Since February 2025, a UK online casino customer who deposits more than £150 net in a rolling 30-day period triggers a financial vulnerability check. Before that, from the end of August 2024, the threshold was £500. Both figures come from the Gambling Commission’s own explanation of the checks. They also explain much of the current market. When regulatory scrutiny is tied to how much money goes in, the size of the first deposit becomes a commercial decision as well as a technical one.
The first deposit is a cost, not a sale
A new customer is expensive to acquire. Advertising, affiliate commissions and welcome offers are paid before the player has done anything, and most of that spend never comes back. The operator’s main problem is getting a sign-up to make any deposit at all, more than getting them to make a large one. Every pound of friction at that step costs conversions.
A low minimum lowers the stakes of trying the site. It also sorts customers. Someone who deposits a small amount and stays is worth more over time than someone who deposits a lot once and leaves. Operators competing for attention on comparison pages had an obvious reason to push the entry price down.
Why payments made it possible
Small deposits only make sense if the payment rails can carry them cheaply and instantly. Debit cards, e-wallets and bank transfers now settle in seconds and are routine for low-value transactions. Credit cards are no longer an option: their use for gambling in Great Britain has been banned since April 2020. That ban moved deposits onto methods tied to money the customer actually has.
Fixed per-transaction fees still exist, and they weigh more heavily on a small deposit than a large one. This is a reason some sites set a floor at all. How each operator balances that cost against conversion isn’t public, and it varies by payment provider and contract.
What the checks look at, and what they don’t
The term “affordability check” is widely used, but the Commission says it is inaccurate. The checks at £150 and £500 are financial vulnerability checks. They use publicly available data, such as county court judgments or bankruptcy records, and they do not use credit reference bureau data. Their purpose is to spot significant financial difficulty early in the customer relationship.
A separate scheme, financial risk assessments for high-spending customers using credit reference data, was still being piloted when the Commission answered the freedom of information request behind its published explanation. The regulator said it was not considering mandatory open banking, and would not block customers who declined to share banking data. Identity verification and anti-money-laundering checks still apply to everyone, and a customer who refuses those may not be allowed to keep gambling.
The checks look at net deposits over 30 days. The minimum deposit has no effect on them. A site with a £1 minimum and one with a £20 minimum face the same thresholds once a customer’s cumulative deposits pass them.
The “no minimum” label
Some sites are marketed under the heading of no minimum deposit casino, meaning they accept very small sums rather than literally any amount. This is a marketing category rather than a regulatory one. The Gambling Commission does not license “minimum deposit casinos” as a separate type of operator. The same licence conditions apply whatever the entry price.
The low entry point also does not protect the player. The Commission has told operators that deposit and loss thresholds have often been set too high compared with what most people have for leisure spending. A small first deposit is no guarantee that later deposits stay small. What a player spends over a month counts for far more than what they spent on the first day, and that is the measure the regulator has chosen to watch.
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Richard Vane is Senior Reporter at MorningTimes.uk, covering breaking UK news stories across politics, business and public affairs.