Image credit: Source: UKGC and Brazil Federal Revenue Service publications. Never imply stock depicts the actual event.
Gambling channelisation, the share of all betting that flows through licensed operators, is the single number that tells you whether a country's gambling regulation actually worked, and the one governments are most tempted to ignore because the numbers next to it look better. Tax receipts, licence counts, and headline revenue can all climb while channelisation falls, and a regulator that celebrates the first three while the fourth sinks is presiding over a failure it has chosen not to measure.
Channelisation is simple to state and hard to face. If 100 units are wagered and 60 go through licensed sites, channelisation is 60%, and the other 40 flow to operators that pay no tax, run no checks, and answer to no regulator. Every goal of gambling regulation, tax revenue, consumer protection, integrity, responsible-gambling enforcement, applies only to the money inside the licensed channel; the money outside it is beyond reach by definition. That makes channelisation the master metric, and everything else regulators report a subset of it or a distraction from it.
Brazil: rising receipts, leaking pipe
Brazil is the cleanest illustration of why receipts and channelisation are not the same thing. The tax take is climbing fast: the Federal Revenue Service collected BRL4.586 billion from licensed operators in the first four months of 2026, up from BRL2.283 billion a year earlier, roughly double, with full-year 2026 revenue projected at BRL11 billion to BRL13 billion. Read alone, those numbers describe a success.
Channelisation tells a harder story. Independent estimates put illegal activity at between 41% and 51% of all betting in Brazil, according to iGaming Business. In the first half of 2025 the market handled around R$35.5 billion, of which roughly R$18.1 billion, about 51%, ran through illegal operations. A regulated market can double its tax receipts and still lose half of all wagering offshore, because the receipts come from the licensed half while the other half grows in the dark. As the same analysis put it, "fiscal results are a product of the piping. They are not proof that the piping is complete."
That line is the whole argument. Brazil built the pipe, connected the licensed operators, and is collecting from what flows through it. Whether it captures most of the country's betting, or barely half, is a separate question the receipts cannot answer. This publication tracked the fiscal wins and enforcement gap six months in; a year in, the gap is the story. The World Cup will be the sharpest test yet, because a tournament that draws a surge of casual bettors is precisely when offshore sites compete hardest for the money the licensed market is supposed to capture.
The UK: high channelisation, measured by someone else
The United Kingdom is the counter-case, with channelisation high enough that the licensed channel captures almost all betting. British online channelisation has been cited at around 97.6%, among the highest in Europe, the reason the UK model is held up as the standard others aim for.
But the UK also shows how fragile the metric is, in two ways. First, measurement. That 97.6% figure came from a commercial data consultancy and reached wide circulation via another country's regulator, not the UK Gambling Commission itself. The Commission has been openly cautious about estimating the illegal market, publishing a series on the challenges of sizing it and warning that the error margins are large. On a market of several billion pounds, even a half-point of uncertainty moves the estimate by tens of millions. The most important number in gambling regulation is also one of the least precisely known.
Second, direction. Channelisation responds to policy, and tax is the biggest lever. The UK's remote gaming duty rising to 40% raises the cost of operating inside the licensed channel, widening the price gap between a licensed book that pays the tax and an offshore one that does not. Industry modeling already projects UK online channelisation falling from its current highs toward the mid-80s after tax increases, with casino products, where channelisation is already weaker, at greatest risk. A government can raise the rate and the take in the short run while quietly lowering channelisation, discovering the trade only years later when the offshore market has entrenched. That is the tension every high-tax regulated market now sits inside.
Colombia and Peru: how to destroy channelisation with a tax code
If Brazil shows a leaking pipe and the UK a fragile one, Colombia and Peru show a government breaking its own pipe without meaning to. Both regulated online gambling early and well, then loaded the licensed channel with taxes structured to push players out, as covered in our analysis of the markets beyond Brazil. Colombia's tax on player deposits helped drive licensed online gross gaming revenue down by roughly 30%: a player who loses a fifth of every deposit on a licensed site while losing nothing offshore has reason to switch. Peru's turnover-based consumption tax does the same by another route.
The mechanism is always identical. Any tax structured on deposits or turnover rather than operator revenue widens the price advantage of the unlicensed operator, which exists specifically to collect the players that advantage sends its way. Channelisation is the casualty, even as the tax receipts go up on paper. Several governments are raising more tax and channelling less betting at once, while reporting only the first half.
Why governments dodge the number
The reason channelisation gets sidelined is political, not technical. Tax receipts are concrete, timely, and flattering; a finance minister can put them in a budget. Channelisation is an estimate, it arrives late, it carries wide error margins, and when it is bad it indicts the government's own tax and enforcement choices. A regulator that leads with licence counts and revenue chooses the metrics that make it look effective; one that leads with channelisation chooses the metric that holds it accountable, and few institutions volunteer for that.
The measurement weakness compounds the dodge. Because channelisation is genuinely hard to estimate, as the UK Commission has been honest enough to document, a government that would rather not know can hide behind the uncertainty. The Netherlands has made channelisation a stated regulatory priority, covered in the KSA's 2026 priorities, which is the right instinct. The markets that regulate well will treat measuring it as a core duty rather than an afterthought.
The metric that sorts the winners
The next two years will sort regulated markets into those that manage channelisation and those that manage optics. Brazil's World Cup is the immediate test: a surge of casual betting will show whether the licensed market captures the demand or hands it to offshore sites, visible in the gap between handle and receipts. The UK's tax increase is a slower test of the same question, a deliberate bet that channelisation is high enough to survive a squeeze. Every market copying Colombia's deposit tax or Peru's turnover tax as a quick budget fix is a test already failing, whether or not anyone is measuring it.
The reform that matters: publish the number. A regulator that reports channelisation regularly, with error margins stated honestly, and treats a falling rate as the emergency it is, will out-govern one that leads with tax receipts every time. Channelisation is the only metric that captures what regulation is actually for. The markets serious about getting it right will start by measuring it; the ones that are not will keep celebrating the receipts while the pipe leaks.
Related coverage: Brazil's regulated market, six months in | The UKGC's illegal-market disruption strategy | Latin America online gambling beyond Brazil | UK remote gaming duty rises to 40%