King Billy Casino spreads its welcome offer across three deposits, and the first one carries the biggest match. The King Billy bonus totals up to £750 plus 200 free spins, with 40x wagering on the bonus amount. I tested it with a £20 Visa debit deposit, and the first batch of spins landed in my account within a few minutes. The welcome package needs no King Billy casino bonus code, but the no deposit and reload offers do. King Billy holds a Curaçao licence and no UKGC licence, so GamStop does not cover an account there. Check your own limits before you claim anything.
- King Billy Welcome Bonus
- King Billy No Deposit Bonus
- King Billy Cashback Bonus
- Refer-a-Friend King Billy Bonus
- Seasonal and Special King Billy Promotions
- How to Use King Billy Bonus Codes
King Billy Welcome Bonus
The welcome package covers your first three deposits, and each one needs a minimum of £20.
Deposit |
Offer Details |
Wagering Requirements |
First Deposit |
100% up to £300 + 100 free spins |
40x bonus amount |
Second Deposit |
50% up to £200 + 50 free spins |
40x bonus amount |
Third Deposit |
100% up to £250 + 50 free spins |
40x bonus amount |
You get 14 days from each deposit to clear the wagering. A £100 first deposit gives you £100 in bonus funds and £4,000 of wagering on that bonus, so the offer suits you best if you play slots at £0.50 to £2 a spin. Table games contribute 10% toward wagering, which makes blackjack a slow route. The maximum bet with bonus funds is £5, and a larger stake gives King Billy grounds to void your winnings.
Tip: Deposit the full £300 on your first top-up to collect the full £300 match. A £150 deposit returns a £150 match, and the 100 free spins stay the same.
King Billy No Deposit Bonus
King Billy gives you free spins to test a slot before you risk your own money. You enter the King Billy bonus code in the signup form.
Bonus |
Code |
Game |
Max Cashout |
20 Free Spins |
KBSPINS20 |
Book of Dead |
£50 |
25 Free Spins |
KBROYAL25 |
Starburst |
£50 |
Each spin carries a value of £0.10, so 20 spins add up to £2. Win £10 from them and you owe £400 of wagering before a withdrawal. To cash out:
- Complete the 40x wagering requirement on your winnings
- Make a minimum deposit of £20
- Verify your account with photo ID and proof of address
Note: King Billy does not always show the no deposit offer to UK accounts. If the code field rejects KBSPINS20, ask live chat which free spins offer applies to you.
King Billy Cashback Bonus
King Billy pays cashback on Mondays to soften a losing week.
Cashback Percentage |
Eligibility |
Frequency |
Up to 15% |
Registered accounts with a deposit in the past 7 days |
Weekly |
King Billy calculates net losses as deposits minus withdrawals and bonus funds over the previous seven days. Lose £200 at the 15% tier and you receive £30. Cashback below £10 does not pay out, so a small losing week earns you nothing. The 5x wagering on cashback is far lighter than the 40x on deposit bonuses, which makes it the easiest King Billy casino bonus to turn into withdrawable cash.
Warning: Read the terms on each cashback promotion, because King Billy changes the percentage and the cap during special events.
Refer-a-Friend King Billy Bonus
King Billy does not publish a fixed refer-a-friend payout in the terms I read. Ask live chat for the current figure before you invite anyone.
Referral offers at comparable casinos include:
- Bonus credits for you and your friend
- Free spins packages
- Deposit match bonuses
Expect your friend to register and make a qualifying deposit before you receive a reward.
Seasonal and Special King Billy Promotions
King Billy runs time-limited promotions around holidays and major sporting events.
Promotion Type |
Current Offer |
End Date |
Friday Reload |
50% up to £150 with code KBFRIDAY50 |
Fridays, ongoing |
Slot Tournaments |
£50,000 prize pool across leaderboards |
Rotating schedule |
Most of these promotions need an opt-in click and restrict you to a list of eligible slots.
Fact: King Billy's tournament leaderboards rank you by highest single win or by win-to-bet ratio, depending on the event.
How to Use King Billy Bonus Codes
A King Billy casino bonus code unlocks the no deposit and reload offers. You enter it at registration or in the cashier.
When to Enter |
Where to Enter |
Code Examples |
Registration |
Signup form |
KBSPINS20, KBROYAL25 |
Deposit |
Cashier / Bonus tab |
KBFRIDAY50 |
To use a King Billy bonus code:
- Copy the code as written, because the field treats capitals and lowercase as different characters
- Open the registration form or the cashier
- Find the "Promo code" or "Bonus code" field
- Paste or type the code
- Complete registration or your deposit
Important: King Billy bonus codes for existing accounts may require a previous deposit or recent activity.
Each King Billy bonus has a maximum cashout. Free spin winnings cap at £50, and deposit bonuses cap at ten times the bonus amount. Break the £5 maximum bet rule and King Billy can confiscate your winnings.
Fund your account with a Visa or Mastercard debit card. UK law blocks credit cards for gambling, and King Billy also accepts Bitcoin. Read the full terms before you claim any King Billy Casino bonus code offer, set a deposit limit, and contact BeGambleAware if gambling stops being fun.