Top Online Casino Promo Codes for Exclusive Bonuses

Online casinos offer plenty of bonuses to new and existing players, and bonus codes are among the most common ways they provide exclusive deals.

At CasinoSmash, we've done the rounds, compiling the best promo codes for online casinos, so you can get more bang for your buck when playing at a gambling site.

On this page, you'll discover the best online casino bonus codes, the factors that make a good online casino bonus code, the different kind of casino bonus promo codes available, and the best online casinos to choose for each type of bonus code promotion.

Full List of Promo Codes For Online Casinos

Room BonusRatingGet the Offer
Get 100% up to $250
Exclusive New Customer Offer
8/10 Play
21+. New players only. All bonus money has 1X play through requirement and needs to be played through within 30 days, otherwise it will expire. General T&C apply.
Get 100% up to $300
8/10 Play
Must be 21 or older to gamble. Valid within the State of New Jersey only.
Get $100
8/10 Play
*Rules apply. Must be 21+ located in NJ. Minimum Deposit: $10. Minimum Wager: USD 0.01 (one cent). Any withdrawals during the 7 days, or before depositing, would automatically exclude the player from taking part in this promotion.
Get 100% up to $500
Valid on ALL the games on the site!
9/10 Play
Your largest deposit/transfer (minimum $10) in the seven days prior to claiming the offer will qualify for a 100% matched bonus, up to a maximum of $500.
Get $10
FREE No Deposit Bonus
8/10 Play
This promotion is available to individuals aged 21 years and over who have registered as customers on and are physically located within the state of New Jersey. Enter the bonus code UBCASINO10 when you register. Deposit and enter code UBCASINO500. In the occasion that the event on which the bet is placed is canceled, any bonus and associated winnings will be forfeited. Unibet reserves the right to change or cancel this promotion or part of this promotion at any time without notice. General T&C apply.
100% up to $600 + $25
A Value-Packed Offer for New Players
9/10 Play
21+. New players only. New Jersey only. This offer is valid until December 31, 2020. Minimum deposit $ 20. Maximum deposit is $600. T&C apply.
Get 100% up to $1,000
+ 25 Free Spins on Starburst
8/10 Play
Welcome offer for new NJ PartyCasino accounts; includes a 100% deposit match, up to $1,000, and 25 Free Spins. Valid through Dec. 31, 2021. Full T&Cs apply.
Get 100% up to $1,500
Casino Games, DFS, Sports Betting, and More!
8/10 Play
A patron’s first deposit on DraftKings Casino only (min. $5) made between 7/23/21 – 9/8/21 qualifies the patron to receive up to $1,500 in bonus funds that can only be used on DraftKings Casino. Bonus amount is equal to that of the first deposit amount.
Not available in your country
Not available in your country

What Are Some Of The Main Factors Of A Good Promo Code?

When picking an online casino promotion code, there are a couple of factors to take into account to make sure you get a fair deal from a reputable site:

  • Assess the deal, what it offers, and the terms and conditions: As well as just looking at the amount of money or free spins offered, be sure to read the terms and conditions of all bonuses, paying particular attention to the wagering requirements (how many times you must wager the amount of a cash bonus to withdraw any winnings you made with it), time limits, and any other details set by the operator.

    Only take the deal if you can meet all of the conditions specified.

  • Only take bonuses from licensed online sites: You should only deposit, take a bonus and play at the best online casinos that are licensed in your country.

    These sites are bound by law to payout, protect players financially and offer fair and tested games. Avoid depositing your money at unlicensed or offshore sites as the same consumer protections do not bind them.

    Ensure you select a legitimate gambling site by picking one of the online bonus codes casinos we list or by checking at the bottom of the site's homepage for a licensing logo (e.g. official state seals in USA casinos or UK casinos)

  • Check which payment methods are included/excluded: Some gambling sites only allow specific payment methods. If you need to deposit to claim an online casino bonus code, be sure to check the terms and conditions of the deal for excluded payment methods, as the last thing you want to do is add your cash and find out your deposit didn't qualify for the bonus.

What Are Promo Code Bonuses?

Online casino bonus codes are a series of letters and numbers that activate a bonus when input into your casino account. They tell the site that you qualify for the bonus and which offer you are claiming.

You can use bonus codes to claim all manner of deals, including new player cash matches, no deposit bonus codes, and even existing player bonuses like reloads and free-spin offers.

What's more, casino bonus codes can go by different names like a referral code, online casino voucher code, or promo code, but at the end of the day, they all mean and do the same thing - and grant you a bonus.

Casino Promo Codes for New Players vs. Existing Players

Casino bonus codes can be split into two types: those offered to new players, which allow you to access a cash match or no deposit welcome deal (essentially free money promo codes), and those offered to existing players, which are more likely to grant free spins, a reload deal, or cashback bonus.

The main differences are that new player promo codes tend to be more generous and offer casino credits to secure your signup to the site.

Existing player deals aim to hold your interest, encourage you to deposit, and promote some aspects of the site such as a particular game or feature. Plus, as you are already a member, they tend to offer slightly less than new player bonuses.

Promo Codes For Mobile Casino Games

Mobile gaming is ever-popular, with more players now opting to play on the go from cell phone and tablet devices. Most online casino bonus codes are the same both at desktop and mobile sites.

There are a few exceptions, however, and you may come across mobile-only apps, like FanDuel in Pennsylvania. In this case, it's entirely possible that the operator would offer a mobile-only online casino bonus code.

Regardless, you can access all of the deals listed on this page from any mobile device - just sign up, pop in the code, make your deposit and start playing.


Do casino promo codes differ for different online casino games?

It depends on the promo code and what the casino has programmed it to do. You can find out which games the code works for in the terms and conditions for new player deals, just look for game contribution percentage or allowed/included games.

For existing player promo codes, it's more likely that the deal will be game-specific. For example, a free spins promo code looks like 25SPINS and is linked directly to a particular game. As with all bonuses, everything you need to know about how you can use a bonus code is detailed in the terms and conditions.

Why use casino bonus codes to claim bonus offers?

Bonus codes are often used to give a little more than the available bonuses you'll find at a casino's promo page. Perhaps it's an exclusive deal that awards a larger cash match, or one with space for only a limited number of lucky players. Either way, a promo code is like having a secret password to get extra deals on top of the regular promos.

How to claim a promo code?

If you are a new player, then you first need to pick and join a casino. When completing the registration or making your first deposit, you'll be asked if you have a bonus code — just pop in the code, and away you go.

If you're an existing player, you'll have the option to enter a bonus code when depositing, if there are any active options at the site. If you run into any issues, reach out to the site's support team.