The Best Online Gambling Bonus Offers USA in 2021

As more states legalize online wagering, we’re almost spoiled for choice when it comes to gambling bonus offers, such as the 100% match deposit bonus with 888casino!

In our expert reviews, we look behind the scenes to the very best bonuses based on the value they offers as well as the T&Cs surrounding them. And it doesn’t stop there, as we’ve also reviewed the sites themselves to make sure that the operator is right for you going forward, based on the sports and games that you like.

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Who should make use of the comparison?

It doesn’t matter if you're a seasoned sports bettor, a casual casino buff or completely new to the world of online gambling - gambling bonus offers can help us all! If you’re starting out for the first time or simply changing providers, you’re sure to find that welcome bonuses are there to help you get started. And as gambling is quickly becoming legalized in more and more states, our aim is to bring you the best sports betting bonus offers where you are as and when they happen! Did you know that many online bookies and casinos now launched their sign up offers before betting went live in the state? Well if you didn’t, you know now, which is why it’s worth checking bonuses in your state ahead of time.

Of course, it’s not just those of you looking for a new provider who can benefit from this comparison. If you’re already signed up to a site and satisfied with it, then you can use our bonus comparison to find the VIP offers, weekly bonuses and sports event promotions that you might’ve missed. Overall, if you like casino bonus offers and/or sports bonuses, this comparison is for you. We don’t leave anyone out - it doesn’t matter your experience level, your taste in games or how often you play, the bonus comparison is here to help you!

Top5 steps for a secure & fair gambling experience 

Check the operator is licensed where you are

First and foremost, you need to check that the site you’re playing on is legit and fully legal where you are before signing up and claiming their gambling bonus offers. More and more states are making moves to legalize online wagering in some form since it was given the green light at federal level back in 2018. However, in states where betting is illegal, the black market is rife - it’s also unregulated, and extremely unsafe. If you know for a fact gambling is illegal in your state then don’t do it. If you’re certain gambling is legal in your state then ensure the site you're using has the appropriate license. 

Check the safety & security measures

We’ll bring this section all under one roof, but it encompases a few different elements. Ultimately, however it comes down to two simple things; you want to make sure the casino protects your data and your money. In advance, check the account verification process and see what encryption technology they have, such as SSL. It’s also worth sifting through the terms and conditions to see if the site shares your data with 3rd parties and if you can opt out. Payment methods can also help you manage your own online privacy. If an online casino or sportsbook has ewallet payment methods available, such as PayPal, then using these is advisable as they don’t share your bank details with the merchant. You should also check how the gambling site stores your money. The best ones will keep it offline so that it’s safe from hackers.

Read the T&Cs

This step is important for the gambling site as a whole, but is especially important when it comes to their casino bonus offers and/or sports betting promos. Before you take the plunge by signing up to a site in order to claim the welcome bonus, you want to make sure that the bonus in question is actually with your while. Check for things such as wagering requirements, qualifying bets, time limits and game/bet restrictions. If the wagering requirements are so high that the bonus could end up costing you - it’s not worth it. Similarly, if the site has sports betting bonus offers that can’t be used on the sports or bet types that you want then it’s not worth your while. When it comes to the site itself, you want to ensure they have good privacy settings, fair payout conditions and aren’t in anway designed to rip you off. Expert comparison and reviews like ours here at are here to help, but it’s always worth checking things out for yourself.

Read expert and user reviews

Start off by reading expert reviews and comparisons, which you’re already doing with us here at Each and every member of our team is an industry expert, and we know our stuff. Therefore we’re not going to recommend any betting sites or gambling bonus offers that we’re not 100% sure of. Ultimately, we’d never recommend a site or bonus that we wouldn’t use ourselves. However, as well as consulting the experts like ourselves, you should also check out user reviews to see what likeminded gamblers think of the site and their sports betting bonus offers. You should note that online gambling site reviews often contain more negative experiences than positive ones, as those with grievances tend to be more vocal. However the best gambling sites should still have plenty of positive reviews to reassure you.

Check the contact and customer service options

First and foremost, you want to use this step to ensure that the site can actually be contacted and located, as this helps ensure the site is legit. Secondly, you want to make sure they have good customer service channels in place as well as an FAQ section to help you out before you contact them. The top online betting sites should allow you to contact the customer service team before signing up, usually via the live chat. Doing so allows you to quash any doubts you may have about the sign up process and other things, such as their casino bonus offers. Additionally, you can also take the opportunity here to make sure you’re talking to an actual human being via the live chat and not a robot. What our experts look for here, is betting sites that have a customer service team that’s contactable by at least the 3 basic channels - live chat, email and phone.

Editor’s recommendation – the best operator

On balancing the best gambling bonus offers around, our editors recommendation is 888, as they offer the best combined casino and sportsbook under one roof. And of course there are excellent sports betting bonus offers and casino bonus offers to match! 888 is one of the biggest global betting sites around today and has several different platforms, with the principle two being 888sports and 888casino. 888 offers new players an excellent 100% matched deposit offer.

Of course, our editors recommendation here is based on overall balance of sports and casino offers as well as availability in states across the USA. Choosing a single operator to recommend based on their gambling bonus offers in the US is difficult as different states have different rules and only issue so many licenses. When it comes to sportsbooks, we have to give a special mention to FanDuel and DraftKings, as they are true American classics that have risen from the fantasy sports world. When it comes to casinos, Harrah’s have added their brick and mortar casinos with their excellent online presences, bring with them mouth watering casino bonus offers to match!

This is how our experts test operators – data & criteria

There’s a lot of work that goes into creating our best bonus comparisons here at Our experts work tirelessly to test the best betting sites in the country and their bonuses. We test and rate each and every site based on and endless list of criteria, however we’ve kindly summarized the most important points for you below:

Bonus Offers

Above all else this is a bonus comparison, so the first thing we’re looking for is their sports betting bonus offers and/or casino equivalents. From free bet bonus to matched deposit offers and free spins, we’re looking to find old favorites as well as new and innovative bonuses. Naturally, the focus is upon welcome bonuses, as they offer the most value and are the reason the majority of you are here. However, we’re also looking for casino bonus offers for existing customers as well as sports betting promotions. FInding the best bonuses doesn’t mean taking them at face value. We read and carefully scrutinize the T&Cs and test the bonuses ourselves to make sure that the bonus offers the value that it claims to.

Usability, look and feel

As well as having excellent gambling bonus offers, an online sportsbook or a casino also has to have a top quality website. After all, that’s the actual tool we’re going to be using in the end. It’s not all about having a sleek and stylish design here though - the site also has to be practical and user friendly. Is everything where it should be? Can I find what I’m looking for? Is my account info easy to access? These are just some of the questions we’re looking to answer when reviewing this section of an operator. Having an amazing range of betting markets with the best odds in the country as all well and good, but if it takes us an hour to actually place a bet, is it really worth our while? Absolutely not!


A good range of payment methods can make or break a site. As well as the classic wire transfer and credit card methods, we’re also looking for modern ewallets and/or cryptocurrency payments, including PayPal, Skriller and Neteller. Perhaps more important than the range of payment methods themselves is the conditions surrounding them. Ultimately, we’re looking for quick deposit and withdrawal processing times with little to know fees. You want to keep 100% of your winnings and get them as quickly as possible. When it comes to casino bonus offers and bet promos, we need to make sure that no payment methods are exempt. For example, Neteller and Skrill are often exempt from sports betting bonus offers.

Customer service

A good customer service team should be contactable via at least live chat, email and phone, and be available in all of the languages in the countries they operate. In the modern day, having a good live chat service is key to producing customer satisfaction. We want quick and easy answers without having to make a phone call and we want to speak to an actual human being at the other end and not a bot. A good customer service team should also be backed up by a help service tool and a comprehensive FAQ section.

License & Security

Here we’re looking for two simple things essentially; that the operator is licensed in the relevant state(s) and that your money and data is secure. Security features such as SSL encryption and two factor authentication are ideal. Ticking these boxes is vital in making sure the site is 100% legit and scam free. In addition, we’re looking for extra features on account verification and how they make sure all of their players are of the legal gambling age in the state of operation.

Rewards and loyalty program

Lastly, as well as ensuring that a site has great gambling bonus offers for new customers, we also want to make sure they keep existing customers happy. When it comes to online casinos, we’re looking for tiered VIP systems that reward you the further you move up the ranks. Online sportsbooks should reward loyalty and have promotional offers for big events on the sporting calendar, such as the Super Bowl and the Kentucky Derby.

Finding the right operator for you

Take a quick look through our site and you’ll find that we have a vast range of online sportsbook and casino reviews to suit a variety of needs. We’re also not shy about highlighting the best bonus offers in states across the country. From sports betting bonus offers and comparison, to casino bonus offers we’ve got something to suit you.

We rate and review each and every betting site and bonus we test based on a number of different criteria and categories. As a result, you’re sure to find a gambling site that’s exactly right for you with us here at - and we’re not just talking about experience levels here either. For example, if football really is your thing, then we’ll direct you to a sportsbook with the very best football betting offers, promotions and betting odds. In the same vein, if you’re a live casino maestro, we’ll help you find the site with the best live casinos and the bonus offer to match.


Before you go on and start checking out all of the expert sports betting bonus offers and comparison available to you here at, allow us to leave you with 3 key takeaways. Firstly, always remember to sign up to a site that has what you want - don’t just go for the bonus. Secondly, ensure that the site is legal and licensed in your state and lastly, use a payment method that keeps both your money and data safe 7 secure. Remember to bookmark this page as we’re constantly updating our reviews and comparisons for US gambling sites.

Gambling Bonus Offers FAQ

❓ What is a free bet offer?

That are quite literally tonnes of different types of free bet offers out there on the market to name. Too many to list in a short answer to be honest with you. Fortunately, the team of experts at GamblingGuy USA have sought out and explained the best ones for you! Click here to find out more!

🎰 What are casino bonuses?

Casino bonus offers come in many different forms these days, but they all essentially exist to help entice new customers to online casino & betting sites. At, we’ve reviewed the very best casino bonuses out there in the USA today, so you’re guaranteed to find something that’s right for you? Completely new to bonuses? No problem, we’ve explained all inside!

💵 Are online casino bonuses worth it?

There’s no straight answer to this question really - some are, some aren’t. You can find out the best and most worthwhile bonuses by consulting the Best Bonus Offers Comparison Guide at USA. Find the best betting bonuses in the US where you are today by bookmarking this site!!

🏧 Can I withdraw free bet winnings?

How and when you can withdraw winning made from the back of free bets or casino bonus offers depends on the terms and conditions of the site and the bonus you’ve claimed. We’ve reviewed and provided the details of the best free bet offers in the country today here at USA. Simply follow the link to find out more.

🤑 Are free bets worth it?

In many cases they’re worth a short but some may not be. It’s important to be aware of fraud bonuses and scams, so before going ahead and claiming a free bet bonus, you should consult expert review and comparison sites, such as, where experts give fair and honest bonuses tests.

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