Source of Funds (SoF) and Source of Wealth (SoW) checks are not new concepts for conveyancing teams. What has changed significantly is the regulator’s scrutiny and the expectation that firms can demonstrate compliance beyond simply collecting documents.
The Regulatory Framework: What Firms Are Expected to Do
Under the Money Laundering Regulations 2017 (as amended), firms are required to conduct Customer Due Diligence (CDD), apply Enhanced Due Diligence (EDD) where appropriate, and carry out ongoing monitoring of the business relationship.
Regulation 28 in particular requires firms to scrutinise transactions to ensure they are consistent with what they know about the client and the client’s risk profile.
The Legal Sector Affinity Group (LSAG) Guidance reinforces the principle of proportionality. Firms must adopt a risk-based approach, but that approach must be evidenced.
Simply holding a bank statement on file is not enough. Firms need to be able to demonstrate:
- why the evidence collected was appropriate to the risk
- that inconsistencies were identified and addressed
- that decisions were properly recorded
Where firms are criticised, it is rarely because nothing was done at all. More often, it is because red flags were missed, escalation processes were not followed, or the file does not clearly explain how the firm reached its conclusion.
Source of Funds vs Source of Wealth: The Practical Distinction
Confusion between SoF and SoW remains a common weakness in many practices.
Source of Funds is about the specific money being used for the transaction. In conveyancing terms, that usually means the deposit, the balance of purchase funds, and any gifted contribution. SoF enquiries should answer the question: “Where did the money for this transaction come from, and can we trace it?”
Source of Wealth is broader. It is about how the client acquired their overall wealth in the first place. SoW enquires should answer: “How did this person come to have this level of wealth?”
In routine residential conveyancing, SoW may not always be required. However, where risk indicators arise for example Politically Exposed Persons (PEPs), high-risk jurisdictions, complex corporate structures, significant unexplained funds, or transactions that do not align with the client profile, the firm must be prepared to look beyond the immediate transaction funds and consider the wider picture.
How Challenges Show Up in Conveyancing Teams
Conveyancing departments operate under significant commercial and operational pressure. That pressure often creates predictable behaviours around Source of Funds. The most common issues tend to fall into four categories.
1. Delayed checking
SoF is sometimes treated as an onboarding task that can be finalised later. When checks are delayed, they are often completed under time pressure just before exchange or completion. That increases risk and reduces objectivity.
2. Over-collection of documents
Where conveyancers are unsure what “enough” looks like, they collect excessive documentation. Multiple months of statements, repeated requests and unnecessary documents may still fail to address the core issue: whether the funds are legitimate and traceable.
3. Under-questioning
At the other end of the spectrum, some teams accept documents at face value. Screenshots, unexplained transfers, or third-party contributions may not be properly tested. This is where firms are most exposed – particularly as falsified documentation is now easier to produce and harder to detect than ever.
4. Inconsistent escalation
Many firms have an escalation process, but the threshold is unclear. Fee earners may hesitate to escalate concerns due to fear of delaying the transaction or appearing overly cautious. This creates inconsistency across a department.
Managing Client Friction
Client resistance is a common feature of SoF checks. In most cases, friction arises not from the checks themselves, but from how they are handled.
Firms that manage this well tend to do the following consistently:
- set expectations at the outset.
- explain clearly why the information is required.
- provide structured guidance on what to supply.
- avoid making ad hoc requests late in the transaction.
Framing matters and clients respond better when Source of Funds enquiries are positioned as a professional obligation and a standard regulatory requirement, rather than a discretionary request.
Too Much vs Too Little: Finding the Balance
The regulator expects proportionality and too little checking might include:
☒relying on a single bank statement without analysis.
☒accepting third-party funds without verifying the source.
☒ignoring inconsistencies between the client’s profile and the transaction.
☒failing to record reasoning.
Too much checking can include:
☒treating every matter as high-risk without justification.
☒requiring excessive documentation without a clear trigger.
☒causing unnecessary delay and client dissatisfaction.
The appropriate balance begins with a meaningful matter risk assessment. The depth of SoF or SoW checks should flow directly from that assessment. Understanding your client and the transaction is key.
Practical Steps to Improve Defensibility
Firms do not usually need wholesale reform to strengthen their position. The most effective improvements come from tightening the fundamentals and applying them consistently across the conveyancing team. The regulator is looking for structure, proportionality and evidence of thought rather than complexity.
Firms benefit from setting minimum standards and clear escalation triggers. Fee earners need certainty about:
- what evidence is expected in standard domestic transactions.
- what additional information is required in higher-risk scenarios.
- when concerns should be escalated to compliance.
Another quick win is improving file notes. A regulator should be able to open a file and understand, in a matter of minutes, what was reviewed and why the firm was satisfied. A defensible file note should capture:
- the narrative of the funds.
- the documents reviewed and any anomalies identified.
- whether escalation took place.
- the conclusion and rationale.
Training also plays a critical role, but it must go beyond providing a list of documents to obtain. Conveyancers need confidence in recognising red flags, asking appropriate questions and identifying inconsistencies. The risk sits in the judgement applied, not in the paperwork alone.
Finally, firms should standardise their approach to higher-risk scenarios. Gifted deposits, third-party contributions and overseas transfers are common areas of weakness in conveyancing files. Where teams improvise, inconsistency follows and typically so does compliance exposure.
Technology can support all of this by strengthening audit trails, reducing administrative burden and improving workflow consistency. However, it cannot replace professional judgement. The ultimate responsibility for assessing Source of Funds and defending that assessment remains with the firm and the relevant individuals within that firm.
Conclusion
Source of Funds enquiry and assessment is a core risk control within conveyancing practice. The regulator is not demanding perfection but rather looking for evidence of proportionate, risk-based judgement. Firms that can demonstrate clear reasoning, consistent processes and proper documentation are in a far more defensible position should they be scrutinised.