Best Slot Bonuses for 2023

Last Updated: 19/09/2023

Verified by Lee James Gwilliam

Are you looking for slot bonuses online? On this page, you will find recommendations on the best slot bonuses offered by the best slot sites.

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. Check out the best slots bonuses from some of the most trusted slots sites in your state.

Affiliate disclosure: At, we want to ensure that players are matched with the right casino and sportsbook offers for them. For this reason, some of the recommended site links are affiliate links. This means that if you visit a website through our link and make a deposit, will receive a commission payment at no extra cost to you.
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Which US States Have an Online Slots Bonus?

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, to make it easier for you to find bonuses for each state. So, bookmark this page and come back often to check for new updates.

Different Types of Slot Bonuses

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

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 an online casino 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 Slot Bonus

With no deposit bonuses, 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 and wagering requirements 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 casino 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 online casino 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 from the best US slot sites, 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.

Free Slot Bonuses

Although less common, some online casinos 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, but this number is a lot less than the average slot bonus.

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

With the advances in mobile technology over the past five years, mobile casinos have exploded in popularity, with very few players choosing desktop nowadays. This is why casinos tend to offer slots bonuses to mobile players. These slot bonuses could be mobile-exclusive offers or rewards for downloading a dedicated real money slots app.

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. VIP or high roller bonuses could include high-value free spins, bespoke bonus offers, entry into exclusive slot tournaments, and more. Reach out to customer support and see what’s in store. 

Casino Promotions

Besides the standard types of slots bonuses available, many online casinos top up 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 – These are little bit like the points you get when shopping at your favorite 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.

How to Choose the Best Slot Bonuses

Which slot bonus is the best for you? Well, it depends on your style and preferences, but we do have some tips of things to keep in mind when trying to figure out which bonus will give you the most value when playing slots for real money.

Which slot bonus gets you the most for your money?

You’ve got a budget, and you must decide which bonus to take. The best thing is to compare several slots bonuses to calculate how they can maximize your bankroll. Deposit matches are usually great at boosting your funds, but always check the wagering requirements first.

Investigate the strings attached

Reading the fine print before taking up the offer may save you lots of trouble later. The best slot bonuses carry some sort of commitment, usually in the form of wagering requirements that might apply to your bonus plus deposit or just the bonus. Do your math before you commit and work out if the play-through amount is achievable.

Check the game eligibility

Will you be able to use your free spins or bonus money on all games, on just one game or on a range of eligible games? It’s good to know these details, because you might end up playing slot games which offer nothing in terms of fun and engagement. How boring would that be? If taking part in a promotion, check also which games contribute to your wagering requirements, and in what percentages.

Consider the time limits

Nearly all types of slots bonuses are limited by time. Some may remain valid for a few days, or even a month, but others, like cashback bonuses for example, expire within a matter of hours. Terms and conditions can vary hugely from site to site.

Will you get paid?

Congratulations, you’ve landed some nice wins! You want to withdraw your winnings, but are there any caps on winnings from your bonus that prevent you from getting all your funds at one go? And how long do you have to wait for the money to reach your account? The bonus terms should clearly answer both questions.

Any hidden loopholes?

There are three things you should check in the bonus T&Cs: (1) Are any payment options excluded? (2) Is there a minimum deposit required to trigger the bonus? (3) Do you have a limited time to claim the bonus and to fulfil the wagering?

How Do Wagering Requirements Work?

Here’s one of the most discussed topics among gamblers. Bonus wagering requirements are the rules that define how a bonus works. And these rules are not always in your favor. The truth is that bonus money is given away by casino sites to encourage you to play at their site. Although at first glance it may look like the extra money you get is free, this is not entirely correct. Before you can cash out any winnings derived from your bonus, you’ll be required to meet a set of predefined wagering conditions.

Different types of slots bonuses can have different terms and conditions attached to them, so it’s crucial that you know what to expect once it’s time to cash out. A wagering requirement means that you must play the bonus amount a certain number of times before any remaining money is converted into cash.

When you claim a Welcome Bonus and agree to the terms and conditions, you’re agreeing to wager the bonus money (or in some cases, the bonus money plus your deposit) a number of times, usually between 30 and 40 times within a maximum number of days, before you can withdraw any remaining winnings. For example, if you deposit $20 and unlock an extra $20 that have a wagering requirement of 30 times that must be completed within 60 days, this means that you must wager $600 within 2 months, otherwise your bonus funds and any winnings generated from the offer will be removed from your account.

Another thing to look out for are game contributions towards the wagering requirements, so that you’ll know which games to play and which to avoid. While slots generally contribute 100% to the wagering requirements (meaning that every $1 you play counts as $1 towards the wagering), some other casino games only contribute 20% or less. The lower the percentage, the longer it will take you to fulfil the wagering requirements.

We encourage you to compare the wagering requirements of different slot bonuses before you decide to grab a bonus offer.

How to Claim an Online Slot Bonus Offer

US online casinos make this process as smooth as possible, ensuring you can lay your hands on a slot bonus in as few steps as possible. This usually involves a series of actions that start with you opening an account at any of the established or new online casinos in the USA. Let's take you through it step by step:

Step 1 - Select a top casino

Your first move is to select a great online casino. Check recommendations at to explore sites that not only offer the best slots bonuses but where you’ll also be able to play the best real money online slots, while benefitting from fast and secure payments.

Step 2 - Open a new account

Registration is an easy process. You will need to supply your home address, phone number, email address and a few other details, depending on the State regulations. The Federal Government takes identity verification seriously, but it’s all for your own safety.

Step 3 - Claim your slots welcome bonus

On the majority of slots sites, you just need to opt in to the welcome bonus to claim it, while at other online casinos you may need to enter a special casino promo code to activate a new customer bonus. Either way, you’ll be guided on how to grab your welcome offer.

Step 4 - Make the first deposit

Your first deposit is the key that unlocks the Welcome Bonus. Adding funds to your account is another smooth process that many online casinos get right. Make sure you use trusted, reliable, and fast payment methods, like Play+ or PayPal. 

Step 5 - Hit the reels and start playing

You've registered, claimed your online casino bonus, and made your 1st deposit; now it's time to start playing. Head to the lobby and look for the slots you would like to play. If you don’t have a favorite, many slots sites will offer you their recommendations on the top rated and hottest slots. Good luck!

How We Pick an Online Slots Bonus

The team entrusted with hand-picking the best slots bonuses online are slot players, just like you. If an offer is not good for them, it won’t be featured here, because their aim is to help you work out which slot bonuses are worth having and which you should avoid.

 They don’t cut corners, reviewing not only the bonus, but the entire site. Because you want peace of mind that the casino site you’ve chosen is safe and that depositing and withdrawing funds is both secure and smooth.

When our reviewers are happy with the site, they then look at the slots bonuses being offered. Here’s what they evaluate:

Type of Slots Bonuses

The first to be reviewed is naturally the new player Welcome Bonus, since this is the very first offer you’ll encounter (and usually the best). It can be either a deposit match or free spins or a combination of both. After the Welcome Offer is consumed, we also review other slots bonuses that might include no deposit bonuses codes (for extra cash or free spins), cashbacks or bonus money.

Wagering Requirements

Wagering requirements are a deal-breaker when it comes to making the decision to accept a bonus offer or not. A great bonus with unrealistic wagering requirements makes the whole offer pointless. Our experts look at how many times you need to wager your bonus before being able to cash your winnings, bonus expiration times, which games qualify towards the wagering and payment options.

Game Eligibility and Selection

You’ve decided to grab a slot bonus that looked quite attractive, and soon after, started playing your favorite slot. But suddenly you realize bets on that game don’t contribute towards the bonus wagering. We would like to help you avoid such a situation, which is why our reviewers check which games contribute to your wagering requirements, and in what percentages. We also check the casino’s game selection, because a great slot bonus is only part of a good deal. You also need a great selection of slot games to play it on, and a constant stream of new slots to keep things interesting.

Value for Money

Do the slot bonuses offer value for your money? Are there better alternatives? After all, the biggest bonuses don’t necessarily offer the best value. The reviews on offer a reality check of which bonuses are most suited for your budget.

Slot Bonus Terms & Conditions

Are you one who skips the terms and conditions and goes straight to the games? Many do that, but it’s not the right thing to do. Take a moment and scan the terms and conditions whenever you’re interested in grabbing a slots bonus. Below, we discuss the most important items to look out for.

Bonus Qualifying Games

Usually, slot bonuses are tied to selected games and playing them contributes towards the wagering requirement. These qualifying slot games should be listed in the terms and conditions, so it is useful to verify which games to play to be able to clear the bonus.

Game Bonus Contribution

Not all casino games are equal in terms of contribution. While most slot games contribute 100% towards clearing the bonus, other casino games may contribute much lower than this. Table games for example, are usually somewhere around the 5% to 20% mark.

Bonus Expiry

Most bonus offers come with an expiry date. This means that if you do not reach the wagering requirements or some other conditions by a certain time after you unlock your bonus, you will lose the bonus money and any winnings derived from it. Free spins especially tend to have a short claiming window, usually ranging from 24 hours to a week, although you may have a longer time limit in which to fulfil the wagering requirements.

Licensing Authorities and Testing Agencies

Meet the editor

Emma Trotter
Emma Trotter Editor

Emma Trotter is a Senior Editor at Emma has worked as a staff writer and editor for nearly two decades, extensively covering celebrity news and the Las Vegas entertainment, casino and tourism scenes. She spent several years in in-house roles at Caesars Entertainment and Wynn Las Vegas before stepping into iGaming affiliate site content.


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