How to Handle Exchange Source of Wealth Checks
Sooner or later, an active matched bettor gets the email: the exchange wants a Source of Wealth (SOW) check before you can keep depositing. It usually arrives at a deposit milestone, or when regular deposits and withdrawals start to look like serious volume.
Don’t panic, and don’t ignore it. These checks are a legal requirement on the exchange under anti-money-laundering (AML) regulations, they’re not an accusation, and they’re not optional. And unlike bookmakers, exchanges are hard to replace: there are only a handful of them, so an abandoned SOW check on a major exchange is a real hole in your setup. Take it seriously, do it once, do it properly.
What they might ask for
Bank statements, usually the core request, covering a specified period. If you fund the exchange from more than one account, expect them to ask for statements from each account you’ve deposited from.
Proof of bets, Smarkets in particular may ask you to evidence where the money comes from and goes to: bookmaker bet histories and withdrawal confirmations showing the circular flow of matched betting. This is where matched bettors actually have an easy story, the money trail is clean and documentable.
Other documents, payslips, proof of income, tax returns or similar, depending on what you tell them your funding source is. Only what supports your stated situation.
Common mistakes to avoid
The back-and-forth is what drags these checks out for weeks. Nearly all of it comes from submissions that create follow-up questions:
- Missing pages - send the complete statement, every page, even the ones that are just terms
- Cropped screenshots - if the bank’s name, your name, or the date range isn’t visible, it doesn’t count
- Unreadable documents - blurry photos of screens get rejected; export PDFs from your banking app
- Wrong date ranges - they asked for March-May; send March-May
Two principles: answer every question fully the first time (incomplete answers guarantee another round), and don’t volunteer extra information they didn’t ask for, unrequested documents just widen the review.
What happens after submission
Three outcomes:
- Approved - limits restored or raised, business as usual. The most common result for a clean, complete submission.
- Follow-up questions - usually triggered by a gap in what you sent; answer promptly and completely.
- More documents requested - same advice: complete, legible, on-topic.
A passed SOW check is also your best route to raising a low deposit limit, the two processes feed the same risk assessment, as covered in the low Smarkets deposit limit guide.
One more thing: keep your records tidy before the email arrives. A folder with your bank statements, a profit spreadsheet, and bookmaker withdrawal confirmations turns an SOW check from a stressful fortnight into an afternoon’s admin.
18+. Please gamble responsibly, BeGambleAware.