Home › Bonus code

WIN300: the one CasinoWinner welcome code, and how to use it well

A 300% match quadruples your first deposit. Here is where the code goes, what it turns a deposit into, and how to get the most from it.

Updated 31 October 2026 · by the site team

Codes travel. They get copied onto forums, pasted into look-alike pages and altered along the way, so players turn up with numbers we have never offered. To be clear from the source: CasinoWinner has one welcome code, WIN300, and it gives a 300% match on the first deposit. If you see a different CasinoWinner code, a "no deposit" amount that needs topping up to release, or a site that asks for a payment to activate a bonus, you are not looking at us.

Claim the match at casinowinner.live — code WIN300

Where exactly do I type WIN300?

There are two places, and either works:

1. On the registration form. The promo box is the last field, after the password. Type WIN300 in capitals, with no spaces.
2. In the cashier, on your first deposit. If you skipped it at sign-up, enter it as you make the first payment. This is the moment the match is calculated.

Choose your amount first and the code second. The bonus preview in the cashier makes every sum look bigger, which is exactly why the deposit should be decided before you see it.

What does a 300% match turn my deposit into?

For every euro you pay in, three more are added as bonus credit. The cashier minimum is €25, and Revolut and card payments start at €30, so the most common first deposits look like this:

The last column shows how much of the balance is the gift: three quarters of what you play with comes from the match. It turns into cash once the play-through set on CasinoWinner's promotions page is complete.

Why does a bigger match mean more to play through?

Play-through, or wagering, is a multiple of the bonus. Whatever that multiple is on the day you deposit, it is applied to a match three times your deposit, which is why a 300% offer is made for a long, enjoyable slot session. Read the multiple, the games that count and the stake size that applies while the bonus runs on the promotions page at casinowinner.live before you pay. Slots usually count in full and clear it fastest; the dealer tables are best enjoyed from your cash balance.

Who is WIN300 a good fit for?

It suits a player who was planning a long slot session anyway. With €120 on the balance rather than €30, the same evening goes further. A steady, lower-volatility slot spreads the bonus across more spins; a high-volatility one can finish it in a handful. With roughly 590 of the 3,931 games available in demo mode, you can try a slot's rhythm for free before committing bonus money to it.

It suits less well someone who wants to withdraw after a short session, or who plays mainly live blackjack. In that case, leave the box empty. Declining is not a mistake to correct: it is the cleanest balance there is.

Can I remove the bonus after accepting it?

Yes. If you change your mind, you can ask CasinoWinner support to remove the bonus instead of finishing the play-through. Ask early, before you have spent much of the session on it, and check the promotions page for how removal is handled.

Checklist before you claim

• You are on casinowinner.live, spelled with no hyphen. The copy at casino-winner.live is not us — see why that address is not CasinoWinner.
• Your deposit amount is fixed before you open the cashier.
• You have read the play-through multiple and the games that count.
• Your name on the account matches your photo ID, so a win can be paid out without a delay. The form is covered on CasinoWinner sign-up.
• You have set a deposit limit in the cashier.

Is WIN300 the same on the app?

Yes. CasinoWinner has an app for iOS and Android that installs straight from the site, and it uses the same account, cashier and code. Some players find it easier to read the terms on a laptop and play on the phone afterwards. Installation is explained on the app page.

Bonuses are for entertainment, not income. 18+ only; set your limits before the first deposit.

Deposit with WIN300 at CasinoWinner