MLRO Meaning: What a Money Laundering Reporting Officer Does

What does MLRO mean?

MLRO usually means Money Laundering Reporting Officer. In many firms the person is also described as the nominated officer. The job is to receive internal suspicious activity reports, assess whether suspicion exists, decide whether external reporting is needed, and keep records that explain the decision.

HMRC's money laundering supervision responsibilities make clear that supervised businesses need internal controls and monitoring systems appropriate to their size and complexity. The MLRO is central to making those controls work in practice.

What does an MLRO do?

An MLRO typically:

• Maintains the internal reporting route.
• Reviews staff concerns without tipping off the client.
• Decides whether the facts create knowledge, suspicion, or reasonable grounds for suspicion.
• Records why a SAR was or was not submitted.
• Keeps evidence of AML decisions.
• Helps train staff on red flags and escalation.
• Reports weaknesses in controls to senior management.

What should an internal report include?

Staff should report facts, not conclusions. A useful internal report includes:

• Client or matter details.
• The unusual fact or behaviour.
• Dates, amounts, parties, and documents involved.
• What the client said.
• What evidence has been reviewed.
• Why the staff member is concerned.

What should the MLRO record?

The MLRO's decision note should separate:

Area	Record
Facts	What happened and what evidence exists.
Analysis	Why the facts do or do not create suspicion.
Decision	SAR, no SAR, more information, pause, exit, or continue.
Date and reviewer	Who decided and when.
Follow-up	Monitoring, review date, or control improvement.

Common mistake

The common mistake is making the decision informally and leaving no audit trail. A defensible "no SAR" decision still needs a record.

This guide is general information and does not replace legal advice or the firm's AML policies.