Broadband and Mobile Contracts in Germany: Cut the Bill
A German broadband tariff advertised at €9.95 is really about €40 once the promo months end. The 2026 effective-price math on internet and mobile plans, the DSL-vs-mobile decision, and the TKG rights most internationals never use.
A German home-internet tariff advertised at €9.95 a month is really about €40. The €9.95 is a promo rate that lasts three months; then the regular price kicks in for the rest of a two-year contract. Germans pay around €42/month for internet on average, and most never notice the jump because it happens quietly in month four. Here is what broadband and mobile actually cost in 2026, the contract-law rights most internationals don't know they have, and how to stop overpaying.
TL;DR — how to cut the bill
- German broadband and mobile tariffs advertise a promo price, not the price you pay for most of the contract — compare on the 24-month effective price, not the headline.
- A "€19.99" cable contract can cost ~€300 more over two years than the headline suggests once the promo tier ends.
- Since December 2021 you can cancel a rolled-over contract with one month's notice, get a 14-day withdrawal on anything signed online, and cut the bill if your line is slower than promised.
- A budget SIM on the Telekom or O2 network from ~€5/month often beats a premium contract — the masts are shared.
- Set a calendar reminder for month 22 of any 24-month contract, or you roll into the expensive regular price.
The promo trap: read the effective price, not the headline
Almost every "best internet provider in Germany" list quotes the headline promo price and stops there. That number is close to fiction. Comparison portals rank tariffs by the Effektivpreis — the average monthly cost across the first 24 months, including the promo tier, the regular tier, and one-off fees like the ~€70 activation charge (Bereitstellungspreis). That is the only number worth comparing. Here is what three representative 2026 tariffs really cost:
| Example tariff (2026) | Promo headline | Regular price | Effective monthly (24 mo) |
|---|---|---|---|
| Vodafone GigaZuhause 50 (cable) | €19.99 (mo 1–9) | €39.99 (mo 10+) | ~€32.49 |
| Telekom MagentaZuhause M | €9.95 (mo 1–3) | €43.95 (mo 4+) | ~€39.70 |
| 1&1 DSL (no promo, flat) | €44.99 | €44.99 | €44.99 |
The lesson is counter-intuitive: the tariff with the flat €44.99 price can be cheaper over two years than the one screaming "€9.95". This is the same "run the real numbers, not the advertised one" habit that pays off when you switch energy providers in Germany — the headline and the effective cost are rarely the same thing.
Tip
When you compare, sort by the 24-month effective price and check the "regular price" line explicitly. A tariff with a small promo discount and a low regular price usually beats a huge promo discount followed by a high regular price. You can compare DSL and fibre tariffs on CHECK24 sorted this way.
DSL, cable, fibre or mobile — which line do you actually need
Before comparing prices, decide what kind of connection fits your situation. The right answer depends far more on how long you'll stay and how you use the line than on the provider's brand.
| Your situation | Connection that generally fits |
|---|---|
| Fixed flat, work-from-home, streaming or gaming | DSL, cable or fibre — unlimited data, low latency |
| Short lease, uncertain address, stay under ~12 months | 5G home router or SIM-only + hotspot — no line install, 1-month terms |
| Light home user, mostly on your phone | A premium unlimited mobile plan (~€40) can replace a home line |
| New-build with fibre available | Fibre — but watch the silent-extension trap below |
I run a homelab that has to stay reachable 24/7, so for my own line the numbers that matter are upload speed and latency, not the download figure providers advertise. Cable gives strong download but weaker upload; fibre is best on both if it's available at your address. If you only need a home line for a laptop and a TV, a mobile plan can genuinely replace it — the question is data allowance and whether your flat has good indoor 5G.
Note
A fibre contract cannot be silently extended into a fresh minimum term. A 2024/25 Bundesgerichtshof ruling confirmed that once your fibre contract's minimum term ends, the provider must let you leave on one month's notice like any other — they can't lock you back in just because the physical line is theirs.
Mobile: SIM-only price bands and the network that matters
Mobile is where the savings are easiest, because the expensive brand and the cheap discounter often ride the same masts. Coverage in 2026 runs Telekom first (~87% 5G), then O2 (~76%) and Vodafone (~75%). A budget provider (MVNO) on the Telekom or O2 network gives you that same coverage at a prepaid price. Here are the 2026 bands:
| Tier | Data | Typical price | Example |
|---|---|---|---|
| Budget MVNO | 15 GB + unlimited calls | from ~€4.99/mo | discounters on the O2 net |
| Mid, D-network | ~25 GB | ~€9/mo | resellers on the Telekom net |
| Standard contract | 15 GB+ | €19.99/mo | O2 Mobile S (revamped June 2026) |
| Premium unlimited | unlimited 5G | ~€40/mo | Telekom |
For most people, a €9 SIM-only plan on a strong network does everything a €40 contract does, minus the unlimited allowance most users never reach. The plan type that generally suits heavy travellers or hotspot-dependent users is the premium unlimited tier; the plan type that suits everyone else is a mid-band SIM-only deal you can leave on short notice. You can compare SIM-only mobile plans on CHECK24 across all the networks at once.
See what your broadband really costs on the effective price, not the promo headline.
Compare DSL and fibre tariffs on CHECK24Partner link — we may earn a commission. The price you pay never changes; comparison and contract run on the licensed portal.Your rights: the TKG rules that make switching easy
Germany rewrote its Telecommunications Act (TKG) on 1 December 2021, and the changes shifted real power to the customer. Three rights matter most:
- 14-day withdrawal (Widerruf). Any contract you sign online or by phone can be cancelled within 14 days, no reason required — the standard distance-selling protection.
- One-month cancellation after the minimum term. Once your minimum term (usually 24 months) ends, a contract that rolls over can be cancelled at any time with one month's notice. The old trick of auto-renewing you into another full year is now invalid.
- Pay less for a slow line. If your measured speed is significantly, continuously or repeatedly below what you were sold, you can reduce the monthly fee or cancel without notice. Measure it with the Bundesnetzagentur Breitbandmessung app, which produces the official report you'd need.
Warning
The single most common way people overpay is missing the cancellation window and rolling from the promo or minimum-term price onto the full regular price. Set a calendar reminder for month 22 of a 24-month contract. Comparing again at that point — and switching if a cheaper effective price exists — is a 20-minute job that can save a few hundred euros a year, the same annual-review discipline that keeps your health cover and liability insurance from quietly drifting expensive.
Frequently asked questions
How much does internet cost per month in Germany?
The average is around €42/month, but effective prices in 2026 typically run €30–€45 depending on speed and connection type. Watch the promo tier: a headline of €9.95 or €19.99 usually rises to €40+ after the first few months, so the two-year effective price is what counts.
Can I cancel my German internet contract early?
Not before the minimum term ends unless the provider breaches the contract — for example, by delivering speeds significantly below what you paid for, which lets you reduce the fee or cancel without notice. Contracts signed online can also be withdrawn within 14 days of signing.
What is the notice period on a German mobile phone contract?
During the minimum term (usually 24 months) you give one month's notice before the term ends. After the term rolls over, you can cancel at any time with one month's notice — since December 2021, providers can no longer lock you into another full year automatically.
Is a SIM-only plan cheaper than a mobile contract in Germany?
Usually, yes. SIM-only and MVNO plans ride the same networks as the big providers but skip the subsidised handset, so a mid-band plan on a strong network can cost around €9/month versus €40 for a premium contract. Buying the phone separately is often cheaper overall.
Do I need DSL or is a mobile plan enough in Germany?
For a fixed flat with heavy or work use, a wired line (DSL, cable or fibre) gives unlimited data and lower latency. For a short stay, an uncertain address, or light use, a 5G home router or an unlimited mobile plan can replace a home line without any installation.
This article is for informational purposes only and does not constitute financial or contractual advice. Tariffs and availability vary by address and change often; compare current options via a licensed portal such as CHECK24 before signing.
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