Research commissioned by Ireland's gambling regulator shows promotional offers significantly increase betting volumes, particularly among problem gambling-prone individuals.
Apr 23, 2026 · 5 min read

A comprehensive study commissioned by Ireland's Gambling Regulatory Authority (GRAI) has revealed the significant impact of gambling inducements on betting behaviour, with vulnerable players bearing the brunt of promotional tactics designed to increase spending.
The research, conducted by the Economic and Social Research Institute's (ESRI) Behavioural Research Unit and published on 25 June, demonstrates that promotional offers such as free bets and moneyback guarantees substantially increase gambling activity, even when the underlying odds are deliberately unfavourable.
The study employed a controlled experimental approach with 622 participants under 40, providing participants with funds to place up to six realistic bets on the Euro 2024 football tournament. Researchers randomly divided the group, offering half of the participants promotional inducements while the control group received no special offers.
The results were striking. Participants exposed to gambling offers spent over 10% more than those in the control group, while the number of participants choosing not to bet was reduced by nearly half when inducements were present.
Perhaps most concerning, participants shown promotional offers were three times more likely to spend money on deliberately poor-value bets with odds significantly below market rates, highlighting how inducements can override rational decision-making processes.
622
Study participants under 40
6
Maximum realistic bets allowed
10%
Additional spending with promotional offers
50%
Reduction in non-betting participants
3x
Higher likelihood of poor-value bets
These findings arrive as Ireland prepares to implement stricter controls on gambling inducements under the Gambling Regulation Act 2024. The legislation will make targeted promotional offers an offence, prohibiting licensed operators from offering free bets aimed at specific individuals or groups.
"I very much welcome this research from the ESRI examining the impact of inducements to gamble on gambling behaviours. Having a clear evidence base is critically important to the GRAI as we commence our work in regulating the gambling industry."
— Paul Quinn, Chairperson of GRAI
The regulatory response aligns Ireland with broader European trends, as multiple countries across the continent have begun implementing similar restrictions on gambling inducements.
The research also uncovered significant knowledge deficits among regular bettors regarding promotional offer mechanics. Most participants were unaware of existing restrictions on free bets and did not understand that winning free bet stakes are typically forfeited – a finding that raises questions about promotional transparency.
"The ESRI's findings confirm that not only is the general public not aware of the dangers associated with inducements to bet, but also that the impact of these inducements go beyond simple marketing by betting companies."
— Anne Marie Caulfield, CEO of GRAI
The study was jointly commissioned by GRAI and the Department of Justice, Home Affairs and Migration, reflecting cross-government concern about gambling-related harm.
Lead researcher Diarmaid Ó Ceallaigh, a Postdoctoral Research Fellow at ESRI's Behavioural Research Unit, emphasised the implications for vulnerable populations.
"Our findings imply that gambling offers aren't merely marketing tools, but pose a real risk of financial harm, particularly among vulnerable groups. The results support the case for stricter regulation of gambling offers in Ireland, following steps already taken in other European countries, such as banning sign-up bonuses, restricting offers to at-risk individuals, and capping their value."
— Diarmaid Ó Ceallaigh, ESRI Behavioural Research Unit
European Regulatory Context
Several European jurisdictions have already implemented restrictions on gambling inducements, including Belgium's complete ban on bonuses, Germany's deposit limits for promotional offers, and the Netherlands' prohibition on welcome bonuses for new customers. These precedents provided the regulatory framework that Ireland's new legislation builds upon.
GRAI officials indicated they will work closely with Minister O'Callaghan to implement the new regulatory framework. The authority has emphasised its commitment to preventing operators from encouraging excessive or compulsive gambling behaviour while protecting vulnerable demographics including children, young people, and those predisposed to gambling harm.
The comprehensive study data will inform GRAI's regulatory approach as it begins active supervision of Ireland's gambling sector under the new legislative framework.
This research provides quantitative evidence supporting regulatory trends across Europe, where jurisdictions are increasingly scrutinising promotional practices. For operators across EU markets, the findings suggest that regulatory convergence around inducement restrictions is likely to accelerate.
The study's methodology – using controlled experiments rather than observational data – offers regulators robust evidence for policy decisions. Operators should anticipate similar research being cited in other jurisdictions considering promotional restrictions.
The 10% spending increase and tripled uptake of poor-value bets provides clear metrics for regulators to reference when justifying intervention. These findings may influence compliance frameworks beyond Ireland, particularly in markets still developing their approach to gambling inducements.
According to GRAI.
Legal Disclaimer
This content reflects a general overview of regulatory frameworks based on publicly available information. It does not constitute legal advice or a legal opinion. iGamingWriter.blog disclaims any liability arising from reliance on this material.

Written by
Oleksandra YukalchukContent Partnership Manager
Oleksandra joined We–Right™ Factory in 2022, bringing sharp communication skills and a copywriting foundation to client-facing content work. She works closely with iGaming teams to translate business goals into actionable content briefs. On iGamingWriter.blog, Oleksandra shares insights on content localization, market entry strategies, and how editorial processes work behind the scenes.
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