Best Slot Bonuses USA

Slots bonuses are a great way to boost your online casino bankroll, which means you could play your favorite slots for longer and have more chances to win. You can even earn free bonus spins on the best new releases.

At SlotSource.com, we only recommend and rate bonus slot sites that offer amazing welcome promotions. On this page, we'll show you how to get started and give you all the advice you need.

Which US States have Slot Bonuses?

Currently, if you’re 21 or older you can legally play online slots for real money in the following six US states:

• Connecticut
• Delaware
• Michigan
• New Jersey
• Pennsylvania
• West Virginia

As new states regulate, specific pages for each of them will be added here, helping you find bonuses for each state easier. So, bookmark this page and come back often to check for new updates.

Slot Sites Offering Best Slot Bonuses 

There are dozens of online slots to choose from, and most slot sites will offer some kind of deposit bonus to new customers. Luckily, we've done the hard work for you. Our team of top reviewers has handpicked a range of casinos that offer lots of slot games and good signup bonuses. Register at one of our top-rated online casinos and earn free money today.

Different Types of Slot Bonuses

Slots bonuses help you enjoy real money online gambling to the full. There are many different bonus types you might encounter while playing at your favorite slots sites. Below you’ll find a list of the most popular ones, with an expert description that will help you understand the differences between them and how you can get the most value from playing real money slots.

Slots Welcome Bonus

First impressions count! So it’s no wonder that the Welcome Bonus is the most popular among slots bonuses. Offered when you sign up at a new slot site and activated with your first deposit, the Welcome Bonus can include no-deposit bonuses, a deposit match, free spins, or any combination of these as part of a package.

No-deposit Bonus

With a no-deposit bonus you play for real without spending any of your own money. You can get bonus spins on a particular slot game or bonus money which you can wager on eligible games. Although a no-deposit bonus offer doesn't require you to deposit any funds, you still need to check for withdrawal limits in case you win with the bonus.

Deposit Bonus For Slots

A deposit bonus is something you unlock with a deposit, where you’ll get an extra amount to play with on top of your funds. For example, a slot site offers you a 100% deposit match up to $200. This means that if you deposit $100, you’ll end up playing with $200. Any winnings you make will be subject to wagering requirements, so read the T&Cs before taking the plunge.

Free Spins Bonus

Many slot sites may from time to time offer you free spins when you deposit. These are usually playable on selected slots, come with a predefined value which is usually on the low side, and any winnings from your free spins are yours to keep as long as you meet any wagering requirements.

Slots Reload Bonus

How about a nice deposit boost or a bunch of free spins to increase your chances to win? Slots reload bonuses do just that. Usually a weekly offer, you’ll be able to unlock this type of bonus when you deposit above a certain amount. The bonus percentage is usually not as high as the welcome offer, but this varies from casino to casino.

Cashback Bonus

With a Cashback Bonus, you’ll be able to get a percentage of your losses back when playing a range of eligible games (or sometimes, just one specific game). To unlock a cashback offer, you would need to deposit a set amount. Usually, cashback offers expire within a short time.

No Wagering Slot Bonuses

Although less common, some slots sites do offer you the chance to grab No-wagering Slots Bonuses from time to time. These are completely free, with no strings attached, and probably, of very low value. The offer could be bonus spins, a free bet, or bonus cash.

Low Wagering Bonuses For Slots

Low wagering slots bonuses could be anything from free spins to try out a new game to some bonus money to spend as you wish. Any winnings you make from your bonus must be wagered a number of times before you can withdraw your money.

Slot-Specific Bonuses

Often, you can benefit from slots bonuses like this when a new game is launched. To attract as many players as possible to try out the new slot, online casinos give out either a bunch of free spins or bonus funds to use on that new game. To unlock a slot-specific bonus you would need to deposit, of course.

Mobile Slots Bonuses

Do you play real money slots on your mobile? You’ve probably answered yes. Actually, very few players choose desktop nowadays, which is why casinos tend to offer slots bonuses to mobile players who are in the subway waiting for the next train home or patiently waiting in line at the supermarket.

VIP Bonuses

Players love to be treated like royalty. And who wouldn’t? A VIP Bonus is usually one that is not offered as a regular slots bonus, but one reserved to award loyalty or for special occasions. If you’re loyal to your favorite slots site and play frequently, then make sure you get your name on that VIP list.

High Roller Bonuses

If you’re a regular at your preferred online slots site and play large amounts of money, chances are you’ll be on the high rollers list. This means the slot site will pamper you with extra special slots bonuses, tailored exclusively for you. Reach out to customer support and see what’s in store.

Casino Promotions

Besides the standard types of slots bonuses available, many slots sites top their offers with seasonal, weekly, or monthly promotions. While these vary from casino to casino, two common promotions are slots tournaments and VIP Loyalty programs: 

• Slots Tournaments – tournaments offer you the chance to win extra prizes on top of your casino winnings and have fun doing it! You would normally be playing a selection of qualifying games for a limited time, competing against other casino players for a place on a leaderboard. The higher up the leaderboard you go, the bigger your prize.
• VIP or Loyalty Programs – You know, it’s a little bit like the points you get when shopping at your favorite grocery store. At your online slot site, you get rewarded for your loyalty with special slots bonuses, access to exclusive slot games, free spins, cashback, free bets, and other rewards.

It's easy to get the best slot bonus and start playing online slots. All you need to do is create a casino account and opt in to a deposit bonus when you register. Let's take you through it step by step:

1. Select a top online casino

Your first move is to select a great online casino. At SlotSource.com, we only recommend the best slots bonus casinos. Our top sites offer hundreds of real money slots, fast payments and reliable software.

2. Open a new account

Registration is an easy process. You will need to supply your home address, phone number and email address. You may also need to provide a scan of your passport or driver's license in order to verify your ID. Once your email address and ID have been verified, you're good to go.

3. Claim your slots welcome bonus

You may need to enter a special promo code to activate the deposit bonus. However, all of our recommended casino sites are ready to go. Just log in and head to the Promotions section to claim your bonus and start gambling.

4. Make a first deposit

When you claim your best slots bonus, you will have to make a deposit. The top casinos let you make deposits using reliable and fast payment methods. Make secure card payments in seconds using a prepaid card, such as Play+, or through your e-wallet or bank account. For example PayPal online slots are constantly growing in popularity! 

5. Hit the reels and start playing

You've claimed your bonus and made a deposit; now it's time to start playing. Head to the lobby and select top bonus slots to play. You can claim your free cash as soon as you meet the wagering requirements.

Most online casinos offer some kind of bonus for players. But how do you know which promotions to avoid? At SlotSource.com, we only recommend casinos with the best online bonus slots offers. Their promotions have achievable wagering requirements and realistic time limits. We will never rate a casino site that offers poor terms and conditions for players.

Choosing the best slots bonus often comes down to personal preference. Free spins or a no deposit bonus are good if you have a small bankroll. A deposit bonus with a large maximum limit will be better if you are planning on playing a lot of slots.

Most casino bonuses have wagering requirements attached. The wagering requirement is the amount you must play through your deposit in order to earn free cash. When you play a first deposit bonus slots offer, there will always be strict wagering requirements, so it's vital you do some research before you start gambling on a slot machine.

Welcome bonus example: Let's take a typical example of a best slots bonus. You sign up to a casino that is offering a 100% welcome bonus on your first deposit.

Bonus terms: You are allowed to deposit and claim $20-$500. The casino will match your deposit 100% as long as you wager your deposit 30x within a 30-day period.

You decide to deposit $100. That means you would have to gamble $100 x 30, or $3,000, on bonus slots within your first 30 days. Achieve that and the casino will give you $100 in free cash.

Some casinos have a wagering requirement on your deposit + bonus. Let's say a casino has a requirement of 20x deposit + bonus. In our example, you would have to gamble 20 x ($100+$100), or $4,000, in order to get that $100.

Game eligibility: You have made your deposit, and now you need to decide which slots and casino games to play.

Choosing the right first deposit bonus slots is essential if you want to walk away with free money. Importantly, not all slots will be eligible toward the bonus. Most progressive jackpot slots will be exempt, and some high-variance video slots will be as well.

What's the reason? Well, that deposit bonus will be easy to clear if you suddenly hit a giant progressive in one spin. Usually, eligible slots will be low-variance. These pay out a lot of small prizes and make it harder for you to clear your bonus.

It's easy to find a slot bonus online. But it's essential you do a little research first. Here is our simple 5-point checklist to get you started.

1. Choose your bankroll first: Decide your bankroll before you play bonus slots and claim a promotion. Not all first deposit bonuses are the same and you may find your budget isn't big enough. Play responsibly.
2. Check the game eligibility: Many of the best slot bonuses offer 100% eligibility on all games. However, some slots may contribute 20-30% and others nothing at all. Always check the promotion terms and conditions. Even if a promotion includes the best slots game providers, some of their games may not contribute 100%. We recommend checking Netent slots or Playtech slots. They tend to offer good slot bonuses!
3. Look at wagering requirements: Even the best slots bonus has a wagering requirement. Do your math before you commit and work out if the play-through amount is achievable.
4. Consider the time limits: When playing the best online bonus slots, you might have a few days or a month to clear a promotional offer. Terms and conditions can vary hugely from site to site.
5. Check the payout schedules: You've cleared your deposit bonus, now you want to get your free cash. How long do you have to wait for your funds? Some casinos release funds immediately, while others stagger payments over a few weeks or months. Check the bonus terms first to see when you will get your money.

US Online Slot Bonuses FAQ