UK’s FCA says crypto apps may need licenses when algorithms choose trade routes
Britain's financial watchdog warned that crypto trading apps could need regulatory approval if their software decides customer transactions.
In draft guidance published Oct. 21, the Financial Conduct Authority (FCA) said applications that select trading venues or transaction routes based on assessments of price, liquidity, costs or execution speed may be arranging crypto deals, an activity requiring authorization under rules taking effect in October 2027.
The interpretation could bring decentralized finance (DeFi) aggregators and automated trading interfaces within the UK's licensing regime, potentially forcing operators to obtain regulatory permission or change how their software handles customer trades.
The proposal forms part of the FCA's efforts to define which crypto businesses qualify for exemptions from the new framework, scheduled to take effect on Oct. 25, 2027.
DeFi trading algorithms face licensing scrutiny
The FCA's consultation focuses on a technical-services exemption intended to protect software providers whose applications simply connect customers to third-party trading platforms or decentralized protocols.
Under the proposed interpretation, an interface that transmits customer instructions without influencing their execution may qualify for the exemption. However, applications that evaluate competing liquidity sources, recommend trading venues, or determine how transactions are executed could be performing activities that require regulatory authorization.
Algorithms can execute choices established by their providers, including criteria that determine which exchanges or liquidity sources receive customer orders.
That distinction matters for DeFi aggregators, which often compare prices and liquidity across decentralized exchanges to identify execution routes for customers.
The regulator identified several indicators of discretionary involvement, including modifying transaction instructions, determining execution timing and selecting routes based on counterparty risk or expected trading outcomes.
Compliance challenges for DeFi businesses
The FCA said distributed governance, smart contracts and automated systems do not automatically eliminate regulatory obligations where identifiable individuals or businesses exercise control over services.
Those provisions could complicate compliance arrangements for DeFi businesses whose developers, governance participants and commercial operators share responsibility for maintaining trading infrastructure.
The uncertainty comes as the FCA's authorization window is already open. Existing UK crypto businesses seeking transitional protections must submit applications between Sept. 30, 2026, and Feb. 28, 2027.
The regulator has requested feedback on its proposals by Nov. 18. Its website targets January 2027 for final guidance, although the consultation paper identifies spring 2027, potentially leaving affected businesses with limited time to determine their licensing requirements.
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