Multiple accounts
Multiple accounts means one person holding more than one player account with the same gambling operator, whether opened under their own name, a relative’s details or a variation of their address. Almost every operator’s terms limit each person, and usually each household, device or payment method, to a single account. The rule exists mainly to stop the same welcome bonus being claimed twice, and to keep KYC and anti-money-laundering checks tied to one identifiable customer.

Where the multiple accounts rule bites
Most players meet the rule twice: once in the sign-up terms, where it sits in a clause on eligibility, and again at the first withdrawal, when identity documents are compared against every account on record. A matching surname, card number or IP address can be enough to flag two accounts as linked, even where two genuine people share a flat.
The consequences are set by each operator rather than by a common standard.
Typical terms allow the operator to close the duplicate accounts, void any bonus and the winnings that came from it, and in some cases withhold the balance while the review runs, which is why you should read the clause on household and shared-device accounts before a second person in the same home signs up.
What multiple accounts is confused with
The term is often mixed up with holding accounts at several different operators, which is a separate matter and is not restricted by the single-account rule at all. One account per brand is the usual limit, though sister sites run by the same company sometimes share a database and treat an account on one as an account on all.
It is also distinct from bonus abuse, although the two overlap heavily. Opening a second account is the most common way of claiming a one-time offer again, so operators tend to list both breaches in the same clause and apply the same penalties to them.
A reopened account after self-exclusion is a different case again, handled under responsible gambling rules.
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