KYC (know your customer)
KYC, short for know your customer, is the set of checks a UK slot site runs to confirm who you are: your name, date of birth and address, and later, if needed, where your money comes from. Since May 2019 these basic checks have to be completed before you can deposit, gamble or even play a free demo.
By the Best Slots UK team. Last checked .
Key takeaways
- KYC confirms your identity, age and address, usually automatically at sign-up.
- UK sites must finish the basic checks before you deposit or play, demos included.
- Documents are only requested when the automatic check can’t confirm your details.
- Source of funds checks can come later, often around larger deposits or withdrawals.
- Stands for
- Know your customer
- Checks
- Name, date of birth, address
- When
- Before first deposit or play
- Rule in force
- Since May 2019
- Later checks
- Source of funds if needed
What KYC means on a slot site
Banks, mortgage lenders and casinos all use the phrase KYC for the same idea: a regulated business must know who it is dealing with. For a slot site, that has three purposes. It keeps under-18s out, it lets the operator match customers against self-exclusion lists such as GAMSTOP, and it supports anti-money laundering duties that apply to every licensed casino.
The UKGC tightened the timing in May 2019. Before then, some sites let customers deposit and play first and checked identity only when they tried to withdraw. Now the basic checks come first, which is why you may be asked for a document before you have placed a single spin.
The layers of KYC: what is checked and when
| Stage | What is checked | How it usually happens |
|---|---|---|
| Sign-up | Name, date of birth, address | Automatic check against credit reference and electoral data |
| If sign-up check fails | Same details, plus proof | Upload of photo ID and a proof of address |
| Payment method | That the card or account is yours | Name match, sometimes a photo of the card with middle digits hidden |
| Ongoing | Changes to your details or activity | Updated checks if something no longer matches |
| Higher spend | Source of funds or wealth | Payslips, bank statements or similar |
Most players only ever experience the first row. An automatic check runs within seconds of registration, and if it confirms your details there is nothing more to do. Our guide to age checks on slot sites explains how that first step works.
Documents a KYC check can ask for
- Photo ID: passport, driving licence or national identity card.
- Proof of address: a recent utility bill, council tax bill or bank statement in your name.
- Payment proof: a screenshot of an e-wallet account or a card photo with the middle numbers covered.
- Source of funds: payslips, bank statements or other evidence of where deposits come from.
Upload clear, uncropped images showing all four corners, and make sure the name and address match what you entered at sign-up. Our verification documents guide lists what each type of document must show.
How KYC fits into opening an account
- You enter your name, date of birth, address and contact details.
- The site runs an automatic identity and age check in the background.
- If it passes, you can deposit and play straight away.
- If it doesn’t, the account is held until you upload documents and they are approved.
- Further checks may follow later, for example before a large withdrawal or after a change in spending.
KYC and withdrawal delays
Because basic checks now come first, KYC holds at withdrawal are less common than they used to be, but they still happen. A site may need to confirm the payment method a withdrawal is going to, since most operate a closed-loop policy that returns money to the method you deposited with. It may also ask about source of funds if your activity has changed. Sending documents quickly is the simplest way to avoid a payout sitting in pending. Our guides to withdrawing slot winnings and faster withdrawals go into more detail.
A UK site cannot let you cancel a withdrawal to keep playing; reverse withdrawals have been banned since 31 October 2021. A delay caused by KYC is a check, not an invitation to play the money back.
Terms related to KYC
- Affordability check: financial checks that can sit alongside KYC.
- Demo mode: free play, which also needs age verification in Great Britain.
- Self-exclusion: relies on KYC details to match excluded players.
- UKGC: the regulator that sets the KYC timing rules.
18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set limits. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
What does KYC mean in online gambling?
KYC means know your customer: the checks a gambling site uses to confirm your identity, age and address, and, when needed, the source of the money you gamble with. In Great Britain, licensed sites must complete the basic identity and age checks before you can deposit or play, including free demo games. Most checks are automatic and take seconds; documents are only requested if the automatic check can’t confirm your details. Our verification documents guide explains what can be asked for.
Can I play slots without KYC verification?
No, a UK-licensed slot site must verify your age and identity before you can deposit or gamble, and the same applies to free-to-play demo versions of slots. This rule has been in force since May 2019. Sites that let you play with no checks at all are very unlikely to hold a Gambling Commission licence, which means none of the UK protections apply. Our answer to can you play online slots without ID explains the rules, and the free slots page covers demo play.
How long does KYC take at a UK slot site?
The automatic check at sign-up usually takes seconds and, if it confirms your details, you can play straight away. When documents are needed, review times vary by operator and by how busy the team is, from minutes to a day or more. Clear, uncropped images that match your registration details are approved fastest. Later checks, such as source of funds, can take longer because they involve more paperwork. Our faster withdrawal tips explain how to avoid KYC slowing down a payout.
Why is a casino asking for my bank statements?
A casino asks for bank statements when it needs to understand where your gambling money comes from, which is called a source of funds check. UK operators have anti-money laundering and safer gambling duties, so higher or changing spending can trigger a request. It isn’t an accusation: it is how the site shows it has checked that your gambling is affordable and legitimate. If you are unsure which pages are needed, ask support before sending. The affordability check entry explains how these checks relate.
Is it safe to upload ID to a slot site?
Uploading ID to a UKGC-licensed site is generally safe, because the operator must protect personal data under UK data protection law and use secure upload systems. Only upload documents through the site’s own verification page or app, never by replying to an unexpected email or message, as that is a common phishing tactic. Cover the middle digits of any card you photograph. Before you send anything, confirm the site is licensed using our guide to checking a slot site’s licence.
Why did my KYC check fail?
Most failed checks come from a mismatch between what you entered and what official records show, such as a nickname instead of your legal name, a recent move or an address written in a different format. A failed automatic check isn’t a rejection: the site simply asks for documents instead. Check your details, correct any typos with support, and upload photo ID and proof of address that match. If documents are refused, ask what was wrong. Our guide to age checks on slot sites explains the process.