The rules never followed you across the border. They followed your contract. EU roaming rules protect a plan bought inside the EU or EEA and used inside it, which means the traveller they get quoted to most often, the one flying in from outside the bloc, is not covered by any of it. Nor did the rules do the second thing they are credited with. Mobile data inside the EU still runs from $2.36 a day to $3.35 a day depending on which border you cross, for the same product bought on the same morning.

Why a 1.4x spread inside the EU matters to a traveller

On one trip the gap is small change. Three days in Paris instead of Berlin is about three dollars, and nobody reroutes a flight to save it.

The reason to look at it is what the number says about the market you are buying in. A commodity input inside a single market with one rulebook should converge on one price. On 1 August 2026 it had not. The gap follows national borders rather than geography, and it sits inside a bloc that has been legislating on roaming prices since 2007.

For a traveller that means the price is decided by where you land, in a market you never see and cannot shop. Reading the border before you buy is the whole of the available strategy.

Seventeen markets, seven prices

Seventeen European markets in the sample resolve into seven prices. Nine of them sell unlimited data by the day and eight sell a fixed 1GB allowance across seven days, so the table keeps the two blocks apart and names the unit in every row. Entry prices are those published for HelloRoam’s Europe travel eSIM.

Seventeen markets, seven price points: HelloRoam Travel Data Price Index, priced 1 August 2026 in US dollars

Units: the first nine rows are priced per day, and the last two are whole-trip totals for 1GB across seven days. The two blocks are never divided into one another. Every spread quoted below comes from the day-rate block alone, with the EU-only figure and the full-sample figure stated separately. Sampled 1 August 2026 in US dollars from published entry prices, which change without notice.

France prices at $3.35 a day against $2.36 in Germany and the Netherlands, a gap of $0.99 a day, or about 1.4x between the highest and lowest EU day rates in the index.

Two readings sit underneath that headline. The first is the floor. The lowest rate anywhere in the sample is Iceland at $2.07, which stretches the full-sample spread to roughly 1.6x, so France runs about 1.4x the lowest EU day rate and about 1.6x the lowest rate overall.

The second is the clustering. Seventeen markets landing on seven prices is the signature of banded wholesale pricing rather than country-by-country cost discovery. Neighbouring markets carry the same number because they were bought at the same tier.

Why the gap exists

Three forces set a market’s position in the table, and only one of them is regulatory.

Wholesale access costs. A visitor plan runs on capacity bought from a local network. That wholesale rate reflects what it costs the host operator to carry the traffic: spectrum, backhaul, tower density, energy, and how much capacity sits idle. Dense, well built markets sell surplus capacity cheaply. Markets carrying high fixed cost per subscriber do not.

Market concentration. Where three or four national networks compete to sell wholesale traffic, the entry price drifts towards cost. Where one or two dominate, it settles higher. The most expensive market in the index is a large one with a strong public reputation for cheap domestic tariffs, a reminder that domestic retail competition and visitor wholesale pricing clear at separate prices.

Regulation sets a ceiling, not a floor. Roam Like At Home removed retail roaming surcharges for EU residents in June 2017, and the 2022 update carried the regime through to 2032 with quality-of-service obligations attached. Both cap what an operator may charge a covered customer. Neither obliges anyone to price at the floor, and neither governs the commercial terms on which capacity is sold into a plan bought from outside the arrangement. A cap compresses the top of a distribution and leaves the bottom where it was.

What EU roaming rules cover for travellers, and what they do not

EU roaming rules attach to a plan, and the plan’s home decides them. A contract bought inside the EU or EEA and used inside it carries your domestic allowance across the border at no surcharge, subject to fair use terms that stop people living permanently on a foreign tariff.

Buy your contract anywhere else and none of it reaches you. A traveller flying in from the United States, the United Kingdom, India or Singapore pays whatever their home operator charges for international use, a figure knowable only from their own contract and liable to change without notice. That is the most common misreading of EU roaming rules for travellers, and it lands hardest on people who assumed the border had done the work for them.

The corporate version is narrower again. A work SIM registered to an entity in one member state roams protected across the others. An employee flying in from a head office outside the bloc has no such protection, whoever pays the bill.

The European Commission publishes the scope of the current regime, which is where to read it rather than in an operator’s summary.

The regulatory map and the price map do not line up

Set the table against the rulebook and the two refuse to agree.

Iceland sits outside the EU and inside the roaming regime, because the rules were carried into the EEA agreement, and it holds the lowest day rate in the sample at $2.07. The United Kingdom sits outside both and prices mid-table at $2.68. France sits at the centre of the bloc on every measure and prices highest of the nine at $3.35.

If membership or regulation set the visitor price, the boundary would show up in the table as a step. There is no step. The rules govern what a covered customer can be charged at the retail counter, and the number a visitor pays is formed somewhere else entirely, in the wholesale market of whichever country they happened to land in.

Three days in Barcelona, priced three ways

Take a standard trip. Three nights, one traveller, phone used for maps, email, calls over data and a shared cab account.

HelloRoam’s eSIM Spain page puts the day rate at $2.52, so three days of data costs $7.56. The same three days in Paris would cost $10.05 at the French rate of $3.35. Route the trip through Berlin and it is $7.08.

The absolute numbers are small. The ratio is not, and the ratio is what scales when one trip becomes a quarterly pattern.

What sets a market’s position

• Number of viable host networks. More wholesale sellers, lower entry price. The strongest single predictor.
• Network density versus population spread. Concentrated urban markets carry visitor traffic at low marginal cost.
• Tourism volume. High visitor numbers give operators reason to price wholesale capacity to move.
• Local retail pricing. Cheap domestic tariffs do not reliably pass through to visitors.
• Spectrum and licence cost recovery. Expensive auctions reach the wholesale rate card eventually.

Reading the spread before you book

1. Check whose rules you are under. The plan’s country of purchase decides coverage. An EU or EEA contract travels with you. A contract from anywhere else buys you nothing at that border.
2. Cost the border, not the continent. A blended European average hides the France problem and overstates the saving in the cheaper markets.
3. Read the unit before you compare. A day rate and a 1GB week total answer different questions, and dividing one into the other invents a number nobody sells.
4. Test the route you repeat. Run a single corridor for a quarter and compare the bill against the modelled figure.
5. Re-sample. Wholesale rate cards get renegotiated. A price taken in August describes August.

Where the comparison breaks

The recurring error is setting a day rate against a monthly allowance and calling the difference a saving. They are different units. A day rate wins only on trips shorter than the break-even against the roaming add-on it replaces, and that break-even differs by home operator.

The second is buying on the headline figure alone. Twenty cents a day stops mattering the moment a meeting moves, and a 180-day money-back guarantee keeps the purchase reversible for six months from the date you buy. Activation timing, fair use terms and whether your own number stays reachable all outweigh the last decimal place.

The third is waiting for the gap to close on its own. The roaming regime was written to protect covered customers from surcharges at the retail counter, and on that measure it works. Nothing inside it pushes two national wholesale markets towards a common number, so an extension of the regime lengthens its life without narrowing this table. Price the market in front of you.

Questions travellers ask about the EU rules

Which European country has the cheapest travel data?

HelloRoam’s lowest day rate in the sample is Iceland at $2.07, which sits outside the EU. Inside the EU the floor is $2.36 in Germany and the Netherlands. Eight markets are sold differently again, at $2.21 or $2.34 for 1GB across a whole week.

Do EU roaming rules mean I never pay extra inside Europe?

Only if your plan was bought inside the EU or EEA. Arrive from anywhere else and your home operator’s international rates apply, with no European rule standing between you and them.

Which countries outside the EU still sit inside the roaming regime?

Iceland, Norway and Liechtenstein. The roaming rules were carried into the EEA agreement, so a plan from an EU or EEA country works across all three at domestic terms for residents. Switzerland sits outside both the EU and the EEA, so any Swiss data included in a European bundle is an operator’s commercial choice rather than a legal entitlement. None of this reaches a visitor from outside the bloc. In this index, Iceland carries the lowest day rate at $2.07 while sitting outside the EU, a sign that the regulatory boundary and the price boundary run in different directions.

Why is France the most expensive market in the index?

France prices at $3.35 a day in the index, about 1.4x the $2.36 floor in Germany and the Netherlands and about 1.6x Iceland’s $2.07. The pressure comes from the wholesale side. What visitor capacity clears at in France is set separately from how cheap French domestic tariffs are for French residents.

Does the United Kingdom still count as part of EU roaming?

No. The UK left the regime entirely, so surcharge protections lapse in both directions. Here it prices at $2.68 a day, above Spain and below France.

The rule that would move the table is not a roaming rule

Nothing in the roaming file sets the numbers above. What sets them is how many networks hold a licence to sell capacity in a given market, and that gets decided in merger reviews and spectrum auctions years before it reaches anybody’s screen. Every consolidation approved in a European market retires a wholesale seller. The price a visitor sees at checkout three years later is one of the places that decision surfaces, and it surfaces unlabelled.

Which gives the table a plainer reading. One rulebook sits on top of seventeen national wholesale markets, governs the counter, and leaves the markets alone. Seven prices is what that arrangement produces, and a traveller from outside the bloc pays whichever of the seven their border delivers.

Figures: HelloRoam published entry prices for seventeen European markets, taken on 1 August 2026 and quoted in US dollars with no currency conversion applied. Advertised prices move without notice. Disclosure: HelloRoam sells the travel data plans priced above.