Best Casino Welcome Bonuses and Promotions 2025

Welcome bonuses are, without a doubt, one of the best promos available at online casinos. They are the first impressions that platforms use to attract new players through their doors, something which they take great pride in making ever bigger and more generous as they compete for our hard-earned cash. And we, as casino enthusiasts, are here to reap the rewards.

Let’s explore these generous bonuses and exciting promotional offers to discover which U.S. sites currently offer the best bonuses in 2025.

Types of Welcome Bonuses & Promos

A casino welcome bonus is a gift from operators to new players as a welcome-on-board type of reward. It can come in various formats, in multiple parts, and even across multiple deposits. This could include bonus funds to match your first deposit, no-deposit bonuses for account verification, free spins on selected slots, cashback on losses, and many other possibilities.

With numerous choices and multiple operators competing for your attention, it can be challenging to determine what’s best for your needs. Our advice? Read the terms and conditions carefully to ensure you’re satisfied with the deal. From there, you can narrow down your options and hopefully find the best welcome bonus for your needs. What’s even better is that once you’ve signed up and claimed your bonus, the freebies don’t end there. You can enjoy a variety of ongoing promotions, loyalty rewards, tournaments, and much more every time you return to the site. Bonus!

FanDuel Casino

The first on our list is FanDuel Casino. One of the most popular operators in the United States, FanDuel offers a multi-part welcome bonus for new players, consisting of a cashback offer and 350 bonus spins on the FanDuel exclusive slot machine, Huff N’ More Puff. The bonus spins are awarded in batches of 50 spins across your first week as a new customer and expire seven days from issue.

The cashback part of the bonus is when the operator offers you a portion of your net losses from your first 24 hours of play. It’s returned to you in the form of bonus casino cash (i.e., funds that must be wagered before they can be withdrawn). FanDuel offers up to a whopping $1,000 in cash back, which is an impressive introduction to the site.

BetMGM Casino

BetMGM Casino is the online branch of the MGM Resorts casinos, and, as you would expect from such an iconic brand, it does not disappoint with its generous welcome bonus for new players.

The promo offered by BetMGM to get you through the door is a two-parter. First, the operator will give you a $25 casino cash bonus just for registering and verifying your account, with no deposit required. Then, you’ll receive a further 100% deposit match on your first deposit of $10 or more up to a maximum of $1,000 awarded as casino cash.

As we always like to remind our readers, paying attention to the terms associated with any offer before claiming is imperative. In the case of the 25 bucks on the house, you’ll have just three days to spend it with a 1x playthrough. Your deposit match part of the bonus is valid for 30 days, with a 15x wagering requirement that must be completed within 14 days of receipt.

BetRivers Casino

The final operator to highlight is BetRivers Casino, another incredibly popular site across the U.S. in states where online gambling is permitted. BetRivers offers its new signups a generous welcome bonus, this time for up to $500 in casino cashback, and an offer to match 100% of the net losses from your first 24 hours as a new account holder.

The low wagering requirement attached to the offer makes these cashback welcome bonuses so appealing to many customers. While deposit matches can require as much as 20-40x playthrough before you can get your hands on your winnings, the BetRivers cashback offer requires only 1x playthrough, which equates to a far more manageable amount for many players.

Online Casino Welcome Bonuses Across the Country

Welcome bonuses and other casino promos are an important part of your online casino journey, and you will encounter them at almost all sites in legal gambling states. It’s worth checking out what’s on offer at the many casinos available in the country, including DraftKings, Caesars, Fanatics, and Bet365, among others.