Dutch gambling tax hikes yield less than 5% of forecast revenue as market shrinks

TL;DR: The Netherlands' gambling tax hikes (raising rates from 30.5% to 37.8% between January 2025 and January 2026) fell dramatically short of revenue targets, generating approximately 59 million euros total instead of the forecasted 324 million euros.

According to a joint monitoring report by the Dutch Ministry of Finance and gambling regulator Kansspelautoriteit (KSA), the Treasury projected the two-phase tax increases would yield approximately 108 million euros in additional revenue during 2025 and 216 million euros in 2026. Actual results: roughly 2 million euros extra in 2025 and an estimated 57 million euros in 2026 relative to 2024 baseline figures.

The primary culprit was a shrinking tax base. The gambling tax is calculated on Gross Gaming Revenue (GGR), which contracted due to several concurrent factors. New player-protection rules implemented in October 2024 set monthly net-deposit limits at 300 euros for younger adults and 700 euros for those 24 and older. Advertising and sponsorship restrictions (TV programme sponsorships banned July 2024, sports team and kit sponsorships banned July 2025) narrowed marketing reach. Post-UEFA Euro 2024 revenue gains faded, and ongoing regulatory scrutiny created market uncertainty.

The impact extended to state-controlled operators. Holland Casino's pre-tax profits declined approximately 27 million euros in 2025 and 54 million euros in 2026. Nederlandse Loterij expected reductions of about 16 million euros in 2025 and roughly 34 million euros in 2026 across corporate tax, statutory levies, and profits. These declines partially offset tax gains.

Land-based operations faced particular strain. Casino and gaming hall visits fell roughly 11% year-on-year from Q1 2025 to Q1 2026. Gaming hall closures continued, with operators publicly attributing venue shutdowns partly to compressed operating margins from the tax increases. KSA's 2025 annual report indicated declining market share for licensed operators, suggesting potential migration to unlicensed alternatives.

Charitable and sports contributions remained relatively stable, with charity payments increasing modestly by 1.8% and sports contributions declining 3.6% between 2024 and 2025. The report found no robust evidence that the initial tax rise materially affected charitable giving levels.

Why this matters: The Dutch case illustrates the tension between revenue maximization and market regulation. Tax increases designed to fund player protections and public benefits may ultimately shrink the tax base faster than they raise rates, potentially limiting government revenues and pressuring operators' ability to fund harm-reduction initiatives. The Netherlands' experience suggests policymakers face a threshold beyond which further tax increases risk counterproductive outcomes in regulated markets.

Our take: This outcome reflects a broader principle in regulated gambling jurisdictions: operators have limited flexibility to absorb tax increases when their market is simultaneously constrained by protective regulations and advertising restrictions. The Dutch data demonstrates that tax policy cannot be isolated from concurrent regulatory changes when forecasting revenue impacts.