AML Red Flags for Accountants and Law Firms
In brief: AML red flags are facts or behaviours that should make a firm pause, gather evidence, reassess risk, and escalate where suspicion may exist.
Key points
- A red flag is not proof of wrongdoing, but it must be assessed and recorded.
- The strongest red flags involve inconsistent explanations, hidden ownership, unusual funds, pressure, or avoidance of checks.
- Good AML records show what changed, what evidence was reviewed, and why the firm made its decision.
What is an AML red flag?
An AML red flag is a fact, behaviour, document issue, or transaction pattern that indicates higher money laundering risk. It does not prove criminal conduct. It does mean the firm should pause, assess the risk, request proportionate evidence, and escalate internally if suspicion may exist.
For accountants and law firms, red flags often appear in ordinary work: onboarding, bookkeeping, tax returns, accounts preparation, property transactions, company formations, payroll, probate, or business sales.
Client behaviour red flags
- The client refuses or delays identity, ownership, or source-of-funds checks.
- The client pressures the firm to act before checks are complete.
- Explanations change when basic questions are asked.
- The client appears unusually unconcerned about fees, tax, or commercial outcomes.
- The client asks the firm to avoid normal procedures.
Document and evidence red flags
- Documents are incomplete, inconsistent, or hard to verify.
- Bank statements do not match the stated source of funds.
- Invoices do not match the client's trade or capability.
- Ownership records are outdated or contradict Companies House filings.
- The client provides screenshots instead of original or reliable evidence.
Ownership and control red flags
- Complex structures with no clear commercial purpose.
- Nominee-like directors or shareholders.
- Beneficial owners who avoid contact.
- Control exercised by someone not named in formal records.
- Sudden changes in ownership before a transaction.
Source-of-funds and source-of-wealth red flags
- Large funds appear from an unexplained third party.
- The source of wealth does not match the client's known profile.
- Funds are routed through several accounts without a clear reason.
- Loans are undocumented or commercially odd.
- The client treats bank acceptance as proof that the funds are legitimate.
What to do when a red flag appears
Use a consistent workflow:
- Record the red flag in plain language.
- Reassess the client or matter risk rating.
- Request proportionate evidence if appropriate.
- Consider enhanced due diligence.
- Escalate to the MLRO or nominated officer if suspicion may exist.
- Record the outcome and rationale.
Role-based responsibilities
| Role | What good looks like |
|---|---|
| Partner or director | Sets the risk appetite and supports decisions to pause, decline, or exit work. |
| MLRO or nominated officer | Reviews internal reports, decides on SAR escalation, and keeps decision records. |
| Client-facing team | Spots changes, records facts, avoids tipping off, and follows internal escalation routes. |
| Admin or onboarding team | Ensures identity, ownership, screening, and evidence checks are complete before work starts. |
Training point
Red flags should be taught as patterns, not memorised lists. Staff need to know what to do next: document, verify, reassess, and escalate.
This guide is general information for regulated firms and is not legal advice.