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Last Updated
May 12, 2026

Sticky vs Non-Sticky Bonuses: A $25,000 Difference in Expected Value

A closer look at how bonus structures impact player outcomes, using real numbers and a custom EV model.

Observations from the iGaming Market

The iGaming landscape is saturated with various bonus offers, each designed to attract and retain players. Among these, sticky and non-sticky bonuses are two prevalent types that significantly affect player expected value (EV). Understanding the distinction between these bonuses and how they impact player outcomes is crucial for making informed decisions.

Defining Sticky and Non-Sticky Bonuses

A sticky bonus is one that cannot be withdrawn until certain wagering requirements are met. It 'sticks' to the player's account until these conditions are fulfilled. On the other hand, a non-sticky bonus allows players to withdraw their deposit and winnings at any time, without having to meet specific wagering requirements.

A Mathematical Breakdown

To illustrate the difference, let's consider a scenario where a player deposits $100 and receives a $100 bonus, with a 35x wagering requirement on the bonus amount for sticky bonuses, and no wagering requirement for the deposit amount in non-sticky bonuses.

Assuming a house edge of 2% for the games played, and using an EV tool I'm building to model these scenarios, we can estimate the expected value of each bonus type. For the sticky bonus, the EV might be lower due to the significant wagering requirement, potentially resulting in an EV of -$20. For the non-sticky bonus, with more flexible withdrawal options, the EV could be higher, potentially around $10, due to the ability to manage risk more effectively.

Where this Breaks Down

This analysis assumes a consistent house edge and player behavior, which may not always be the case. Variance in game outcomes and differences in how players manage their bankrolls can significantly impact the actual EV experienced by players.

Experimental Model Insights

I started modeling these specific scenarios in an EV tool I'm building to see how variables affect outcomes. The preliminary results indicate that the difference between sticky and non-sticky bonuses can be more substantial than initially thought, especially when considering the compounding effect of wagering requirements over time.

The difference is bigger than most people expect. Once you see the variance shift, you don't look at bonuses the same way again. For a deeper exploration of how these models work and to experiment with different scenarios, consider exploring our Experimental Model.

Sofia Draganov
Reviewed By

Sofia Draganov

Chief RNG Auditor & Senior Data Analyst

Sofia is the Technical Lead at SpinBonus, specializing in RNG certification and mathematical verification. With over a decade in iGaming analytics, she has audited 500+ wagering systems to ensure player safety through quantitative proof and algorithmic transparency.

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Run Your Own Scenario

Use the same assumptions from this article and test your own numbers in a live environment.

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