The overseas buyer is where a lot of firms relax at exactly the moment they should tighten. The passport looks official, the deposit clears, the deal is real, and the instinct is to treat the file like any other. Under Tranche 2 that instinct is the problem. A buyer based offshore, paying through structures you cannot see into, with money that crossed 2 borders to reach you, is close to the textbook description of higher risk.
I have watched good firms run thorough identity checks and still miss the point. Verifying who someone is tells you nothing about where their money came from, or how they came to have it. For a cross-border purchase, those 2 questions are the actual work.
A principal once showed me a file on an overseas buyer he thought was clean. Passport verified, identity box ticked, settlement moving. What was missing was everything that matters for a buyer like this. No source of funds, so no one knew where the deposit had come from. No source of wealth, so no one knew how the buyer had the money at all. And the contract named an offshore company that nobody had looked through. The funds were wired from a third country, not the buyer’s home, which on its own should have slowed the deal down. None of that is exotic. It is the normal shape of a cross-border purchase, and it is exactly where a front-desk version of CDD falls short.
Source of funds and source of wealth are not the same thing
This is the distinction that decides most overseas-buyer files, and it is the one people blur together. Getting it right is most of enhanced due diligence.
Source of funds is narrow and specific. It is where the money for this particular purchase came from: the sale of a property, a bank loan, a gift from a parent, a distribution from a business. You establish it to confirm the deposit and settlement funds have a legitimate origin, and that the transaction fits what you already know about the buyer.
Source of wealth is wider. It is how the buyer came to their overall financial position in the first place: the business they built, years of income, an inheritance. You establish it to check that the whole picture has a lawful explanation, not just the one transfer sitting in front of you.
A buyer can show a clean source of funds for one deal and still have a source of wealth that makes no sense. That gap is where laundering hides.
Figure 1. Source of funds is the origin of the money for this transaction. Source of wealth is how the buyer built their overall position. For a high-risk overseas buyer, you establish both.
Work out who actually controls the buyer
The name on the contract is often a company or a trust, not a person. A beneficial owner is the individual who ultimately owns 25% or more of, or controls, that entity. For an offshore company you follow the ownership chain until you reach a real human being, and you verify them too.
Trust structures are where this gets slow. A company you can usually trace. A trust hands you a trustee, beneficiaries, a settlor and an appointor, and any of them can be the person you actually need to find. I have spent longer untangling a discretionary trust than the deal itself was worth. You still have to do it.
Check for foreign PEPs and jurisdiction risk
Run the buyer and the beneficial owners against politically exposed person status. A foreign PEP triggers enhanced due diligence automatically, with no risk judgment required first.
Then look at the countries in the picture: where the buyer lives, where the funds originate, where the structure sits. Links to higher-risk jurisdictions push the risk up. The FATF call-for-action and grey lists are the reference point, and they change, so check them at the time rather than from memory.
When the overseas buyer tips into enhanced CDD
Not every foreign buyer is high risk. A salaried professional emigrating and buying a home to live in can be straightforward. But several common features of cross-border deals push a file into enhanced due diligence, and you should know them before the deposit lands.
Trigger in a cross-border deal | What you do |
The buyer or a beneficial owner is a foreign PEP | Enhanced CDD is mandatory, no risk judgment needed first. |
Funds or the buyer are linked to a higher-risk jurisdiction | Enhanced CDD. Check the current FATF call-for-action and grey lists. |
A company or trust you cannot see through | Establish the beneficial owners, owning 25% or more or in control, before you proceed. |
You have to file an SMR but keep acting | Enhanced CDD applies. |
A deal with no clear economic purpose | Enhanced CDD. Establish source of funds and source of wealth. |
The rating that drives all of this comes from your customer due diligence process, and a tool that ties each buyer’s risk to the checks and the evidence trail saves you reconstructing it later.
The regulatory detail
Source of funds and source of wealth
The obligation to establish source of funds and source of wealth sits in the Act at section 26F, with the detail in section 5-2 of the AML/CTF Rules 2025. Your AML/CTF policies have to set out when you collect, or collect and verify, this information during initial and ongoing CDD. Source of funds is the origin of the money for a specific transaction. Source of wealth is how the customer accumulated their overall wealth.
When enhanced CDD is mandatory
You must apply enhanced due diligence in defined situations. These include where a customer is a foreign politically exposed person, where you are required to submit a suspicious matter report and intend to keep acting, where the customer or transaction connects to a higher-risk jurisdiction, and where the ML/TF risk is otherwise high. Enhanced measures include establishing source of funds and source of wealth, and obtaining senior management sign-off.
Beneficial ownership
A beneficial owner is an individual who directly or indirectly owns 25% or more of, or controls, the customer. Where ownership runs through companies or trusts, you follow the chain to the individuals at the end of it. This is part of initial CDD and you keep it current through ongoing CDD.
Where this fits your risk assessment
None of this is ad hoc. Your risk assessment should already flag foreign customers, cross-border funds and opaque structures as risk factors, and your policies should say what you do when they appear. The overseas buyer is the case those policies exist for.
Common questions
What is the difference between source of funds and source of wealth?
Source of funds is where the money for a specific transaction came from. Source of wealth is how the customer built their overall financial position. For a high-risk overseas buyer you usually establish both.
Do I have to do enhanced CDD on every foreign buyer?
No. You do enhanced CDD when the risk is high, which for overseas buyers is common but not automatic. A foreign PEP, a higher-risk jurisdiction, or a structure you cannot see through will take you there.
How do I check the source of funds for an overseas buyer?
You collect and verify evidence of where the deposit and settlement money came from, such as a property sale, a loan, or a business distribution, using reliable and independent data. A loan from a regulated lender is often clear without much more.
Who is the beneficial owner of a company buying property?
The individual who ultimately owns 25% or more of, or controls, the company. If that owner is another entity, you keep following the chain until you reach a real person.
What if the buyer is a politically exposed person?
A foreign PEP requires enhanced due diligence as a matter of course. For domestic and international organisation PEPs, you apply enhanced measures based on the risk.
Sources
AUSTRAC, Source of funds and source of wealth (Reform)
AUSTRAC, Enhanced customer due diligence (Reform)
AUSTRAC, Politically exposed persons (Reform)
Anti-Money Laundering and Counter-Terrorism Financing Act 2006 (Cth)
