What is the cheapest internet in Belgium?

Ten euros a month at Digi, for 500 Mbps symmetrical, provided its fibre already runs down your street. Everywhere else, Scarlet takes the role at €23/month. The cheapest option depends less on the operator than on the address, and the advertised price says almost nothing about the real cost. Figures collected on 19 September 2026.

What is the cheapest internet in Belgium today?

Digi Fiber 500 Mbps, at €10/month. Identical speed down and up, unlimited volume, Wi-Fi 6 router supplied, free installation. No other fibre plan on the Belgian market comes close.

The rest of the answer lies in one restriction. Digi builds its own fibre network municipality by municipality, street by street, and that rate only exists where the network is already laid. Elsewhere the question changes meaning: it becomes "what is the cheapest internet at my address", which is not the same thing at all.

The lowest rate available everywhere goes to Scarlet, with its Poco plan at €23/month. Thin contents: 50 GB, 30 Mbps down, 2 Mbps up. For unlimited use you have to move up to Loco, €34/month.

Three routes lead to cheap internet

They do not share the same coverage, the same speed ceiling, or the same entry fees. Putting them side by side settles the question faster than any ranking.

Collected on 19 September 2026 from the official pages of Digi, Scarlet and Proximus. The Proximus web promotion runs from 17/08/2026 to 30/09/2026.

Three families, then. The operator that builds its own network and undercuts everyone. The low-cost brand riding on the incumbent network. And the traditional operator, which offsets a high rate with an opening discount.

Why the cheapest option is an address before it is an offer

Two neighbours on the same street can face two different catalogues. This is the Belgian quirk that comparison sites explain worst, and it governs everything else.

A fixed internet subscription rests on a physical line, and that line belongs to a network builder: Proximus, Fiberklaar, Wyre, or Digi on its own sites. An operator can only sell you a subscription if its network actually reaches your home. Digi's ten euros are therefore not a national offer but a zone offer, expanding at the pace of the roadworks. 5G Home Internet openly plays the stopgap role: Digi reserves it for addresses where its fibre has not arrived yet but where its 5G coverage is sufficient, with a maximum of one subscription per address.

The first thing to do is therefore not to compare prices. It is to find out who serves your street, and our guide on checking fibre availability at your address explains that step by step. Without that information, any price ranking stays theoretical.

Should you trust the advertised price or the two-year cost?

The two-year cost, without hesitation. The advertised price is a shop window; the average life of an internet subscription is counted in years.

The calculation is simple and nobody publishes it. You add up the monthly payments actually due over twenty-four months, promotion first then standard rate, and you add the activation and installation fees. Here is the result for the six plans in the previous table.

Calculated on 19 September 2026 from public rates, excluding annual indexation and options.

Between the first line and the last, the gap reaches €1,051.79 over two years. For a service that, in both cases, amounts to bringing internet into a home.

The most generous promotion applies to the most expensive plan

That sentence sums up Belgian commercial mechanics better than any warning.

As at 19 September 2026, Proximus gives away three months of subscription on three fibre plans, and the value of the gift grows with the price: €179.97 on Internet Go Fiber, €194.97 on Internet Mega Fiber, €233.97 on Internet Giga Fiber. The fourth plan, Internet Light Fiber at €39.99/month, carries no web promotion at all. Proximus nonetheless presents it as "the cheapest internet with a fibre connection" in its own catalogue.

Take the calculation to the end. Internet Light Fiber, without a single discount, comes to €959.76 over two years. Internet Giga Fiber, with its €233.97 given away, comes to €1,637.79 over the same period, or €678 more. The most visible discount on the market therefore accompanies the heaviest bill, and that is exactly what a discount is for. We set out the reverse mechanism, the silent increase, in our analysis of the fibre price after the promo.

What does entering a cheap subscription really cost?

Rarely nothing, and the amounts involved sit in lines that never appear next to the monthly price. Here they are, collected on 19 September 2026 from the official rate cards.

• Activation: €29 at Scarlet, waived on Loco until 01/11/2026 for new customers.
• Installation by a technician: free if self-installation is not possible at your address, but €79 at Proximus as at Scarlet if you ask for it when self-installation was possible.
• Installing Digi's 5G Home: €40 once, antenna mounting included.
• The physical connection, when the street is not yet equipped, whose cases we costed in our guide to the cost of a fibre connection.
• Annual indexation, which is not an entry fee but adds up quickly: it applies to the standard rate, never to the promotional one.

Wallonia, Brussels, Flanders: one question, three answers

Fibre to the home, known as FTTH, remains very unevenly deployed, on the order of 78 % in Brussels, 71 % in Flanders and 44 % in Wallonia by mid-2026. That gap moves the answer from one region to another.

In Brussels, Digi started by building its own network, and it is there that its ten euros genuinely exist for the largest number of people, neighbourhood by neighbourhood. In Flanders, Fiberklaar and Wyre put several operators in competition on the same line: the choice is widest there, but the low-cost brand is still often Scarlet. In Wallonia, where a large share of streets still depends on the former VOO coaxial network or on copper, the entry level plays out between Scarlet and the cable plans, and Digi's 5G Home at €7/month becomes a serious option wherever its 5G reaches. Three markets, one country, and a national ranking that means very little without a postcode.

Does paying less mean getting less?

Not always, and that is the paradox of this market. Digi charges €10 for 500 Mbps symmetrical where a large operator charges €59.99 for 150 Mbps down and 30 Mbps up.

Paying less does expose you to two concrete limits, though. The first is volume: the 50 GB of Scarlet Poco and the 200 GB of Proximus Internet Light Fiber are consumed in a few evenings of streaming, and going over costs money. The second is upload speed, often sacrificed on entry-level plans, with the 2 Mbps of Scarlet Poco covering browsing and very little else. A plan that is too tight ends up costing more, in options or in a change of plan.

If your income qualifies you, the most profitable route is not a commercial one: the social internet offer caps the bill at €19/month, as set out in our guide to the social internet tariff. The BIPT, the Belgian telecom regulator, publishes its own official comparison of fixed tariffs and converged bundles built on real usage profiles, and runs the meilleurtarif.be comparison tool.

Our verdict, profile by profile

Four situations cover most cases.

If Digi fibre runs past your home, the question is settled: €10/month for 500 Mbps symmetrical and unlimited, €240 over two years, no competitor in range. If it does not reach you yet but Digi's 5G covers your address, 5G Home at €7/month plus €40 remains the cheapest way out, with a 100 Mbps ceiling to accept. If you want unlimited use everywhere and no minimum term, Scarlet Loco at €34/month is the safest call; Poco at €23/month only makes sense for light use. If you insist on staying with a large operator, take the entry-level plan with no promotion rather than the one that gives away the most.

One last reflex, often worth it. Check whether the saving comes from the price or from the structure of the contract: our comparison between bundle and internet only shows that the same connection costs twenty euros more or less depending on what you attach to it. And for the wider picture, speed and after-promo price included, our ranking of the best fibre internet plans in Belgium remains the starting point.