Source of funds and payment trail

Two different questions hide behind this topic and they are routinely confused. The first is where your money came from — source of funds. The second is how that money reached the developer and how anyone can see that it was you paying, for this specific unit — the payment trail. The first question is usually asked by a bank. The second matters more to you: without an unbroken trail it is hard to evidence your claim to the property and hard to explain where the money came from on the way back out, when you sell and repatriate the proceeds. Both files are built before the first payment, not after someone asks.

Why the bank and the developer ask

Customer and source-of-funds checks are a standard procedure for financial institutions worldwide. A bank has a duty to understand whose money passes through an account, and it applies that duty to every client alike. Being asked "where did this come from" is not an accusation; it is compliance.

The developer cares about something else: that the amount received maps unambiguously to one contract and one unit. It has to close the payment in its own records, and later evidence that the unit was paid for when it hands over and registers.

You need both outcomes at once: money that arrives without hold-ups, and the ability to show, years later, that the apartment was paid for by you and from your funds.

This page is about preparing for legitimate checks and passing them calmly, not about avoiding them. Any arrangement invented so that "nobody asks questions" achieves the opposite: it is exactly what creates the gaps in the trail that later cannot be explained.

What source-of-funds evidence is made of

The logic is simple: document the path of the money from how you earned or received it to the account the payment leaves from. The set depends on the source.

One rule runs through all of it: the document has to tie together an amount, a date and a person. A screenshot of a balance evidences nothing — it does not show where the balance came from.

The exact list of documents requested, the format they must be supplied in, and any translation or certification requirements differ by bank and by deal. There is no single universal list, and we deliberately do not invent one: ask your bank and the developer what they need before you transfer.

The payment trail: what ties money to the unit

A good trail looks boring: every payment can be matched to an invoice, a contract and a unit within a minute. Four things have to line up for that.

1. The payer is the buyer under the contract. The account holder name matches the name in the SPA, letter for letter. This is precisely where name-spelling mismatches surface — see name and passport consistency.
2. The payee is the party named in the contract. Take the bank details from the signed document or an official invoice, not from an email or a messenger note. Details sent separately and "urgently" should be confirmed with the developer through an independent channel.
3. The payment reference names the unit. Contract number, unit number, invoice number. A transfer with no reference is the most common origin of a future gap.
4. Amount and date match the invoice. One invoice, one payment where possible, without splitting and without rounding to whatever was convenient.

A note on currency and charges: the amount that reaches the developer can be smaller than the amount you sent because of intermediary bank fees. That difference has to be closed on paper — the developer should see that the shortfall is technical and confirm how it was settled.

Why a third-party payment causes trouble

This is the most frequent and the most expensive mistake. The buyer is one person, but the money leaves the account of a spouse, a parent, a business partner or a company. Technically the transfer clears. The trouble starts afterwards.

• A mismatch appears: the payment under the contract was made by someone who is not a party to it.
• The sending or the receiving bank may ask you to explain the relationship between payer and buyer.
• The developer may decline to credit the payment against your contract until that link is documented.
• On resale the question arises of whose money bought the property, and it comes back again when proceeds are moved out.

The conclusion is not that this can never be done. It is that it has to be arranged in advance and in writing: discuss it with the developer and the bank before transferring, record how the payment will be applied, and keep the document explaining the relationship between payer and buyer. Once the money has gone, your negotiating position is much weaker.

What to keep, and in what form

The file is assembled as the deal goes along, not reconstructed later. Each payment should leave behind a set of four items.

Practical filing: one folder per deal, subfolders by payment date, file names in the form "date — document type — amount". Paper originals and digital copies together. Keep a second copy somewhere other than an email account you could lose access to.

On retention periods we give no single number: they differ by jurisdiction and by situation. The useful benchmark is different — you will need these documents when you sell, possibly many years from now, so assume the file lives for the whole period of ownership and a while beyond it.

What a broken trail looks like

A break is a payment that cannot be tied to the contract and the unit. The usual forms:

• a transfer with no reference, or a reference like "payment as agreed";
• money sent by a third party with no written explanation;
• cash handed over without an official receipt from the developer;
• an amount that matches no issued invoice;
• a payment to bank details that appear neither in the contract nor on an official invoice;
• no receipt of funds, even though the money arrived.

While construction is under way a break usually bothers nobody — which is exactly why it goes unnoticed. It shows up at the exit: on resale, when the buyer and their lawyer reconstruct the payment history, and on repatriation, when a bank asks where the proceeds came from. Years later the missing documents are much harder to obtain: staff have changed, details have changed, archives are incomplete.

What to do before the first payment

1. Assemble the source-of-funds documents for your situation and check that they tie together an amount, a date and you.
2. Ask your bank what it will require for a transfer of this purpose and size, and get the answer in writing.
3. Confirm that the account holder name matches the buyer name in the contract.
4. Take the payee details only from the contract or an official invoice, and verify them through an independent channel.
5. Agree the wording of the payment reference with the developer in advance.
6. Open the file folder and put the first set of documents in it on the day of payment, not later.

Build an evidence map for each material payment

For every instalment connect five elements: the economic event that created the money; the document evidencing that event; receipt into the fund owner's account; every later transfer and currency conversion; and final credit to the seller under the identified SPA and invoice. An account balance proves availability but does not by itself explain how the money was earned or acquired.

It is useful to distinguish the source of the specific funds being sent from the wider source of the buyer's wealth where enhanced review is required. A short narrative should identify dates, amounts, currencies, parties, document numbers and the matching annexes without contradicting the bank statements.

Multiple sources need a contribution register

Where one payment combines salary savings, asset-sale proceeds, dividends and existing capital, record each contribution: source, amount, currency, receipt date, supporting document, account and allocation to the instalment. Preserve statements before and after the funds are combined. A later closing balance may no longer show which portion came from which source.

A transfer between the buyer's own accounts is a route step, not the original source. Where money passed through a broker, deposit, company, currency exchange or joint account, add the evidence for each transition and explain its economic purpose. Show interest, charges and foreign-exchange differences separately rather than forcing the numbers to match retrospectively.

Gift, loan, dividend and company money are different sources

When the funds did not arise from the buyer's ordinary personal income, name the legal and economic basis precisely. A gift needs the parties, relationship where relevant, instrument and actual transfer; a loan needs its agreement, disbursement, repayment terms and lender; inheritance needs the succession instrument and receipt; a dividend needs entitlement, corporate approval and the financial and tax trail.

For a company-funded payment, also document incorporation, beneficial owners, business purpose, authority for the distribution or payment on behalf of the buyer and its accounting treatment. CAFIU's due-diligence framework requires understanding ownership and control of legal persons and, in higher-risk cases, reasonable measures concerning source of funds and wealth. A corporate transfer does not become the buyer's personal income merely because its payment reference says so.

Pre-agree crediting and refunds for a third-party payer

Before transfer, obtain written alignment from the seller, sending bank and, where practicable, receiving bank. The document should identify payer and buyer, their relationship, the legal basis for providing the money, SPA, project, unit, invoice, amount and confirmation that the receipt fully discharges the buyer's corresponding obligation.

State separately who receives a refund and to which account if the deal is cancelled, the amount is overpaid or the bank returns the transaction. Crediting under the SPA does not itself decide title share, debt between payer and buyer or tax treatment. Those relationships require separate documentation, and the refund route should not be designed for the first time after a dispute.

Wire-transfer data forms part of the evidence

Originator name, account or unique reference, beneficiary information and payment purpose should match the bank profile, SPA and invoice. CAFIU's wire-transfer directive requires relevant cross-border transfers to carry identifying originator, beneficiary and purpose information, and requires beneficiary institutions to apply risk-based rules on executing, rejecting or suspending transfers with missing information.

The KHR 4,000,000 or foreign-currency-equivalent figure in the CDD directive is a due-diligence threshold for remittance and wire transfers. It is not a lawful-transfer cap or a promise that a smaller transfer will escape review. Avoid destructive abbreviations and do not split a transaction to evade controls: linked operations may be considered together.

Answer a bank request with one versioned case file

Preserve the original request, receipt date, response deadline and exact questions. Prepare one concise chronology followed by a table mapping each question to an answer, annex and page. Give the package a version number and reconcile responses sent through support, the relationship manager and email.

Provide statements and contracts in the scope requested without altering transaction context. Agree the translation format where documents are in another language. State gaps openly and identify substitute evidence. CAFIU's framework is risk-based and permits enhanced due diligence, so a bank may reasonably request additional material after reviewing the first package.

Treat a suspended, returned or short payment as an incident

Do not send a second full amount until the status of the first transfer is established. Obtain the sending bank's investigation or trace reference, the seller's confirmation of non-receipt or partial receipt and, where the bank can disclose it, the reason for suspension, return or deduction. Log the original amount, charges, net credit, return date and revised route.

Address the contract in parallel: notify the seller before the deadline, provide evidence of timely initiation and request a written extension, penalty waiver or other agreed result. A bank investigation does not automatically move the SPA due date. After resending, obtain a new receipt, updated balance and confirmation that the original transfer cannot later be credited as a duplicate.

Keep one evidence chain from acquisition to exit

The permanent file should include source documents, original and intermediate statements, conversion evidence, invoices, payment orders, wire messages, seller receipts, total-price reconciliation, tax and registration evidence, refunds and corrections. Record the original filename, receipt date, issuer and the payment to which each file relates.

Cambodian AML rules require relevant reporting entities to retain specified records for at least five years, but that minimum for a bank or another obliged entity is not the buyer's retention period. A property may be sold much later, and a future bank may revisit the original acquisition, taxes and capital source. The owner should therefore keep the file throughout ownership and until the sale and outward remittance are fully completed.

Sources for the added context

Source URLs are kept in the research file and are not published as external links.

• [1] Law on Foreign Exchange — international settlements and capital flows through authorised intermediaries; physical-cash declarations and bank reporting are separate mechanisms, Articles 5, 13 and 17 — Kingdom of Cambodia; National Bank of Cambodia — 22.08.1997
• [2] Law on Anti-Money Laundering and Combating the Financing of Terrorism — customer due diligence, enhanced measures, record keeping and reporting-entity obligations — Kingdom of Cambodia; Cambodia Financial Intelligence Unit — 27.06.2020
• [3] Directive on Customer Due Diligence Measures — risk-based review, customer and beneficial-owner identification, source of funds and wealth, thresholds and reliance on third parties — Cambodia Financial Intelligence Unit; National Bank of Cambodia — 11.2020
• [4] Directive on Remittance and Wire Transfer — required originator and beneficiary information and risk-based execution, rejection or suspension of incomplete transfers — Cambodia Financial Intelligence Unit; National Bank of Cambodia — 10.01.2022
• [5] Fourth follow-up report and technical compliance re-rating of Cambodia — official assessment of the 2022 wire-transfer directive, KHR 4,000,000 threshold and five-year record keeping — Asia/Pacific Group on Money Laundering — 13.07.2022

Frequently asked questions

Why do the bank and the developer need to know where my money came from?

It is a standard part of customer due diligence that financial institutions carry out worldwide. The question is not a sign of suspicion: a bank has a duty to understand whose money passes through an account, and it applies that duty to everyone. The exact list of documents and the depth of the review differ by bank and by deal, so ask what is required in advance, before you transfer.

Can I pay from a relative's or a partner's account?

The transfer will technically go through, but it creates a gap: the buyer under the contract is one person and the money came from another. That difference then has to be explained and evidenced, and sometimes the payment is simply not credited against your contract. If there is no alternative, discuss it with the developer and the bank before transferring and get written confirmation of how the payment will be applied.

What exactly should I keep after each payment?

The developer's invoice showing the unit, your bank's proof of payment with full details and the amount, the developer's official receipt, and the correspondence if the payment terms were agreed separately. Keep originals and digital copies in one folder ordered by date. Retention periods differ by jurisdiction and by situation, so the practical assumption is that you will need these documents when you sell — that is, many years later.

What does a broken payment trail look like and why does it matter?

A break is a payment that cannot be tied to the contract and the unit: a transfer with no reference, money sent by a third party, cash with no receipt, an amount that matches no invoice. While construction is running this rarely gets in the way. It surfaces later, when you have to evidence ownership on resale or explain to a bank where the money came from as you move proceeds out — and reconstructing documents years later is far harder than collecting them at the time.

Sources

NovAsia transaction support practice in Phnom Penh · internal corpus on payments and buyer documentation · checked July 2026. Not confirmed and therefore not stated here: specific document lists or monetary thresholds at which a bank requests source-of-funds evidence; mandatory retention periods; currency control requirements and limits on cross-border transfers; bank processing times for such requests. All of these vary by bank, by jurisdiction and by transaction, and must be confirmed with your own bank, the developer and an independent lawyer before money moves. This content is for general information only and is not legal, tax or financial advice.