UK Lawmakers Write to Bank CEOs Over Crypto Account Refusals: What Accounting Firms and CFOs Must Assess Now
A group of UK Members of Parliament has written directly to the chief executives of major British banks, calling on them to explain why they have refused or withdrawn banking services from cryptocurrency businesses. The intervention, reported on 11 August 2026, marks a significant escalation: what had until now been treated as a commercial dispute between crypto firms and their banks is now the subject of formal parliamentary attention. For accounting firms, auditors, and CFOs whose clients include digital asset businesses, the political signal matters as much as any immediate regulatory change.
Background: The Debanking Problem in UK Crypto
Crypto businesses in the United Kingdom have complained for years that high-street and challenger banks routinely refuse to open accounts for them, or close existing accounts without adequate explanation. The complaints span the full spectrum of the sector: regulated exchanges, custodians, brokers, and even accounting firms that hold client funds related to digital asset activity have reported difficulties. Critics argue that banks are applying blanket exclusions rather than conducting the individual, risk-based assessments that anti-money-laundering rules actually require.
Why Banks Have Taken a Cautious Stance
Banks cite several overlapping concerns. Digital asset businesses are perceived as carrying elevated AML and sanctions risk, partly because the sector has historically attracted a disproportionate share of enforcement actions. The compliance cost of monitoring crypto-related transaction flows is also genuinely higher than for conventional retail or corporate clients, given the pseudonymous nature of on-chain activity and the evolving regulatory perimeter. In addition, banks face their own prudential pressures: a single high-profile enforcement failure linked to a crypto client can trigger significant regulatory consequences for the bank itself.
None of that, however, justifies a categorical refusal to serve an entire industry. UK AML rules, derived from the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017 and subsequent amendments, require firms to apply a risk-based approach. A blanket policy that excludes all crypto businesses regardless of their individual risk profile sits uncomfortably with that obligation, a tension that the parliamentary letters appear designed to highlight publicly.
The Regulatory Registration Context
It is also worth placing the banks' caution in the context of the Financial Conduct Authority's crypto registration regime. Since 2020, UK crypto businesses that fall within the scope of the Money Laundering Regulations have been required to register with the FCA. The FCA has maintained a high bar for registration, and a significant number of applicants have either been rejected or withdrawn their applications. For banks, an unregistered crypto business is, almost by definition, a higher-risk customer. But FCA-registered firms, which have been through a substantive AML review, arguably present a very different risk profile, and it is unclear whether banks are consistently distinguishing between the two categories.
What the Parliamentary Letters Signal
The decision by MPs to write directly to bank CEOs, rather than simply raising the matter in committee or correspondence with the Treasury, carries a specific message. It frames debanking as a matter of accountability at the highest level of bank leadership, not a mid-level compliance decision. It also creates a paper trail: if banks do not respond substantively, or if their responses are seen as inadequate, the matter can be escalated to the Treasury Select Committee or raised on the floor of the House.
Potential Policy Responses
Parliamentary pressure of this kind does not automatically produce legislative change, but it frequently precedes it. Several policy responses are plausible. The Treasury or the FCA could issue fresh guidance clarifying that risk-based assessment, not categorical exclusion, is the expected standard when banks evaluate crypto business clients. There could be a requirement for banks to provide written reasons when they decline or terminate an account, a measure that has already been discussed in the broader debanking debate following controversies in 2023 and 2024. A formal inquiry by the Treasury Select Committee is also a realistic outcome if the banks' responses are seen as evasive.
Any of these developments would have direct implications for crypto businesses and, by extension, for the firms that account for and audit them. If banks are required to adopt genuinely risk-based onboarding, more crypto businesses will be able to maintain sterling bank accounts, which simplifies treasury management, payroll, and VAT compliance for those businesses and reduces the operational friction that currently makes their financial statements harder to audit cleanly.
Accounting and Audit Implications for Firms and CFOs
The debanking problem is not simply a political or commercial inconvenience. It creates concrete accounting and audit complications that practitioners need to understand and document carefully.
Going Concern and Cash Flow Disclosures
When a crypto business loses its bank account, or cannot obtain one, its ability to settle fiat obligations, pay staff, and meet tax liabilities in sterling is impaired. For auditors, that raises a going concern question that must be addressed explicitly in the audit report if there is material uncertainty. FRS 102 and IFRS both require management to assess going concern over a period of at least twelve months from the date of approval of the financial statements, and the loss of banking access is precisely the kind of operational constraint that can bring that assessment into doubt. Audit files for crypto clients should document how the entity is managing fiat liquidity, what contingency arrangements exist, and whether the current situation has been disclosed appropriately.
Client Onboarding and AML Obligations for Accounting Firms
Accounting firms that take on crypto business clients are themselves subject to the Money Laundering Regulations and must conduct their own risk-based due diligence at onboarding and on an ongoing basis. The fact that a client has been refused banking services by one or more banks is a relevant risk indicator: it may signal regulatory concerns about the client's AML controls, or it may simply reflect the bank's blanket exclusion policy. Practitioners need to distinguish between the two, and their client risk assessments should record that analysis explicitly.
Firms using digital asset accounting software to manage client ledgers should ensure that the audit trail captures the client's banking status, any account terminations, and the dates on which alternative arrangements were put in place. This is not just good practice; it is the kind of documentation that will be expected if the firm's own AML compliance is ever reviewed by a supervisory body such as the ICAEW, ACCA, or CIOT.
Treasury and Liquidity Risk for CFOs
For CFOs at crypto-adjacent businesses, the parliamentary intervention introduces both a short-term and a medium-term consideration. In the short term, if political pressure does produce faster bank onboarding or a reduction in arbitrary account closures, treasury teams should begin refreshing their banking relationships. A business that has been relying on payment processors or e-money institutions as a substitute for a full current account may find that a conventional bank account is now within reach, and the cost savings and operational simplicity can be material.
In the medium term, CFOs should track whether the FCA or the Treasury issues fresh guidance on the debanking issue. Any such guidance is likely to affect the internal compliance frameworks of the banks, which in turn affects what documentation a crypto business needs to provide to open or maintain an account. Getting ahead of that documentation requirement, by preparing a clear AML risk summary, a description of transaction monitoring controls, and evidence of FCA registration where applicable, reduces the friction in any future bank onboarding process.
What Firms Should Do Now
The parliamentary letters have not yet produced any change in law or regulation. However, the direction of travel is clear enough to warrant action in three areas.
Review Client Banking Arrangements
Accounting firms with crypto business clients should review whether those clients currently hold a functional sterling bank account and, if not, how they are managing fiat settlement. This is relevant both for going concern assessments and for understanding the client's overall risk profile. Where a client has been refused banking services, document the reasons given and consider whether those reasons warrant enhanced due diligence on the client relationship itself.
This theme connects directly to wider AML scrutiny in the UK crypto sector. The case of a UK money laundering suspect behind a major DeFi token purchase illustrates how quickly regulatory and law enforcement attention can focus on individuals or entities that appear, on the surface, to be ordinary crypto market participants. Banking refusals sometimes reflect legitimate suspicion; due diligence needs to establish which category a client falls into.
Monitor the Regulatory Response
Practitioners should track any guidance issued by the FCA or the Treasury in response to the parliamentary intervention. The FCA's financial crime guidance (FCG) and its crypto registration guidance are the most likely vehicles for any updated expectations around bank onboarding of crypto firms. Firms that already have robust crypto bookkeeping software workflows for tracking client regulatory status will find it easier to update client files quickly when new guidance arrives.
The UK situation is part of a broader global pattern of regulators pressing financial institutions to apply genuine risk-based analysis rather than categorical exclusions. Comparable pressure is visible in other jurisdictions, including the tightening of VASP registration requirements that we covered in the context of FSC Korea tightening VASP registration requirements ahead of its own August 2026 deadline.
Prepare Documentation for Bank Onboarding
If political pressure does produce a loosening of bank access for crypto businesses, the window between a change in bank policy and a new wave of applications will be short. Crypto clients should begin assembling the documentation that banks typically require: corporate structure charts, ultimate beneficial owner declarations, AML policy summaries, transaction monitoring procedures, and evidence of FCA registration. Accounting firms can add genuine value by helping clients prepare this pack now, rather than scrambling when a bank invitation arrives.
Frequently Asked Questions
Are UK banks legally required to provide accounts to crypto businesses?
No. UK banks are not under a general legal obligation to serve any particular category of customer. However, they are required by the Money Laundering Regulations to apply a risk-based approach to customer due diligence, which means individual assessment rather than blanket exclusion based on industry sector. A categorical refusal to serve all FCA-registered crypto businesses, regardless of their individual risk profile, sits in tension with that obligation, which is precisely the point the parliamentary letters appear to be making.
What should an auditor do if a crypto client has lost its bank account?
The auditor should assess whether the loss of banking access creates material uncertainty about the client's ability to continue as a going concern. If it does, that uncertainty must be disclosed in the financial statements and referred to in the audit report, in line with ISA (UK) 570. The auditor should also consider whether the circumstances warrant enhanced scrutiny of the client's fiat liquidity management and whether alternative payment arrangements introduce any additional financial reporting risks.
Does a bank's refusal to serve a crypto firm affect the accounting firm's own AML obligations?
It is a relevant factor in the accounting firm's client risk assessment, but it does not automatically require the firm to decline or exit the client relationship. The firm should investigate the reasons for the banking refusal, document that investigation, and adjust the client's risk rating accordingly. If the refusal reflects credible AML concerns about the client, that would ordinarily warrant a Suspicious Activity Report to the National Crime Agency and a review of whether the relationship can continue.
How does FCA registration affect a crypto business's chances of obtaining a bank account?
In principle, FCA registration should reduce perceived AML risk because the registration process involves a substantive review of the firm's AML controls. In practice, many banks have not distinguished consistently between registered and unregistered firms. The parliamentary intervention may encourage banks to formalise that distinction, which would benefit registered firms significantly.
What documentation should a crypto business prepare to support a bank account application?
Banks carrying out enhanced due diligence on a crypto business typically require: a full corporate structure chart with ultimate beneficial owner identification; copies of FCA registration or application confirmation; a written AML and KYC policy; a description of transaction monitoring procedures; a summary of the business model and expected account usage; and, where relevant, audited financial statements. Preparing this pack in advance of any formal application materially shortens the onboarding process.
Source: Decrypt