Best Online Casino Bonuses in the US 2025

Nothing beats the rush of a winning streak⁠ – except when it's on someone else's dime. Casino bonuses give you extra funds to try your luck and extend your play time. On this page, you'll find a guide to casino signup bonus offers at the best online casinos and where you can use them. Then follow the rest of this page to learn all about online casino bonuses, how to redeem them, and tips for maximizing real money profits. 

There are as many types of bonuses out there as there are casino operators. What's more, these promotional offers change all the time. Depending on your gambling style and budget, one might be a better fit than another. 

Of course, you can't claim these bonuses if don't know where they're available. That's why we'd like to break down the best online casinos that offer a variety of bonuses. 

Online casinos are only legal in six US states: New Jersey, Pennsylvania, Delaware, West Virginia, Michigan, and Connecticut. While you don’t have to be a resident there, you must be located in the state when playing. Geolocation software will determine if you are, whichever device you're on. Any play outside these states is illegal, other than sweepstakes-style casinos. 

Once you’re in a legal US state, you can take advantage of bonus offers. To get the best online casino deals and the most out of your experience, we recommend that you browse through the sites that are available in regulated states so that you can get an overview of the offers available.

Here is a more detailed rundown of where you can play legally and find casino welcome bonuses in the US.

New Jersey

When it comes to a spread of legal gambling options, New Jersey is perhaps king of them all. It was the first state to legalize online casinos (in 2013), it pioneered the repeal of the Professional and Amateur Sports Protection Act (PASPA), and has more active online casino operators than any other state. There are around 30 NJ casinos online, plus poker operators, offering a mind-boggling amount of choices for every player.

Pennsylvania

Pennsylvania is frequently hot on New Jersey’s tail, as it was also an early adopter and produces staggering revenue numbers. The active list of PA online casinos is also quite long. Plus, companies are still acquiring licenses in PA, so there are new launches sporadically.

Michigan

In addition to being very gambling-friendly, Michigan has the benefit of location. Whereas other legal US online casino states are more clustered together, bordering each other and fighting for players crossing state lines, Michigan isn’t a quick drive to a competitor state. It gets the benefit of visitors traveling there solely to gamble. The list of Michigan online casinos is at around 20 operators, so it’s on par with Pennsylvania.

West Virginia

West Virginia may not be as metropolitan as the other three mentioned above, but it’s an online casino powerhouse that secured quite a few A-list brands – all partnered with retail casinos – plus legal online poker. The West Virginia online casinos list features more than a dozen operators.

Connecticut

Think of Connecticut online casino offerings as boutique. The state lacks a few of the major players – BetMGM and Caesars are not active – but the two live CT online casinos are decent. Two area tribes each partnered with a gambling powerhouse, which was a smart move. Mohegan Sun Online Casino is powered by FanDuel Casino and DraftKings Casino in Connecticut is via a partnership with Foxwoods Resort Casino, which is owned by the Mashantucket Pequot Tribal Nation.

Delaware

Delaware is a small state with a big amount of legal gambling options. But when it comes to online casinos in Delaware, it is the only state where the online casinos are overseen by the state Lottery (in partnership with 888), so options are more limited. This unique set up means that only 888 affiliated partners are allowed, each paired with one of the three racinos in the state. However, the state does also boast legal online poker.

👉 Not in a state where real money casinos are legal? Take advantage of free sc coins at sweepstakes casinos!

Online casino bonuses are an incentive for players to sign up and keep betting. When bonus offers can boost your bankroll without driving to a land-based casino, it's more of a reason to wager online and play real money slots.

Casinos also use bonuses to get a leg up on the competition. Some operators undercut playthrough and deposit requirements to generate loyal users. Others go all in on a flashy welcome bonus to attract new players. At the end of the day, everyone wants to turn a profit. If an online casino offers bonuses with a fair house edge and wager requirements, it's a win-win.

Most casino bonuses are calculated based on a percentage of your initial deposit. This number typically ranges from 50-200%. This is the portion of the deposit amount you are eligible to receive as bonus cash. The bonus is usually capped at a certain amount, you’ll see 1,000 dollars often being the max amount for a bonus offer. 

Say you’re making a deposit of 1,000 and get a bonus of 100%. You then have a total of 2,000 in your player account. The bonus works just like regular cash, but of course, come with terms and conditions that could be of great importance. I’ve therefore broken down the things you want to check out before you make use of a bonus offer.

Once you find a casino bonus that fits your preferences, here is how to take advantage of the offer:

1. Review the T&C – Pay attention to the bonus terms and conditions. Check out the wagering requirements, minimum deposit, eligible games and payment methods and the expiry date.
2. Create an account - You will be required to fill out the registration form with information like name, age, address, phone number and such. This usually only takes a couple of minutes.
3. Make a deposit – Go to the sites cashier and make the required deposit to claim the offer, or more if you wish. If you’ve found one that doesn’t require a deposit, the bonus should already be in your account.

Most bonus offers come with wagering requirements, also called playthrough requirements. These conditions dictate the number of times you have to bet a bonus before you can withdraw funds. Wagering requirements are generally between 30 and 50, depending on the site and bonus type.

For example, let's say you get 100% of your first deposit up to $1,000. This bonus carries a 30x wagering requirement. You have to bet $1,000 x 30 ($30,000) to withdraw cashable bonuses. In short, look out for offers with the lowest wagering requirements!

How to Beat Wagering Requirements:

• Choose casino bonuses with a low playthrough
• Play games with high contribution rates
• Boost cash funds early with high volatility games
• Stabilize bankroll with low volatility slots

There's no shortage of ways to win more than you wager. Discover the best casino bonuses for every type of player.

An online casino welcome bonus is applied to your very first deposit at most gambling sites. A common version is a bonus that doubles your first deposit amount, with or without additional free spins in selected games. A lot of these offers are similar but throw an eye on the terms & conditions as they tend to vary more.

Online casinos with free signup bonus are ideal if you want to try out a new site without having to spend a cent. These bonuses are typically smaller than any casino deposit bonus and come with attached T&Cs like all other offers, but they’re completely free, and you even have a chance to win with it.

The latest casino bonuses and free spins are often found on the “Promotions”-page at any given casino, so keep an eye out there as you won’t necessarily find it all in your inbox. Some of the most typical offers you’ll find are:

Reload Bonuses

A reload bonus usually follows the initial welcome bonus. It essentially acts as a deposit bonus for existing players. It’s definitely nice to have if you play often. Most reload bonuses match 25-50% of a deposit up to a certain amount. Some are only rewarded for specific payment methods. If you’re interested in reload bonuses, you're in luck as most casinos listed here offer them!

Cashback Bonuses

Cashback bonuses are usually offered after you’ve played for at least a week at sites that offer them. Bonus terms always vary, but a rule of thumb is that you have to play for a certain amount one week to receive a percentage of your losses back the following week.

High Roller Bonuses

Players sporting heftier bankrolls will gain access to high roller casino bonuses through VIP-programs. These bonus offers tend to be more generous and sometimes with considerably lower wagering requirements. There are usually 5 VIP levels that offer a bigger slice of the action as you progress.

Mobile Casino Bonus

Sometimes you’ll find offers specifically for mobile use, although most online casino bonuses are available on all devices. Mobile casinos may not offer all the games you want, but you can place bets and cash in chips on the go without missing a beat. There are also casino apps by various operators that can make things easier if you log in frequently.

It can be tricky for players to sort through every casino bonus online. How do you know which ones offer you the most value? Each bonus is different, and you may not know what you’re getting until you begin gambling. 

The good news is that we have a flawless rating system that involves casino bonuses. We look at several key factors to differentiate the best from the worst:

Deposit Match and Amount

Online casinos often match a percentage of your first deposit. At most legal gambling sites, it’s usually 100% of your first payment, which is pretty fair. However, the percentage can also vary depending on the casino operator. 

Of course, the deposit match also covers a certain amount of money. Our job is to determine how much every gambling operator is willing to cover. In some instances, you can claim as much as $2,500 in extra funds. A bonus like this will often appeal to high rollovers. 

Rollover Requirements

Every player must bet the amount of their deposit a certain number of times. This is known as a rollover requirement, and it’s meant to prevent fraud/bonus abuse. We always check to see if the playthrough is manageable for every casino player. 

Gaming Eligibility

Now what’s the point of claiming a bonus if you can’t use it? Every online casino limits your eligibility to certain games. We tend to favor any bonus that gives you more freedom to explore the overall gaming selection.