Best Online Casino Bonuses in the US in May 2026

Best 5 Online Casino Bonuses

All our top-rated US online casinos are strong in the bonus department. In fact, they’re strong in all areas, including games, payments, and customer support.

I’ll focus on each casino’s welcome offer, casino bonuses for existing players, and features that set them apart.

1. BetMGM Casino - $25 No Deposit Bonus + 100% Deposit Match Up to $1,000

⭐ WSN Rating: 4.8/5
📜 Legal in: MI, NJ, PA, WV
💰 Casino Bonus Offer: $25 No Deposit Bonus + 100% Deposit Match Up to $1,000
🤩 Promo Code: WSNCASINO
✅ Full review: BetMGM Casino review

Using the BetMGM Casino bonus code WSNCASINO during registration gets you a $25 no deposit bonus ($50 and 50 bonus spins if you are in West Virginia). Once you choose to deposit, you’ll get a 100% deposit match up to $1,000 ($2,500 in West Virginia).

To get the highest "Expected Value" (EV) from this bonus, play games with the highest Return to Player (RTP) percentages.

• Recommended Slot: Starmania (97.87% RTP) or Blood Suckers (98% RTP).

• The Outcome: If you play through your $100 bonus on Starmania, your mathematical Expected Value is ~$68.05 in pure profit after finishing the $1,500 wagering requirement.

• Time to Clear: At a standard pace of $2 per spin, it will take roughly 750 spins (about 45–60 minutes of play) to fully unlock your funds.

BetMGM Casino Bonus Key Terms

• You have 3 days to use the $25 No Deposit and 14 days for the deposit match.

• Slots count 100% toward wagering. Table games and Live Dealer only count 20%.

• Payout is typically under 24 hours via PayPal or Play+.

Claim your BetMGM Casino welcome bonus today! Sign up below.

Because the spins are restricted to the Huff N' Puff series, your strategy is about choosing the right version of that game.

• Recommended Games: Huff N' More Puff or Huff N' Puff Money Mansion.

• The Outcome: Based on the average RTP of the Huff N' Puff series (~96%), the mathematical Expected Value is ~$60.00 in pure profit across the 1,500 spins.

• Time to Clear: 50 spins take roughly 4–6 minutes per day. Over 30 days, you are looking at about 2.5 hours of total "work" for a statistically probable $60 profit on a $5 investment.

FanDuel Casino Welcome Bonus Key Terms & Playthrough Details

• The "First Spin" Rule: Each day, your first spin "locks" the remaining 49 spins to that specific game. Choose your favorite Huff N' Puff title wisely!

• Expiry: Each daily batch of 50 spins expires 7 days after they are credited. If you don't log in for a week, you'll lose those spins. Also, this is a time-limited offer that expires at the end of April.

• Payout Speed: FanDuel is the industry leader here; winnings from your spins can often be in your PayPal or Venmo account within 2 hours of requesting a withdrawal.

Claim your FanDuel Casino welcome bonus today! Sign up below.

3. Caesars Palace Online Casino - $10 Sign-Up Bonus + 100% Deposit Match up to $1,000

⭐ WSN Rating: 4.6/5
📜 Legal in: NJ, PA, MI, WV
💰 Casino Bonus Offer: $10 Sign-Up Bonus + 100% Deposit Match up to $1,000
🤩 Promo Code: WSNLAUNCH
✅ Full review: Caesars Palace Online Casino review

Caesars offers you two welcome bonuses. The first is a $10 no deposit bonus that is released once you successfully create an account using the Caesars Casino promo code WSNLAUNCH. After that, you’ll receive a first deposit match bonus worth up to $1,000. 

You’ll need to wager 1x to release your no-deposit bonus and 15x to release your deposit bonus.

Caesars is famous for having high-limit slots, but to clear the bonus safely, you should stick to their "hidden gems" with high payout rates.

• Recommended Game: Break The Bounty LuckyTap (98.05% RTP) or Cash Eruption (96.0% RTP).

• The Outcome: If you play through your $100 bonus on Break The Bounty, your Expected Value is ~$70.75 in profit after the 15x wagering requirement.

• Time to Clear: At $1 per "tap" or spin, you need 1,500 rounds. This will take roughly 1.5 to 2 hours of consistent play.

Caesars Casino Welcome Bonus Key Terms & Playthrough Details

• Game Weighting Warning: Avoid Table Games (Blackjack/Roulette) for this bonus. They only count 2% to 5% toward wagering, meaning it would take a massive $75,000 in bets to clear a $1,000 bonus. Stick to Slots.

• Expiry: You only have 7 days to complete the wagering. This is shorter than BetMGM, so don't wait!

• Payout Speed: Excellent. PayPal and Online Banking withdrawals usually hit your account in 24–48 hours.

Claim your Caesars Casino welcome bonus today! Sign up below.

4. Horseshoe Casino - Up to 1,000 Bonus Spins

⭐ WSN Rating: 4.5/5
📜 Legal in: NJ, PA, MI, WV
💰 Casino Bonus Offer: Up to 1,000 Bonus Spins
🤩 Promo Code: WSNTOSS
✅ Full review: Horseshoe Casino review

Horseshoe stands out by offering a "Welcome Week" instead of a single-day bonus. Their offer typically includes a 100% deposit match up to $1,000, split into two parts: one for your first day and a second for your seventh. This keeps your bankroll fresh for much longer than competitors.

You also get 20 Bonus Spins on premium titles like Double Top Dollar with a player-friendly 1x wagering requirement on those spin winnings.

Because of the 15x wagering and the 5-day time limit per match, this is a "sprint" bonus.

• Recommended Game: Hypernova Megaways (96.1% RTP) or Horseshoe Exclusive 2x3x slots.

• The Outcome: If you deposit $100 on Day 1, you have $100 in bonus credits. After betting $1,500 on Hypernova Megaways, your mathematical Expected Value is ~$41.50 in profit.

• Time to Clear: Because the deadline is only 5 days, you need to be active. At $1 per spin, you need to complete 1,500 spins - roughly 1.5 hours of play within your first few days.

Horseshoe Casino Welcome Bonus Key Terms

• The "5-Day Rule": You only have 5 days to clear the Day 1 match before it expires. This is one of the tightest windows in the US.

• Spins Value: The 20 bonus spins are valued at $0.50 each ($10 total value). Winnings from these spins only have a 1x wagering requirement.

• Payout Speed: Since it's built on the Caesars tech stack, expect payouts in 24–48 hours via PayPal or Venmo.

Claim your Horseshoe Casino welcome bonus today! Sign up below.

5. BetRivers Casino - 100% Cashback Bonus up to $500 + 500 Bonus Spins

⭐ WSN Rating: 4.5/5
📜 Legal in: NJ, PA, MI, WV
💰 Casino Bonus Offer: 100% Cashback Bonus up to $500 + 500 Bonus Spins
🤩 Promo Code: WELCOME
✅ Full review: BetRivers Casino review

BetRivers focuses on "Second Chances." Unlike other casinos that give you bonus money upfront with high strings attached, BetRivers protects your first day of play.

• The Lossback (MI, NJ, WV): For your first 24 hours, BetRivers tracks your net losses. If you deposit $100 and lose it all on Day 1, BetRivers gives you that $100 back as bonus credits. You only have to bet that $100 one time to turn it back into withdrawable cash.

• The Match (PA Only): A simple 100% match. Deposit $250, get $250. You only need to wager your bonus amount once. Most competitors require 15x; BetRivers is 15x easier to clear.

• The 500 Spins: These are released as 50 spins per day for 10 days. You must log in daily to claim them. Anything you win from the spins is cash with no further wagering.

Because the wagering is only 1x, the Expected Value at BetRivers is the highest in the industry.

• Recommended Slot: Blood Suckers (98.0% RTP) or White Rabbit Megaways (97.7% RTP).

• The Outcome: If you receive a $100 Lossback bonus and play it through on Blood Suckers, your mathematical Expected Value is $98.00. You essentially get your money back with almost zero "house edge" tax.

• Time to Clear: At $1 per spin, you only need to do 100 spins. This takes about 5–10 minutes.

BetRivers Casino Welcome Bonus Key Terms

• Excluded Games: Avoid Roulette and Baccarat. They do not count toward the 1x wagering. Stick to Slots or Video Poker.

• The 24-Hour Window: The Lossback only counts for your first 24 hours. If you lose money on Day 2, it isn't covered.

• Payout Speed: Using "RushPay," BetRivers processes over 80% of withdrawals instantly. If you use a Play+ card, you can have your cash in seconds.

Use BetRivers casino promo code WELCOME or CASINOBACK to sign up today. Click below to get started.

All Online Casino Bonuses

US online casino promo codes are always changing, which is why we keep an eye on the market. Below are some of the best real money casinos with great bonuses that you can claim right now.

Types of Casino Bonuses

Casino bonuses can be confusing to new players, particularly when it comes to wagering requirements. I too was confused when I first started out. To save you time, I’ve condensed everything I know about every type of casino bonus currently available at online casinos.

1. Deposit Match Bonus

Match bonuses double or sometimes even triple your starting deposit. For example, if you deposit $50, you’ll receive $50 worth of bonus credit.

The majority of online casino welcome bonus offers in the US are deposit matches. This helps distinguish them from reload bonuses that are a percentage of your deposit amount. 

You’ll often see these bonuses referred to as 100% deposit match offers. The “100%” refers to the fact that your bonus is worth 100% of your deposit’s value, rather than an amount more commonly associated with reload offers, such as 25%.

2. No Deposit Bonuses

A no-deposit casino bonus is exactly what it sounds like: a reward credited to your account without requiring you to add any funds first. While many of the best online casino promotions require deposits, these offers are also available for other reasons, such as simply creating an account.

For example, an online casino sign-up bonus is released once you’ve completed the registration process. In other words, you’re being rewarded for signing up to a new online casino.

However, keep in mind that no deposit bonuses still have wagering requirements. Additionally, to withdraw any winnings, you will usually need to make a small deposit to verify your payment method. The upside, of course, is that you have a good reason to do so.

3. Free Spins Bonuses

Free spins bonuses allow you to play selected slots without spending a cent. The beauty of these bonuses is that spins are the same as real-money wagers. This means you're playing for cash prizes.

In most cases, the money you win from bonus spins will be paid in site credit that can’t be withdrawn until you hit a playthrough target. The best casino bonus offers in this category pay prizes in cash that you can withdraw instantly.

Bonus spins have a set value (usually 10 cents or 20 cents) and can only be used on selected slot games.

4. Low Minimum Deposit Casino Bonuses

Low minimum deposit bonuses are the perfect middle ground for players who want to minimize risk while still playing for real money. By depositing a small amount, typically $1, $5, or $10, you can unlock welcome rewards like free spins or match bonuses that would otherwise be out of reach.

These offers are an excellent way to test a casino’s interface and payout speed without a major financial commitment. Just be sure to check the wagering requirements, as smaller deposits sometimes come with stricter playthrough rules.

• Best $1 minimum deposit casinos

• Best $5 minimum deposit casinos

• Best $10 minimum deposit casinos

5. Cashback Bonuses

A cashback casino bonus is essentially a refund on your bad luck, returning a percentage of your net losses over a specific period. Losses are a natural part of casino gaming, but these promotions act as a safety net to help you recoup some of those funds.

The refund is calculated from your net loss (total wagers minus bonuses minus wins), and in most cases, it is paid out weekly.

Cashback is arguably the best casino bonus because rebates are often paid as site credit. Unlike standard bonuses, site credit usually has a 1x wagering requirement. This simply means you can use it to play a game once, and any winnings are real cash you can withdraw.

5. Casino Bonuses for Existing Players

Bonuses for existing players are unique offers that fall outside the standard categories. Instead of being available year-round, these promotions are usually tied to specific celebrations or moments and include a mix of casino bonuses.

While casinos can get creative with these, the two most consistent types you will encounter are Seasonal Bonuses and Birthday Bonuses.

Seasonal Bonuses

The lead-up to holidays and major cultural events is a good time for casino bonus hunters. The theme of these promotions matches the event.

For example, if it’s the festive period, a casino might run a month-long Advent calendar promotion that gives away new bonuses every day.

Christmas, Easter, and Thanksgiving are the best times to collect seasonal bonuses. Every top-rated US casino has new offers during these times, so don’t be afraid to shop around for good seasonal deals. You can find the latest promotions for specific holidays here:

• Thanksgiving Casino Bonuses

• Black Friday Casino Bonuses

• Christmas Casino Bonuses

• Easter Casino Bonuses

• St. Patrick's Casino Bonuses

• Halloween Casino Bonuses

Birthday Bonuses

One of the perks you often get for climbing the ranks of an online casino’s loyalty program is a special online casino birthday bonus. In most cases, you’ll receive a few free spins or a reload bonus.

The best bonus online casino sites may also give you wager-free rewards, which means any prizes you win get paid in cash.

You must verify your identity to use legit online casinos. Therefore, it’s not a good idea to lie about your date of birth just to get an instant bonus. Be truthful, and you’ll get a reward when the time comes.

What Should I Watch Out for When Claiming a Casino Welcome Bonus?

Follow these tips to ensure you unlock your welcome bonus:

1. Make Sure You’re a New Customer

You can only claim welcome bonuses if you’re a new customer. That means you haven’t previously created an account with any site connected to the casino.

The most common mistake I’ve seen people make is thinking they’re a new customer when they’ve already got a sportsbook account.

Let’s say you joined FanDuel Sportsbook in 2024. It’s now 2025, and you want to play some online casino games. You can’t open a new account at FanDuel Casino and claim the welcome bonus because you’re already a customer.

So, if you’re trying to claim an online casino welcome bonus, make sure you’re a completely new customer. 

2. Does Your Deposit Qualify?

Deposits must meet or exceed the minimum limit to qualify for bonuses. The best casino welcome bonus offers usually have a minimum deposit of $10, but some low-minimum-deposit casinos accept $5.

You should also check that your chosen casino payment method is eligible.

3. Play Through Your Bonus Like a Pro

Unless it’s a wager-free bonus, you’ll need to hit a casino playthrough target before you can request a withdrawal. These targets are always multiples of your bonus. For example, if you claim a $10 bonus with a 5x playthrough, you need to wager 5 x $10 ($50).

The most efficient way to meet playthrough targets is to play popular online slots. Not only are betting rounds over sooner in slots than in other casino games, but 100% of your wager counts. That’s not the case for most casino table games.

The average contribution weighting - i.e., the percentage of a bet that goes towards your playthrough target – for table games is 10%. So, if you wager $1 on blackjack, only 10 cents goes towards your target.

The same $1 wager on a slot game clears $1 of your target, which is why pros play slots when they’re chasing bonuses.

4. Watch the Clock

All offers have an expiration date. In most cases, you’ll have between seven and 14 days to hit your playthrough target.

Some online casino bonuses have a 30-day playing period. Whatever the time limit, make sure you’ve hit your playthrough target before the bonus credits expire.

5. Don’t Game the System

This tip is one that very few people talk about, simply because they don’t know about it. I’ve been around the block more than once, which is why I never try to game the system.

By that, I mean you shouldn’t play in a way that’s either illegal or that contravenes a casino’s bonus terms. Illegal activities include fraud (i.e., having multiple accounts), exploiting a casino’s software, and playing with money that isn’t yours.

Contravening a casino’s bonus terms is when your bets breach the rules. For example, betting on restricted games doesn’t contribute to your playthrough target. Another overlooked mistake is system betting.

Otherwise known as low-risk betting, these strategies are frowned upon by online casinos. If you’re deemed to be using a low-risk strategy, such as covering over 90% of the board in roulette, your bonus will be revoked.

How Do I Claim My Online Casino Welcome Bonus?

Claiming your online casino welcome bonus is easy. As long as you’re a new and eligible player (21+ in a state with legal online casinos), it takes just four steps to claim an online casino welcome bonus:

1. Use our safe sign-up links to start the registration process.

2. Enter your details and enable the casino’s geolocation tracker to register. *Enter a bonus code, if required. If you use our links, the code will be added automatically.

3. Verify your account via the link sent to your inbox.

4. Open the cashier page and make a qualifying deposit.

Complete those steps, and you’ll receive your casino bonus as a new customer.

How to Use Casino Bonuses Responsibly

I’ve shared my top tips on welcome bonuses, which also apply to ongoing offers such as reload bonuses. However, there’s one crucial topic we haven’t covered yet: playing responsibly.

While I’ll end this guide with general advice on responsible gambling, I want to focus first on how you should view bonuses. Treat every offer, even the very best ones, as an optional "extra," not a necessity.

It can be tempting to chase every promotion, especially when they offer payouts of $1,000 or more. But if you play recklessly, you risk losing far more than you stand to gain. This usually happens when you:

• Skip the T&Cs: You claim a bonus blindly and get stuck fighting an unreasonable playthrough target.

• Overspend: You deposit more than you can afford just to unlock a bigger match.

The result is always the same: you end up playing more often and for higher stakes than you should. To avoid this trap, keep these three rules in mind:

1. Bonuses are extras; never count them as part of your bankroll.

2. Read the terms so you fully understand the requirements before you start.

3. Walk away if you can't comfortably hit the playthrough target; it’s better to let a bonus expire than to chase losses.

Follow these three rules, and you won’t make the same mistakes other players do.

Casino Sites to Avoid

We only endorse and work with licensed online casinos that are regulated in the states where they operate. We recommend avoiding unregulated offshore casinos, regardless of how appealing their welcome bonuses may seem. If things go wrong, you won’t have any legal protection.

Here are three online casino sites that I recommend avoiding:

• Bovada Casino: Bovada is a casino to avoid due to its unregulated practices and poor customer service. Based in Costa Rica, this offshore casino accepts players from the US despite not having a domestic gambling license. Several states have sent cease-and-desist letters to Bovada to prevent it from advertising as a US-based casino.

• Raging Bull Casino: The casino has received several customer complaints about non-payment of winnings. The company claims to be licensed in Curaçao, although there is little information online about its licensing or ownership. They market to players in the US despite not having a legal license to operate here.

• Black Lotus Casino: The state of Michigan sent Black Lotus Casino a cease-and-desist letter in March 2025, ordering it to cease operations in Michigan. This casino isn’t licensed to operate in any US state and has been reported by US banks for making fraudulent transactions. We've also received reports from players about non-payments and poor customer support.

Why You Should Trust Us

Online casinos continually launch new promotions and bonuses, so staying on top of the best US online casino bonuses requires a dedicated team with years of experience. This is where our team steps in to lend a helping hand. Here is how we do it:

• The WSN team has over 40 experts from both the sports and casino industries.

• We reviewed more than 30 online casinos to bring you the best online casino bonuses.

• Our team spends at least 12 hours over the course of one week analyzing and claiming bonuses for each individual casino, or longer if necessary, to fully test the casino bonus.

• All our testing is based on first-hand experience. We don't rely on others' opinions; we test everything ourselves.

• Not sure about playing at a casino? We have the answer. WSN offers a detailed learning hub with over 40 guides and videos to teach you everything you need to know before you start claiming the best casino bonuses.

• WSN's Responsible Gambling Center features 10 articles and videos created by our responsible gambling experts to help you manage your spending and avoid common pitfalls.

• While we value and respect our experts' opinions, we also want to hear what our readers think. Feel free to reach out and let us know.

How We Rate

Our experts invest a minimum of 12 hours per week on each review, testing every feature a casino offers, including bonuses. We provide them with at least $1,000 to use during their evaluation, ensuring they test everything from payment methods to casino game software. We leave no stone unturned, and we grade everything using our BetEdge rating methodology.

Check out our rating process and BetEdge methodology.

Once a review is published, we spend at least 2 hours per month updating it to ensure it remains up to date. For our ‘best of’ pages, like our best online casino bonuses page, we spend at least 5 hours verifying every aspect of it and updating it accordingly. But that isn’t all! Twice a year, we do a full review of all casino operators and our ‘best of’ pages to ensure they continue to meet our high standards and provide you with the most accurate information.

Everything is done in accordance with our editorial principles. Learn more about WSN editorial principles.