Best online casino bonus codes 2025

Chris Jonat
Chris Jonat
Content Manager

Online casinos use bonus codes to give perks, such as extra coins or free spins, to informed customers. This guide contains the best online casino bonus codes for 2025, and what you need to know to get the most out of using them.

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Best casinos with valid bonus codes this August

#1 Top rated casino

Crown Coins Casino
us
Accepts Ohio players
Get 200% More Coins on First Purchase – 1.5 Million CC + 75 SCBonus
Read Crown Coins Review
2435 claimed this offer in the last month
Crown Coins screenshot
Deposit options include
visa
mastercard
discover
applepay
onlinebanking
amex
skrill
paypal
  • No purchase required to get started
  • Easy sign-up process in Ohio
  • Turns coins into real prizes

2

RealPrize Casino
us
Accepts Ohio players
EXCLUSIVE: Up to 220%, 2,000,000 GoldCoins + 80 SC Free + 1000 VIP pointsBonus
Read RealPrize Review
1656 claimed this offer in the last month
RealPrize screenshot
Deposit options include
visa
mastercard
skrill
paysafecard
echeck
wiretransfer
paypal
applepay
  • Best social casino for Ohio users
  • Exclusive welcome bonus for Ohioans
  • Safe and secure sign-up process

3

Stake Casino
us
Accepts Ohio players
Up to 560,000 GC, $56 Stake Cash + 5% RakebackBonus
Read Stake Review
1463 claimed this offer in the last month
Stake screenshot
Deposit options include
bitcoin
ethereum
litecoin
paypal
  • Exclusive promo code: CORGBONUS
  • 3,000+ games inc. Stake originals
  • Weekly slots battles for 50M GC

How to use a casino bonus code

An online casino bonus code applies a specific offer to your account when used at the right stage. Follow the steps below to make sure you can claim your bonus:

  • Step 1: Pick an online casino

    Choose a casino from our top list. These online casinos have great bonus offers and we have exclusive bonus codes for many of them.

  • Step 2: Find a bonus code & read the bonus terms

    Once you have found a bonus, make sure to check the wagering requirements, bet limits, timeframes, and game restrictions. Based on this you can determine it's a good offer for you.

  • Step 3: Create an account or log in

    Create an account when the bonus is for new players. For returning users, opt in to claim offers linked to deposits or ongoing promotions.

  • Step 4: Get the correct code

    Bonus codes are exact matches, so one wrong character, and the offer won’t apply. So make sure you copy and paste the exact code.

  • Step 5: Enter the code at the right point

    Each casino sets its own point for entering the code, so it might appear during registration, before the deposit, or in your account settings.

  • Step 6: Make the required deposit

    The next step is to fund your account. Check how much money you need to add to qualify for the code and deposit the required minimum amount.

  • Step 7: Check your account for the bonus

    After the deposit, open your balance or promotions tab and confirm the bonus was applied. Start playing only once it appears.

  • Step 8: Use the bonus on eligible games

    Some casinos only allow bonus funds to be used on certain games. Stick to what’s included, or progress won’t count.

  • Step 9: Keep track of your progress

    Wagering status is often displayed on your account page. Watch it to avoid falling short before the deadline.

  • Step 10: Withdraw after clearing your bonus

    Once you’ve met the full requirements, you can withdraw your winnings. Partial progress doesn’t count and unmet conditions can lead to automatic removal of bonus winnings.

Types of casino bonuses

Online casinos offer a wide range of bonus codes for different kinds of bonuses. Some are for new players, some are also valid for returning players. The exact details vary by site, but most operators stick to a handful of formats.

Let’s see the most common types of online casino bonuses. Below, I have broken down the most important details per bonus type you need to know:

  • welcome bonus.svg

    Welcome bonus

    A welcome bonus gives new players a reason to sign up at a specific online casino. Welcome offers come in all shapes and sizes. It can be a deposit match bonus, free spins, or a cashback, or a combination of some of those.

    An example of a welcome bonus is a 100% deposit match up to $500 + 500 free spins. A deposit of $200 then results in $200 in bonus funds, bringing the total balance to $400 to play with. In addition to that, you will get the free spins. These kind of offer provide a great way to try out a new online casino.

  • reload bonus.svg

    Reload bonus

    Reload bonuses are for returning players and apply to deposits you make. The amount is calculated as a percentage of the deposit, typically ranging from 25% to 50%, with a fixed upper limit. 

    A deposit of $100 might return an extra $25 or $50 in bonus funds, depending on the offer. These bonuses are not always active and tend to appear on select days or during short-term campaigns. So it's worth keeping an eye on the casino's promotions page.

  • cashback-bonus

    Cashback bonus

    Cashback bonuses are calculated after you’ve played and lost, not before. The casino refunds a portion of those losses based on a fixed rate and time period.

    The casino calculates how much a player has lost, usually over a week, and then refunds a percentage as bonus funds or real money. A typical rate is 10%. If a player deposits and loses $500, they receive $50 back.

  • colour-money

    Loyalty program

    A loyalty program offers rewards for loyal players. You will accumulate points and these can be exchanged for bonus funds, free spins, or other preset items. In some cases, the program includes tiers. As you move into higher tiers, the rewards improve in value and frequency.

    You’re typically enrolled in the program automatically, with points added as you play. Wagers placed count toward point totals. Point accumulation follows a fixed rate, usually based on wager size. A common structure gives one point for every $10 bet.

Bonus terms you should know

Bonus terms can make or break how valuable a bonus offer is. They limit where the funds apply, how they can be used, and under what conditions they’re cleared.

Below you'll find an overview of the most important terms and conditions when claiming any casino bonus:

Bonus requirement
Why it matters
🔄 Wagering requirements
This is the total amount you must bet before you can withdraw anything tied to a bonus. It's calculated as a multiple of the bonus, or sometimes of the deposit plus bonus. You'll often find wagering requirements between 1x and 25x. The lower the requirements, the easier they are to clear.
🏅 Max bonus amount
Online casinos cap bonus value up to a maximum amount. This is always clearly stated up front, so you know how much you can claim. Winnings from bonus play may also be capped, regardless of how much you earn. This information is usable stated a bit further into the Terms and Conditions.
⏰ Time frame
Every bonus runs on a timer, and once it starts, the countdown doesn’t pause. Some casinos give you a full month to meet the requirements; others give you just a few days before everything is wiped. Free spins often expire even faster, sometimes even after only 24 hours.
⬆️ Maximum & minimum bet
Betting limits apply during bonus play and are important to know for clearing your bonus. There is usually a minimum and maximum amount you need to bet for your wager to count towards clearing your bonus
🎰 Excluded games
Bonus funds don’t apply to every game. Slots usually qualify, but table games, live dealers, and crash style games are often not eligible. Some slots are excluded as well, so make sure to check what games are eligible.
💳 Excluded payment methods
Certain payment methods block access to bonuses. Skrill, Neteller, and prepaid cards are the most common exclusions. Depositing with one of them prevents the bonus from triggering, and switching methods afterward won’t recover it.
📍 Restricted countries
Your location determines bonus availability, as many casinos restrict offers by country. Blocks may come from the casino, platform, or local gambling rules. Always check the list of eligible countries in the terms before claiming an offer.

What to look for in a casino bonus

The best online casino bonus depends on how you play and what you want from it. If you prefer slots, choose a bonus that includes high wagering contribution from those games and doesn’t restrict key titles. A smaller bonus with lower rollover often gives more value than a large one that’s hard to clear. Time pressure, capped bets, or fixed payout limits can reduce what you actually get from a bonus. Before claiming anything, make sure the offer is open to your country and accepts the way you plan to deposit.

Find the best online casino bonus code for you

Eager to find the right online casino and promo code for you? Answer a few questions using the tool below to get personalized recommendations.

Crown Coins CasinoRealPrize CasinoStake CasinoJackpota CasinoCasino.ClickNolimitCoins CasinoFunrize CasinoFunzCity CasinoLegendz CasinoMcLuck Casino

Still unsure where to play? Try these slots for free!

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Play'n GO
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TaDa Gaming
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Backseat Gaming

Tips for claiming the best online casino bonuses

A higher bonus isn't always better. A higher amount often means higher wagering requirements, which means you need to bet more to clear your bonus amount. Others are smaller but more flexible and easier to clear, giving better overall value. There are more things to watch for before or when you claim a bonus.The tips below focus on how to spot the best bonus codes and offers:
  1. 1
    Check for exclusive casino bonus codes: Affiliate codes such as those you find on Casino.org can unlock bigger bonuses or lighter terms than the main site.
  2. 2
    Compare offers, not just amounts: A $500 bonus at 40× rollover will require far more play than a smaller one with easier terms. The full set of terms and conditions determines how good a bonus is.
  3. 3
    Always read the fine print: The terms & conditions cover bet limits, eligible games, time limits, and payout steps. Miss one and your bonus and potential winnings can be gone.
  4. 4
    Do the math: Bonus size only matters when the terms make it usable. A $1,000 offer tied to 50x wagering turns into a $50k playthrough. Smaller bonuses with lighter rollover often pay better.
  5. 5
    Never use fake information: Most bonuses stay locked until your account is verified, and that process doesn’t work if the details are fake. Casinos cross-check your name, birth date, and payment source against your documents before approving any payout.
  6. 6
    Check for mobile only bonus codes: Some app-exclusive deals never show on desktop. Always check inside the app before you deposit, or you might miss a reward that doesn’t show up anywhere else.
  7. 7
    Visit the promo page regularly: Ongoing offers are posted quietly and may last just a day. Don’t rely only on emails. Checking in regularly ensures you don’t miss short-term bonuses that can add extra value to your normal play.

Contact professionals for support and advice

Gamblers Anonymous
Gamblers Anonymous
GA provides safe, confidential groups for anyone struggling with gambling addiction. Members share experiences, offering support and encouragement to one another as part of a 12-step program to overcome their addiction, improving their quality of life.
National Council on Problem Gambling
National Council on Problem Gambling
The NCPG provides a helpline, a textline, and live chat support for individuals and families impacted by problem gambling. They also offer educational materials and resources to promote responsible gambling.
Gam Talk
Gam Talk
GamTalk is a 24/7 helpline and online forum for problem gambling. Joining is free and users are completely anonymous.

FAQs

Chris Jonat circle (1).svg
Content Manager

Chris has been working in iGaming for 15 years, and is now bringing his experience and expertise to Casino.org's exhaustive coverage of online casinos within the US.

A writer and editor with a penchant for games and strategy, Adam Ryan has been with the Casino.org team for more than eight years. Having written for and edited numerous iGaming brands in his career, he’s something of a content sage when it comes to our iGaming copy in the US.