrency markets are highly volatile and regulatory frameworks are evolving. This does not constitute investment advice. Past performance does not predict future results. Capital is at risk.
This article is for general information only and does not constitute financial, legal or tax advice. Rules, prices and regulations change; verify current requirements with a qualified adviser before acting.