The core of proof of funds for a UK property purchase using Binance sale proceeds is not just "exporting a transaction record from Binance." UK solicitors' anti-money laundering checks require you to prove two things: the GBP that entered your UK bank account came from the legal sale of your cryptocurrency; and the fiat currency you originally used to buy that cryptocurrency itself came from a legitimate source. Only providing the record of funds received after selling crypto leaves the chain broken. Solicitors will usually also ask how the coins were acquired, how the money moved from the exchange to the bank, and whether tax matters have been handled.
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First understand what solicitors are looking for
In UK property transactions, solicitors are bound by anti-money laundering regulations and must verify "Source of Funds" and sometimes "Source of Wealth." Source of Funds refers to where the specific money used for this transaction came from. Source of Wealth refers to how your overall assets were accumulated. Crypto sale proceeds fall under the former, but if the amount is large or the situation is complex, solicitors may also ask you to explain the latter.
Cryptocurrency is classified as a high-risk category in UK anti-money laundering risk assessments. The 2025 National Risk Assessment has upgraded crypto assets from "medium risk" to "high risk." In practice, different law firms vary significantly in how willing they are to accept crypto-related funds. Some firms have explicitly stated they do not accept funds coming directly from crypto accounts, and will conduct enhanced due diligence on a case-by-case basis when crypto assets are involved. This means whether the solicitor you choose has handled crypto cases before will directly affect how smoothly the process goes. Asking at the quote stage whether the firm accepts crypto sale proceeds as a source of house funds will save you time compared with discovering they do not accept it just before exchanging contracts.
What you need to prepare on the Binance side
Binance's official transaction history export function is the basic material. On the web version, go from "Assets" to "Asset History," hover over the export icon, and select "Export Transaction Records." You can generate records by date range. Custom date ranges support records longer than 6 months, but the number of times you can generate them per month is limited (15 to 40), and download links are only kept for 7 days. It is recommended to generate records covering the full buy-sell cycle in one go before you need to submit them, and download and save them as early as possible.
This record can prove that you had trading activity on Binance, but it is not enough on its own to constitute a complete proof of funds. Binance's own source of funds verification guide also explains that the platform's accepted document standards include: issued in your own name, clear and legible, unedited, and recently issued. Applying the same standards to the materials you submit to your solicitor is a reasonable starting point.
Materials you need to prepare from the Binance side include:
A complete export of your transaction history, covering the entire time span from when you bought cryptocurrency to when you sold it and withdrew funds. If there were years of holding or multiple buys and sells in between, do not export only the final sale.
Fiat withdrawal records, showing details of GBP (or other fiat currency) withdrawn from Binance to your own bank account. Binance records show "withdrawal," but you also need bank statements to match the "incoming funds." The time, amount, and currency of the two must correspond.
Records of your initial deposit. This is the most easily overlooked part. Where did the money you originally used to buy coins come from? Salary, savings, proceeds from a property sale, or something else? If the initial deposit itself has no clear records, the starting point of the whole chain is unclear. When Binance requires users to verify the source of funds, it asks for bank statements and similar materials for fiat deposits. UK solicitors follow a similar logic.
What UK solicitors may additionally require
According to practical guidance published by UK law firms, for property transactions involving crypto sale proceeds, solicitors may require: evidence of the source of the fiat currency originally used to purchase cryptocurrency; wallet history showing the transaction timeline; deposit and withdrawal records from crypto exchanges; proof of cryptocurrency being converted into fiat and transferred into a bank account; and tax compliance documents related to crypto gains with HMRC.
Tax documents need to be handled separately. The UK has capital gains tax rules for the disposal of crypto assets. Solicitors may ask you to confirm that the relevant gains have been declared or to explain your filing arrangements. This is not something Binance can issue. You need to prepare it yourself or consult a tax adviser. Do not wait until the solicitor asks about it to discover that tax has not been handled. That will directly hold up the transaction.
There is also uncertainty at the banking stage. Not all UK banks are happy to receive large deposits from crypto exchanges. Practical guidance notes that larger transfers may trigger bank inquiries about the source of funds, and mortgage lenders may prefer funds to have been "resting" in a bank account for a period of time before being used as a deposit. If you plan to sell coins and immediately transfer the funds to your solicitor without any holding period in the bank, some lenders or solicitors may not accept it. Confirming the requirement for how long funds need to remain in a bank account with your mortgage adviser and solicitor in advance is more effective than explaining afterwards.
A practical preparation sequence
Before making an offer: Ask at least two or three law firms whether they handle property transactions involving crypto source of funds, and confirm what forms of proof they accept. Also ask the lender (if a mortgage is involved) about their conditions for accepting crypto sale proceeds as a deposit and whether a seasoning period is required.
Before selling coins: Make sure your Binance account KYC is completed and the information matches your current identification documents. Export transaction records covering the full holding period, and also save the bank statements from your initial deposit. If the initial deposit came from multiple sources, organise each one separately.
After selling coins and withdrawing funds: Save the Binance withdrawal records and the corresponding incoming transfer records in your bank statements. Putting the two together directly shows the "exchange withdrawal to bank deposit" correspondence.
When submitting to your solicitor: Organise by timeline rather than stacking documents by type. A short timeline explanation (when you bought, the holding period, when you sold, and which bank you withdrew to) paired with supporting documents arranged in the same order is more likely to pass review than a messy pile of screenshots. Practical guidance from law firms explicitly notes that screenshots or account records showing only internal transfers without original source evidence may not be accepted.
When this path may not work
If your cryptocurrency was originally obtained through over-the-counter trading, transfers from someone else's wallet, mining, or other means that cannot be traced to a clear fiat source, the difficulty of UK solicitors' review will rise significantly. Some law firms have stated that if the source of funds and source of wealth cannot be established, the transaction should be terminated. This does not mean such funds are necessarily problematic. It means the cost of proving them is very high, and some firms will choose not to take the case. Before spending money on solicitor fees, honestly assess whether you can produce complete records of your initial deposit. If you cannot, changing your approach early (such as using funds from another source to buy the property) is more practical than pushing forward stubbornly.
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References
- Binance·How to Generate Transaction History?，2026-10-29
- Binance·Source of Assets and Source of Funds Verification Guide，2026-10-29
- Lexology·Buying Property with the Proceeds of Cryptocurrency: Practical Insights and Legal Considerations，2026-10-29
- Lester Aldridge·Source of Funds vs Source of Wealth，2026-10-29
- Bolt Burdon·Why Solicitors Ask About Your Finances When Buying or Selling Property，2026-10-29
- Lawrence Stephens·Buying UK Property Using Fiat Currency from the Sale of Crypto Assets，2026-10-29
- CLC·AML Report 2025（Crypto asset risk level and property transactions），2026-10-29
