Enhanced due diligence is standard due diligence carried further for the customers who warrant it. The phrase gets used as though it meant more paperwork, and the extra paperwork is the smallest part of it. What actually changes is the question you are answering: not only who this customer is, but where their money comes from, and how often you intend to look again. This page is about both halves.
The question changes, not just the folder
Standard due diligence answers who the customer is. Enhanced due diligence answers where the wealth and the funds come from, which is a different kind of evidence and a different kind of judgement. It usually means understanding the customer's business or income well enough to say whether the activity you expect from them makes sense. That is why an EDD file cannot be a checklist alone: it has to carry a written rationale that another person could read and follow.
Who gets it, and who decides
The trigger is the risk rating, and the rating comes from your own policy: product, geography, channel, ownership structure, and whether the customer or their owners fall into categories your policy treats as higher risk. Some categories are named in rules, such as certain correspondent and private banking relationships. The important discipline is that the trigger is written down before the customer arrives, so the decision to escalate is a policy being applied rather than an argument being had.
The shorter clock is the real cost
Firms budget for the extra evidence and forget the interval. An enhanced file typically comes back for review much sooner than a standard one, and it comes back with the same demand for a written rationale. Over a year, the review load from a small number of enhanced customers can exceed the onboarding load from a large number of standard ones. The free checklist on this site is built to show exactly that, because it takes the review interval per rating as an input rather than assuming one cycle for the whole book.
Questions people ask about enhanced due diligence
What is enhanced due diligence in one line?
The same due diligence, carried far enough to understand where the money comes from, with a written rationale and a shorter review interval.
Is enhanced KYC the same as EDD?
In everyday use, yes. Enhanced KYC is the looser phrase and EDD is the one that appears in policies. Nobody inside a firm gains anything by distinguishing them, as long as the file says which level was applied and why.
How do we prove we did enhanced due diligence?
With a record rather than a memory: the rating and its reason, the additional evidence attached to the file, the written rationale, the person who approved it, and the date of the next review. If those five things are on one record, the proof is opening it.