Deutsche Glasfaser: What's behind the €24.99 offer

€24.99 a month. For every plan. Whether it's 100 Mbit or a full gigabit.

That's Deutsche Glasfaser's promotional model this summer, and it's refreshingly simple: for twelve months you pay the same price for every plan, and only after that do the regular terms kick in. It sounds almost too tidy for the telecoms industry – and indeed there are three things you should know before you order. For the record, upfront: Deutsche Glasfaser is a partner of internet-deals.de. We still give you an honest assessment – or rather, precisely because of that.

First, the substance: real FTTH

Before we do the math, a word on the technology, because it makes the difference. Deutsche Glasfaser lays FTTH – Fibre to the Home, meaning the fibre actually ends in your home, not in the grey box on the street corner. That means: full bandwidth without a shared medium, stable latency even on Sunday evenings, and upload speeds DSL customers can only dream of. If you regularly make video calls, upload photos to the cloud, or send large files, you'll notice the difference in everyday use more clearly than any speed test figure shows.

There's also a strategic argument: copper networks will be phased out step by step in the coming years – the direction has been decided both politically and technically. We already described what this means for DSL households back in January in the article on copper switch-off For the full picture. Short version: in the medium term there's no way around fibre – the only question is when and on what terms you switch.

Point 1: After twelve months, regular billing applies

Now to the fine print, which here is actually not that fine. After the promotional year, normal prices apply, and they differ significantly depending on the plan:

• Basic 100 (100 Mbit): then €39.99
• Classic 300 (300 Mbit): then €49.99
• Premium 500 (500 Mbit): then €69.99
• Giga 1000 (1,000 Mbit): then €89.99

Let's do the honest math, using the Classic 300 over the usual 24-month term: twelve months at €24.99 plus twelve months at €49.99 averages out to €37.49 per month. For 300 Mbit of real FTTH that's a decent rate – but not the bargain price from the ads. With the Giga 1000, the jump is even more pronounced: from €24.99 to €89.99, more than triple. Anyone who books the gigabit plan in a fit of enthusiasm during the promotional year should be very aware of the price from month 13 onward.

Our pragmatic advice: book the plan whose regular price you're willing to pay long-term, not the one that feels best during the promotional year. For most households that's the Basic 100 or the Classic 300 – and you can still upgrade later. After the minimum term you have no minimum term and can renegotiate or switch.

Point 2: No router included

Unlike with many DSL providers, no router is included with the contract. Deutsche Glasfaser rents you a device called "DG WLAN Plus" for €6.99 a month – over 24 months that's almost €168, and over four years already more than €330. The alternative: your own fibre-compatible FRITZ!Box, available from around €170 as a one-off purchase. It then belongs to you, moves with you if you switch providers, and can usually do more than the rental device. Thanks to free router choice, the provider isn't allowed to deny you this – we worked through the details and setup in the router choice guide guide.

Does that make the rented router pointless? No. If you don't want to deal with anything and appreciate having a contact person plus device replacement in case of problems, €6.99 is a reasonable price to pay. It's convenience versus money – just make that trade-off consciously and don't forget to factor it into your price calculation.

Point 3: The offer only applies where Deutsche Glasfaser is building

Perhaps the most important point, and also the least glamorous one: you can't simply order this plan everywhere. Deutsche Glasfaser builds mainly where the big network operators have long given a wide berth – in rural communities and on the outskirts of towns. Whether your address qualifies is clarified in seconds by the availability check.

And what if your area hasn't been built out yet, but it's under discussion? Then there might currently be a demand-bundling campaign running there: only once enough households sign up in advance do the diggers roll in. During this phase the house connection is usually free – anyone who orders individually later often pays a high three- to four-figure amount for it. Whether such a pre-contract is worthwhile and which questions you should ask beforehand, we answered in March in the big fibre rollout overview For the full picture. The short answer: if fibre can realistically only reach your street this way, the free house connection is a strong argument – even if a year often passes between signing and the first bit. Unfortunately, patience is a basic requirement with this topic.

Who is this worthwhile for?

One aspect that matters even more in summer 2026: if you work from home a lot, or four people in your household are streaming in the evening while the football match plays outside, you'll benefit more from fibre's consistency than from sheer top speed. 300 stable Mbit beats 500 shaky ones in everyday use.

Quite clearly: for households in the rollout area who are currently stuck on DSL with 16, 50, or 100 Mbit. The jump to real FTTH for €24.99 in the first year is simply a good deal, even factoring in the regular price from month 13 and the router question. The connection is also future-proof – the copper line outside your house has an expiry date, fibre doesn't.

Anyone who lives in the city and already has cheap cable or even another fibre provider to choose from should compare soberly instead of ordering reflexively. You'll find all current plans and the availability check on our Deutsche Glasfaser overview – and if you'd rather talk through your situation, get in touch via the free callback. Five minutes of conversation typically save you two years on the wrong plan.