Perspectives · Financial crime

What a KYC refresh cycle is, and what triggers one early

A KYC refresh cycle is the schedule on which a firm reviews what it knows about an existing customer: identity, ownership, purpose and risk. UK rules do not set one interval for everyone. They require ongoing monitoring, reviews at appropriate times on a risk based approach, and a fresh look when circumstances change. This perspective is general information, not legal advice.

Week 45, published 10 November 2026 · Financial crime

The definition

Keeping customer due diligence current

Know your customer, or KYC, is the customer due diligence a firm carries out before it starts a relationship. A refresh repeats the parts that can change: who owns and controls the customer, what it does, what it uses the relationship for and what risk it presents.

The refresh cycle is the firm's rule for how often that happens for each customer, and what brings it forward.

The rules

What the Money Laundering Regulations ask

Regulation 28(11) of the Money Laundering Regulations 2017 requires ongoing monitoring of a business relationship, including reviewing existing records and keeping customer due diligence documents and information up to date.

Regulation 27(8) requires due diligence to be applied to existing customers at other appropriate times on a risk based approach, and when the firm becomes aware that circumstances relevant to its risk assessment of the customer have changed. The FCA describes the Regulations as setting a risk based approach to anti money laundering.

The interval

Intervals follow risk, not the law

Because the Regulations do not fix a period, firms set their own in their policies, usually tied to the risk rating given at the last review. For example, a firm might review high risk customers every year, medium risk every two or three years and low risk less often. These are common choices, not legal requirements.

What matters is that the interval is written down, applied consistently and recorded on each customer, so that a missed review can be seen.

The triggers

Events that bring a review forward

Regulation 27(9) lists matters a firm must take into account in deciding when to review an existing customer, among others: any sign that the identity of the customer or its beneficial owner has changed, transactions not reasonably consistent with what the firm knows of the customer, and any change in the purpose or intended nature of the relationship.

In practice, common triggers include a change of ownership or directors, a new jurisdiction in the structure, an unexpected payment pattern and a new screening match. Each should start a review whatever the calendar says.

In Alethia

Next review dates and refresh cases

In Alethia, each KYC decision can set the next review date, either from a review interval your workspace has adopted for the risk rating or by choosing a date. The entity shows when its next review is due or overdue, and a refresh can be opened as a new case for a relationship you already have.

Questions

KYC refresh cycles, answered

Does UK law say how often KYC must be refreshed?

Not as a single period. The Money Laundering Regulations 2017 require ongoing monitoring, reviews at appropriate times on a risk based approach, and a review when relevant circumstances change. Firms set their own intervals.

What is a trigger event?

Something that changes what the firm knows about the customer or its risk, such as a change in beneficial ownership or transactions that do not fit the customer's profile. Regulation 27(9) lists matters of this kind.

Is a refresh a full repeat of onboarding?

Not necessarily. Regulation 28(12) says the extent of the measures must reflect the firm's risk assessment and may differ from case to case. Many refreshes confirm what has not changed and update what has.

Put the next review on every file

Record a next review date with each KYC decision, so overdue reviews are visible before anyone has to go looking for them.