Technically, this year has seen some fantastic new innovations in the online casino world, and players have an ever more sophisticated gaming experience. Michael - Poker player Michael's picture
casinos US

Your Guide To The Best US casino In 2021 is the definitive internet casino guide for gamblers in the United States. Whether you're looking for top real-money promotions, the best progressive slots online, or the greatest sites for GBP banking, we have it covered.

In 2021, it's possible to enjoy the best real-money casino gambling online. With solid licenses and slick software, US players have a huge range of sites play at. It doesn't matter if you're into roulette, blackjack, or video poker, we'll show you where you can entrust your bankroll.

If you want the best bonuses on the planet, we also have the biggest promotions to give your deposit a boost.

View The US’s Top Ranked Casinos
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Our Top Rated US casino online

Number One Casino Badge
Betway Casino Logo
100 % up to $ 250
Read review
Instant - 2 Days
Karamba Logo
100 % up to $ 50
Coming soon
Instant - 2 Days
888 Logo
100 % up to $ 200
Coming soon
Instant - 3 Days
Hippodrome Casino Logo
100 % up to $ 250
Read review
1 - 2 Days
Casas Apostas
100 % up to $ 20
Read review
1 - 5 Days

Compare Top Casinos by Your Favourite Game

With so much casino action available on the net, it can be hard to get to the right sites fast. We've done the hard work for you so you can compare casinos by game. If you're a roulette nut, hit the link and find the top sites for American, European or French roulette. Slots fans can use our link to find the best in classic, 3D, and progressive slot action.

Online Casino Gambling: The Advantages

The beauty of casino online casinos in 2021 is that you can enjoy games in the comfort of your own front room. There's no need to visit a land-based casino anymore. Now, you can load up the laptop and play slots, roulette, or blackjack in comfort. There's no membership, no dress code, and no expensive drinks. You can even play for stakes far smaller than at a US bricks n' mortar casino.


How many land-based casinos in London, Manchester, or Scotland have big real-money promotions? Not many, we'd wager, and not any that offer massive bonuses just for becoming a member.

With US casinos online, you can enjoy a sign up bonus worth hundreds of GBP, plus free slots spins, holiday prize draws, and decent VIP programmes.

Range Of Stakes:

There aren't many land-based casinos where you can bet on slots for 1p a spin. And if you're hitting the roulette table, expect to wager at least $1 on the outside bets.

Casino online sites in the United States let players bet from as little as a penny. Whether you're into slots, roulette, or craps, you can try your luck without breaking the bank.

Range Of Games:

Even the biggest US casinos only have floor space for 100-200 slots and a few table games. internet gambling don't have any such worries. At the best casinos online, you can find over 500 games, with games to suit every taste and budget. You'll even find a massive selection of progressive slots with the chance of winning a life-changing fortune.

Play For Free:

If you're learning the ropes, it's good to try out unfamiliar games without risking your real cash bankroll. Casino online sites often let you gamble for nothing first. Play-money games are also great for helping you choose which titles are the best for hitting up with some real cash.

How Our Team Rates The Best Casinos Online

Holly's photo Out of the 36 checks we carry out, 5 stand out as being crucial to ensuring you’re playing on a safe, secure and trustworthy casino

Holly - Online casino expert

But if you’re researching casinos for yourself there are five really important factors you must check to ensure you’re playing on a safe site, where you stand a decent chance of winning and getting your money paid out once you want to withdraw.

Red Dog casino online experts dissect every gaming site we feature. We give all online casinos a good MOT to make sure they're running smoothly. If the promos aren't up to scratch, we'll tell you. If there's no mobile option, the slots suppliers are lousy, or the customer support team doesn't support, we'll flag it up. Here's what we look for:

  • Software/Games

    Are there hundreds of slots from a range of developers, or does the casino deal exclusively with one supplier? Is there a good spread of classic, 3D, and jackpot titles?

    What if you're into roulette or blackjack? Is there a good selection of games, and can you play via your browser for easy instant play? We scour the casino online lobbies to make sure US slots and table game players are happy.

    What's the overall RTP (Return to Player percentage) like? If there are too many games that are famed for their bad payouts, we'll tell you.

  • Security/Licensing

    All good online casinos protect their players with SSL encryption so that payments and details are safe. If you're worried about the randomness of the games, all our top-rated sites carry proper licensed and audit certificates so you know the software has been regularly tested.

    Gambling Commission eCOGRA iTech Labs Truste Verified

    All our recommended casinos come with certification from independent authorities like these to prove they’re safe and fair

  • Banking

    How fast can you get your money in and out of a casino online? Are there fees involved, and is a 'net deposits' policy used? We test all our casinos with OUR OWN actual money. We load up and cash out to time the banking procedures, and if there are any problems, the casino will score badly.

  • Promotions

    All good internet casinos carry a range of real-cash offers to help your bankroll. Whether it's a deposit reload or a big prize giveaway, we check how regular and generous a casino's promotions are. Of course, no casino online in the US is worth its salt without a good welcome bonus. We'll score sites based on the size and restrictions of their welcome offers.

  • Customer Support

    If you have a problem with payouts, winnings, or a technical glitch, the customer support team has to be on top of its game, and yours. We contact all customer support teams with a list of concerns to test their knowledge, friendliness, and helpfulness. We'll also score on whether the support team boasts email, phone, or live chat. The more methods the better.

Only US Gambling Commission Approved Sites

In 2021, every casino online supplying games to US-based customers must have a US Gambling Commission license.

At, we will never list a site that fails our own strict check for safety, fairness and trustworthiness. For extra peace of mind, every casino site we recommend comes with the US Gambling Commission seal of approval. We also have the best range of casinos that are licensed in the US in 2021.

Being approved by the USGC means that your site:

Gambling Commission
The Gambling Commission was set up under the Gambling Act 2005 to regulate commercial gambling in Great Britain in partnership with licensing authorities.
  • Is trustworthy and follows fair gaming practices
  • Is not run by people with criminal records
  • Has a sound and healthy financial history
  • Is subject to penalties for not following regulations
  • Has controls in place to prevent minors from gambling

The Gambling Commission was set up under the Gambling Act 2005 to regulate commercial gambling in Great Britain in partnership with licensing authorities.

A Guide to Finding the Best Casino Games

Online casinos offer players hundreds of games player. From slots and table games to instant-win games and even scratchcards, you will inevitably come across something you're not familiar with. Here's a look at some typical casino online games in 2021.

Slots: Most casinos have at least a few dozen video slots for real money. You can choose from classic 'fruit machine'-style games, 5-reel video slots packed with bonus rounds, or big-money progressives. Some sites exclusively deal with one slots developer. However, for a good all-round experience, it's important to find casinos with several manufacturers on-board.

Progressive Jackpots (Slots): Progressive jackpot slots work by pooling a portion of each spin. The jackpot keeps going up until it is triggered. Players could win by hitting a certain bonus payline or triggering a bonus game. Some progressives are awarded totally at random. The more players there are, the bigger the progressive, so find a casino that's popular enough to bring in the gamblers.

Progressive Jackpots (Table Games): It's not just slots that have progressives. Some table games like roulette and blackjack have pooled jackpots that trigger if players hit a certain number or hand. Look out for special branded games from developers like Playtech, as they often carry progressive jackpots.

Video Poker: Video poker is offered at many online casinos. If you've seen video poker games in your local amusement arcade, you'll recognise the gameplay: the computer deals out five cards and you must hit the best five-card poker hand. Players get to change cards and re-draw to improve their hand. Video poker is usually available in a large range of variants, with many versions featuring wild cards and bonuses.

Instant-Win Games: Scratchcards are a big draw at online casinos. Pay your 'stake' to buy a card and 'scratch off' the areas to reveal prizes. In this area of the games lobby you will also find great games like Keno (a mix of bingo and the lotto) and dice games that can reward big cash payouts.

Free-Play Games: The beauty of online casinos is that you can test out many games for free first. The 'Practice Mode', or 'Free-Play' option lets you load up a game in your browser without risking any GBP. It's a good way of getting a feel for the rules before you commit.

Progressive Jackpots

Whenever you play at designated tables or slots, you are contributing to a progressive jackpot. The way it works is that the progressive jackpot accumulates as people play. You will put in some real money which then assuming you don’t win, adds a portion of your bet to the jackpot itself. Some of them are linked between casinos, some are shared but one thing we do know is that they are all massive. The largest progressive jackpot that has ever been won online is just over $12 million. Sounds like a winner to me.

How to Avoid Blacklisted Sites In 2024

With so much choice in casinos online, it's important to stay safe. For every 50 reliable casinos there's one bad apple that doesn't pay out or offers terrible customer support. The bonuses might not pay what is advertised on the site, or the security is ripe for hackers.

With our blacklisted casinos page, you'll discover the worst casinos for real-money players. Our experts have found suspect licenses, poor auditing, and bad records on payouts.

To stay safe, just head to our top-rated casino reviews. All of our great GBP casinos have the best experience whatever your game.

7Regal Playtech
Avoid 7Regal Casino
  • Requesting notarisation for small pay-outs.
  • Frequently avoiding customer correspondence.
Cherry Red Rushpod Investments NV Casinos
avoid Cherry Red Casino
  • Refusal to pay out multiple players.
  • Reports of lost payments and winnings going missing.
Win Palace MediaNetad Management Casinos
Avoid Win Palace Casino
  • Numerous reports of denied pay-outs.
  • Site reportedly crashes when you win.
View The US’s Top Ranked Casinos

US Casinos Online - FAQs

You're now probably realising that there's a lot more to casino online casino than there first seems to be. From the games that you can take on the go with you, to the bonuses that top gambling sites so willingly offer out. We've got you covered with our frequently asked questions, to give you a helping hand as you take your first steps into the world of online gambling.

  • Are online casinos legal in the US?

    Yes. US players can enjoy slots, roulette, or blackjack at a range of real-money stakes. Players can win large amounts of GBP cash, totally legally. There's a good range of deposit on offer as well, and most sites offer fast cash-outs for US players.

  • What is the minimum age to play?

    As long as you are 18 or over, you can gamble online. When setting up an account, customers may have to provide age and ID verification. However, 16-year-olds can gamble on lotteries online.

  • How are they regulated?

    Most casinos sites have licenses from gaming jurisdictions like Gibraltar and Alderney. However, under the new Gambling (Advertising and Licensing) Act of 2014, any casino online wanting to cater to US-based players must also have a US gaming license. It's not uncommon for legit casino gambling sites to have more than one gaming license.

  • What is the tax situation?

    Under current gaming laws, customers in the US pay no tax on their online casino gambling. The 2014 laws require the casinos to pay a percentage of their revenue as tax. However, so far there seems to have been no knock-on effect on payout percentages for players.

  • Where can I find the best sites?

    You'll find the best casino rooms in 2021 right here at We have an unrivalled selection of gambling sites to play for real money on the net. The top gambling websites have great games, big regular promotions, and fast fee-free payments.

  • How do they work?

    Online casinos either work as no-download sites where players load up individual games in their browser, or as standalone apps that sit on the customer's desktop. After signing up, players access games and the lobby by logging in every time they play. A cashier handles all payments and withdrawals, and there will be an area for contacting a live customer support agent.

  • Are they safe?

    The most reliable sites have proper licenses which ensure players are safe. Sites must make sure their games and software are audited so that players won't lose out (unless they make a bad wager). Most sites have respected SSL security which makes sure payments are accurate and secure.

  • Are the games rigged?

    No. Games must be tested before being released to a casino to ensure their RNGs (Random Number Generators) are fair. A good RNG makes sure that the shuffle and deal of a blackjack deck is properly random, or the fall of the roulette ball isn't compromised. Games are never "fixed", but some slots are designed to pay players out more infrequently on average over the long-term.