Germany's cabinet approved a regulation on Wednesday that requires every local registration office in the country to offer residence registration online, closing a gap the government itself describes as one of the last in its digital administration.

The IT-Komponentenverordnung, approved at the cabinet meeting, is expected to enter into force on 1 December. Digital minister Karsten Wildberger (CDU) called it "a real breakthrough for digital administration that serves people" — the kind of sentence that gets tested by the numbers underneath it.

Those numbers are the story. Around 3,800 of Germany's roughly 5,000 Meldebehörden are already connected to the online service; the regulation compels the remaining ~1,200 to follow. That means about 20% of the population currently cannot register or re-register an address without going in person, and the gap is not evenly distributed: small municipalities, not big cities, are the ones missing.

The government's explanatory memorandum estimates the benefit of full coverage at roughly 344,000 hours and €8.4 million a year in time and cost saved by citizens who no longer travel to an office and wait. Set against that, the service is already one of the most used e-government offerings in the country — the gap matters precisely because the base is large.

The technical catch is identity. The service runs on the online ID function of the German national ID card (eID) with a PIN, which is free and universally available on the card but used by a minority of holders. A mandate on the supply side — every office must offer it — does nothing about the demand side: a resident without a PIN, or with an expired card, still queues.

There is also an implementation question the regulation cannot answer. A Verordnung can require that an office offer the service; it cannot conjure the integration work, staffing or change management in a small municipal IT department before December. Expect a compliance map that looks better on paper in January than it does in practice.

Why it is worth watching beyond Germany: residence registration is the front door to a state. Address data feeds tax, benefits, vehicle registration, school placement and voting rolls. Every service downstream inherits whatever friction sits at that door, and decentralised federal IT means the front door has 5,000 locks. Germany's answer — a legal mandate with a common federal component — is one of the few structural fixes in Europe that is measurable: either the remaining offices are online after 1 December, or they are not.

What to watch: how many of the ~1,200 missing offices are actually live by the deadline and how many get an extension; whether eID PIN activation rises, since the mandate's value is capped by it; and whether the promised savings are ever measured rather than estimated.