Best US Online Casino Bonuses

Find the latest casino free bets and bonuses to play real money games at the best online casinos for US players. We've compiled a list from the legalized online casinos featuring the best bonuses you can claim.
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$25 No Deposit & $1000 Matched Bonus
Recommended
100% New Player Bonus up to $500!
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100% Deposit Match Up To $1,000
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$25 FREE + 100% up to $2,000
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100% Deposit Bonus up to $1,000

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Deposit Value$1500
Min.Max.
$10$1500
Bonus Amount$1500
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More US Casino Offers to Consider

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Best Casino Bonuses in 2021

Online casinos are always a fun way to spend your free time, but new players may not always know what they're getting into when they sign up for a gambling account.

We asked our bonus and promotions experts to review all the casino bonuses and offers available to US players in 2021, rank them, and explain them to our readers as they would to someone who has never claimed a casino bonus before.

Most casinos offer sign-up or welcome bonuses to their customers. As you can see from the list of casino bonuses above, the majority of them range between $100-$200 in cash.

Some promotions include free spins to play free slots, while others make it easier for you to claim the offer as they do not require any deposit to begin.

In this guide to the best casino bonuses in 2021, you will discover important elements to consider when claiming an offer as you'll learn

  • • What types of casino bonuses and promotions are there
  • • How are casino bonuses calculated
  • • How do wagering requirements work (and why they matter)
  • • What to look for in each offer
  • • and lots more

In other words, if you want to know which is the best online casino bonus for you - continue reading this value-packed casino guide!

Types of Casino Bonuses

Considering how may different types of casino bonuses and promotions are available at US casinos, it's always a good idea to understand why you want them and what do you want them for play before committing to an offer.

As you are about to see, most casino offers speak to very specific audiences. Some are great for slots players, while some others speak directly to the biggest spenders who sit at the tables where the highest stakes are played.

If you don't know what kind of casino offer and promotions are best for you, have a look at this list of all the most common types of promotions available at US casino sites online.

Welcome Bonuses

By far the most common offer available online, especially when in the form of a match bonus.

These casino bonuses help you get extra cash for your games, as they give you free virtual money that is added on top of the amount of your first deposit.

Most US casinos welcome you with a 100% match deposit offer, meaning they will double the amount of money you deposit on their website.

None of these bonuses is unlimited. Each offer comes with a specific cap and to make sure you always know what this is, we publish it here on our OddsChecker casino pages.

No Deposit Bonuses

Players love casino no deposit bonuses and they are constantly on the lookout for new offers to activate. No deposit bonuses are a great way for beginners to discover how the games work and how the different online casinos operate.

When you activate a no deposit bonus, you get free cash to play with as soon as you complete the signup process at the casino that offers it.

Since we know that our players love this type of casino bonus, we created a special page where we list all the online casinos with no deposit bonus offers available in the United States.

Recurring Bonuses and Promotions

Players who stick to a brand for a long time can always ripe the rewards of their loyalty as operators tend to shower with freebies those who keep coming back to play.

US casinos run lots of recurring promotions including monthly bonus offers, time-sensitive promos connected to special events like the Super Bowl or March Madness, and many of exclusive giveaways available only to their most loyal players.

High Roller Casino Offers

US casinos are particularly attached to big spenders and are prepared to go to great lengths to keep them happy and busy on their pages.

High roller casino bonuses include special match offers on deposits over high sums ($1,000 or more), a dedicated concierge who will manage their account and gaming experience, and plenty of other advantages.

Most US casinos also invite their VIP players to their premises to give them the opportunity to play live games and live once-in-a-lifetime experiences at their venues.

Free Spins

If you are a slots player, you might not need anything more than a casino with a good free spins bonus. Thus is all you need to play the games you love, for free.

Free spins casino offers may or may not require a deposit and can be connected to specific games. Some promotions let you play all the games created by a given provider (e.g. " 100 free spins on Bally slots") or a selected slot machine (e.g. " 50 free spins on Starburst").

Unless a casino explicitly states that you get free spins with no wagering requirements, you should always assume that there will be requirements to meet before you can withdraw the money you win in your free games.

Once again, if this is what your are most interested in, this list of free spins casino bonuses is a good place to start. There, you find all the latest offers together with an extensive guide to understanding terms and conditions the right way.

Mobile Casino Bonuses

Every now and then, online casinos launch mobile-dedicated offers to push players to download their casino apps or try they HTML5 mobile-friendly websites.

Mobile casino offers come and go very quickly. Online operators use them to go harder on specific campaigns -- especially when they launch new games on their websites.

If you see a mobile casino bonus available at a casino that features any games you like, take it right away as it won't stay there for long.

Terms and Conditions

With so many online casino promotions available in 2021, gamblers have plenty of opportunities to win real money for free.

However, we know how daunting can be to try to understand what promotions offer the best value, especially when you need to navigate through complicated terms and conditions.

Luckily, we're here to help you find your way and show you how the terms and conditions impact you as a player and why some can change the value of a casino promotion in an instant.

Minimum Qualifying Deposit

You should know what is the minimum deposit amount that a gambling site attaches to a bonus before you start playing. Nearly all the offers for 'regular' new players begin at $10. Those targeting high rollers have completely different limits, often targeting deposits of $1,000 or more.

Deposit Methods

Deposit offers can be connected to specific payment methods, so it's always good to check if a casino bonus matches your preferred deposit option.

Casinos use this to push for those payment methods that make deposits and withdrawal easier and faster for players (e.g. credit cards) and exclude those with high commission fees.

Wagering Requirements / Playthrough

You will have to play the bonus amount several times before an online casino will let you withdraw your winnings.

Here the rule is: the lower the wagering requirements are, the better. Most casinos have wagering requirements that range between 25x and 40x.

A 25x wagering requirement means that you need to bet your bonus amount 25 times before you can complete your first withdrawal and cash out your winnings.

Game Contributions

Different games contribute to clearing the wagering requirements in different ways. Most casinos apply the lowest percentile to the games with the best odds and the highest to the games with the worst ones.

That's why games like video poker and online blackjack, on average, contribute less than other ones like real money slots or scratch cards.

If you know what type of casino games you will be playing, look for a casino that applies the highest percentage to them. This way, clearing the wagering requirements will not require anything more than you playing your regular games.

Time Limit

Most bonuses come with a time limit that applies both to the use of the free money (or free spins) and the process of playing through to meet the wagering requirements.

Cap on Winnings

While it would be great to use casino bonuses and free spins to win unlimited amount of money online, this is simply not possible.

Nearly all bonuses come with a cap of winning, meaning there's a limit on the money you can win with each offer.

State Restrictions

We are sure you know this very well already, but online gambling for real money is available in selected US states only. The offers that are available in one might not necessarily be valid also in another one.

To know more about this and to see how different online gambling legislations impact the offers available at US casinos, you can look into the following pages:

Game Restrictions

Casino bonuses tend to be connected to specific games, especially when they come in the form of free spins or bonuses with no wagering requirements.

When this happens, you will be able to use your free spins or bonus money on specific slots and not on the entirety of the site's slot portfolio or table games.

Free sign up bonus offers cannot be used to play games with progressive jackpots.

How to Pick the Best Casino Bonus

At this point, you should know how casino bonus offers work and how to find the best casino bonus for you.

All US casinos give something to their new players. You should always look at their signup offer before you register an account and see if this matches what you like.

In general, the best casino bonuses have:

  • • Low wagering requirements
  • • A high cap on winnings
  • • Apply to your preferred payment method
  • • Can be used to play your favorite games

The US casino bonus list on this page is a great starting point to find the best free sign up bonus or a first deposit bonus that matches what you are looking for.

If you are on the fence or you are not sure about what online casino sign up bonuses give you the best value, go deeper. Browse through the casino reviews on our site and read more about each of the platforms authorised to offer real money gambling games to US players.

If you need some extra help, you can always contact us or sign up for the OddsChecker weekly newsletter, where the share tips and exclusive casino bonuses with our readers!

Frequently Asked Questions

What are online casino bonuses?

Bonuses are incentives offered by online casinos to their players. Bonuses can be connected to players opening an account on a gaming site or be a reward casinos give to their most loyal players.

How do online casino sign up bonuses work?

Most casino offers require you to register an account on a site and deposit some real money in order to activate the bonus. A small number of websites (see full list) give you the bonus right as you sign up, with no deposit needed.

Can I use casino bonuses to win real money?

Yes, unless otherwise stated, all the best online casino bonuses give you the possibility to play real money games for free and win real money.

Keep in mind that there might be wagering requirements to clear before you can withdraw your winnings from the casino account.

At OddsChecker we do our best to inform our players about all the requirements and terms and conditions with in-depth reviews of all the casino free bonus offers available to players in the United States.

What are the best online casino games with signup bonuses?

Starburst is the most popular online casino game associated to signup bonuses. Players love the low volatility and 96.1% RTP of this slot by NetEnt while casinos know that the game's popularity is a sure way to convince players to claim a Starburst sign up offer.

How to make money from online casino bonuses?

To make money from online casino bonuses you need to clear the wagering requirements connected to the offer. Once you do that, the casino will automatically lift the ban on withdrawals and allow you to keep what you win.

Before you request a withdrawal, make sure the sum you want to take out of your account does not exceed the cap on winnings specified in the casino offer's terms and conditions.

How to take advantage of online casino bonuses?

The best way to take advantage of online casino bonuses is to look for no deposit offers with no wagering requirements and no cap on winnings.

The second-best offers are those with low wagering requirements that can be used to play games like poker, blackjack, or video poker -- as these are the casino games with the best odds.

What do bonuses in %'s mean in online casino signups?

Casino deals expressed in %'s indicate that the size of the bonus will be calculated as a percentage of your deposit.

The industry standard is 100%, meaning are almost always guaranteed to get a bonus that is equal to your deposit.

What US online casino has the most no deposit bonuses?

US casinos update their bonus offers very often and our team work hard to make sure you always get access to the latest sign up bones and best casino promotions out there.

888casino, BetMGM, and Unibet Casino are known to be the brands that most frequently use no deposit offers on sign up.

To know what US online casino offers no deposit bonuses right now, you can visit this page.

Are the biggest bonuses the best casino offers?

Not always. A big casino offer with high wagering requirement is not better than a smaller bonus with lower or no requirements.

On top of this, you should always look for online casino free bonus offers that let you play more of the games you love and do not force you to spend time on games you don't like.

Where can I find a list with all the best casino bonuses?

Here on OddsChecker we are in contact with all the major operators in New Jersey, Pennsylvania, Michigan, and all the other states where online gambling is legal.

By dealing with casino bonuses at the source, we are able to publish accurate lists with all the best offers available to US players. To see what bonuses you can claim right now, visit these page.

Are bonus offers only for new players?

No. Online casinos have different offers for new and existing players. If you have found a casino site you like, you shouldn't change it because of the bonuses you see on offer somewhere else.

Browse through your site's promotions to see what they have in shop for their existing players or contact their customer support to ask for a tailor-made offer.

How do I know if I need a bonus code?

On OddsChecker we always tell you when an offer is linked to a bonus code. We even have a page where we list all the US casino promo valid in 2021.

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