Onyx Slots handles UK deposits and withdrawals through five main payment methods, all free of casino-side fees. Visa and Mastercard debit cards cover most players, with PayPal and Open Banking rounding out the faster options. Boku lets you top up via your phone bill, though you cannot withdraw through it. The minimum deposit is £10; the minimum Onyx Slots withdrawal is £20. Submit a withdrawal request before 3pm on a working day and Onyx Slots places it in the processing queue that afternoon — your bank controls final delivery from there.
Onyx Slots supports five methods for UK players. Deposits post to your balance immediately on all of them. Withdrawals return to the method you deposited with — if you used Boku to top up, you will need a second method registered before you can withdraw.
| Payment Method | Type | Min Deposit | Min Withdrawal | Withdrawal Time | Fees |
|---|---|---|---|---|---|
| Visa Debit | Debit Card | £10 | £20 | 3–5 business days | None |
| Mastercard Debit | Debit Card | £10 | £20 | 3–5 business days | None |
| PayPal | E-wallet | £10 | £20 | Up to 24 hours | None |
| Open Banking / Faster Payments | Bank Transfer | £10 | £20 | Up to 2 hours | None |
| Boku | Pay by Phone | £10 | N/A | Deposit only | None |
Deposits at Onyx Slots take under a minute on any method except bank transfer. Open the Cashier from the top navigation, select Deposit, and follow these steps:
Boku deposits charge the amount to your mobile phone bill on your next billing date. Your network operator sets the monthly cap, which is usually between £30 and £240.
Onyx Slots processes withdrawal requests within 24 hours on working days. Before you submit your first Onyx Slots withdrawal, upload a photo ID and a proof-of-address document — without verified KYC, Onyx Slots holds the funds until review completes.
If your Onyx Slots withdrawal has not arrived after five business days, contact the support team via live chat with your transaction reference number. Onyx Slots can trace the payment from their end and confirm whether the delay sits with your bank.
Once Onyx Slots marks a withdrawal as processed, the time to your account depends entirely on the method. PayPal and Open Banking move faster because they bypass card networks. Debit card Onyx Slots withdrawal times stretch further because Visa and Mastercard run their own settlement cycles.
Onyx Slots withdrawal times on weekends extend by one day: a request submitted on Saturday morning typically enters the queue on Monday. The 24-hour processing clock on the casino side ticks through working hours only.
Four limits govern how much you can withdraw and when. The daily cap of £5,000 suits most players, but high-stakes sessions can bump into the weekly ceiling. If your balance exceeds £15,000, plan withdrawals across multiple weeks or contact VIP support to discuss an increase.
The UK Gambling Commission bans credit card deposits at all licensed operators. Onyx Slots accepts debit cards only — Visa and Mastercard credit cards will not load funds at checkout.
Claim OfferOpen Banking at Onyx Slots runs over the Faster Payments network, the same infrastructure behind most UK bank transfers. Deposits clear before the cashier page closes. Onyx Slots withdrawal requests processed before 5pm on a working day usually reach your bank account the same afternoon — that makes Open Banking the quickest route for getting funds out, ahead of PayPal and well ahead of debit card timelines.
Faster Payments carries a per-transaction ceiling of £250,000, so Onyx Slots's own daily limit of £5,000 is the binding constraint, not the network. There are no surcharges from Onyx Slots for using Open Banking.
Onyx Slots secures the cashier with several overlapping controls. The KYC check before the first withdrawal is the most visible one — it catches identity mismatches before funds move. The underlying infrastructure runs standard financial industry encryption.