It’s hard to believe that August is already here, but having just seen an NFL game last night, perhaps it isn’t for some sports fans. Either way, it’s upon us, which means that there’s no time to waste in activating the best August 2025 fantasy promo codes. That’s why you’ll find them all here, as this article will serve as a one-stop shop for you!

Not only will you find what each of today’s August 2025 fantasy promo codes unlocks, but also how to activate each one in time for everything going on this weekend.

The Best August 2025 Fantasy Promo Codes To Activate Today

Before we get into the full details of each one individually, we’ve also got a way for the super eager fans to dive right in. You can activate each of the top August 2025 fantasy promo codes using the links in the summarized outline below:

Best August 2025 Fantasy Promo Codes: PrizePicks Fantasy Sign-Up Bonus

There has to be a first platform for this first day of the month, and PrizePicks Fantasy is the perfect one. That’s because their rotating weekly rewards makes today the ideal time to join, but first - activating the first of your August 2025 fantasy promo codes. It unlocks a guaranteed and instant welcome bonus!

Simply create your first lineup of player picks, and then, just submit it for $5 or more. Win or lose, you get a $50 bonus! Along with a 10x boost is today’s Flex Friday promo for a $20 protected play, which you can apply to a lineup for a refund in bonuses if it loses! So, be sure to join PrizePicks here to activate one of today’s August 2025 fantasy promo codes of ALARM!
 

 

 

Best August 2025 Fantasy Promo Codes: Sleeper Fantasy Sign-Up Bonus

Next up is a platform where you can enjoy the ability to combine your daily player picks with year-long fantasy leagues! That’s courtesy of Sleeper Fantasy, which also provides one of the best August 2025 fantasy promo codes. Their guaranteed welcome boost comes before you even submit your first lineup!

All it takes is your first-time deposit, which just needs to be for $10+ and up to $100. Upon doing so, Sleeper swoops in to award your account with 100% of the value in bonus funds! Along with their DAILY free player pick ‘em cards, make sure to use one of the top August 2025 fantasy promo codes of ALARM when joining Sleeper today.
 

 

 

Best August 2025 Fantasy Promo Codes: Chalkboard Fantasy Sign-Up Bonus

Speaking of free player picks each and every day, that is something that Chalkboard Fantasy provides as well. So, it should come as no surprise that they, too, have one of the best August 2025 fantasy promo codes. It’s the first one that we have for you that unlocks a two-part welcome offer!

Both rewards are guaranteed, and it takes just an initial deposit of up to $100. You’ll then receive the same amount in bonus cash AND the ability to use a free pick for your first lineup! All that and daily free picks are yours when you join Chalkboard here with another one of today’s August 2025 fantasy promo codes: ALARM.
 

 

 

Best August 2025 Fantasy Promo Codes: Dabble Fantasy Sign-Up Bonus

As for another unique opportunity, that comes from an overall unique platform - Dabble Fantasy. You’ll quickly see why we say that about the Australia-founded company, and it all starts by activating one of the best August 2025 fantasy promo codes. That’s because it unlocks a completely FREE welcome bonus!

In other words, it’s a deposit-free boost, so all it takes is you joining the platform. As soon as you do, a $10 bonus will hit your account! Their payout multipliers go above 1000x, so you can make that free bonus do plenty of work after you’ve joined Dabble today to unlock another one of the best August 2025 fantasy promo codes: ALARM!
 

 

 

Best August 2025 Fantasy Promo Codes: ParlayPlay Fantasy Sign-Up Bonus

Now, let’s get back to the two-part variety. Another one comes by way of ParlayPlay Fantasy, so of course, it’s one of the top August 2025 fantasy promo codes that unlocks it. It combines some of the components above, as there is both a FREE and deposit-based component. In either case, they’re both guaranteed!

To secure that free piece, just joining ParlayPlay will see that you get a $5 bonus to use for joining your first contest. Then, deposit up to $100 to receive 100% of the value in bonus funds! That’s up to $105 in guaranteed value when you activate yet another one of today’s August 2025 fantasy promo codes by joining ParlayPlay here!
 

 

 

Sporting Events To Target After Activating The Best August 2025 Fantasy Promo Codes

Although the NFL Hall of Fame Game is in the books, there is still plenty more preseason action to come. With that in mind, it tops the list of sporting events to consider targeting this month once you’ve activated each of the August 2025 fantasy promo codes above:

 

 
 
 
 
Â