English has one “you.” German splits social distance into Sie (formal) and du (informal), and the choice is part of politeness, not optional grammar decoration. Get the default right before you worry about perfect adjective endings: How hard is German.
Where is Sie the safe default?
Use Sie with Bürgeramt staff, Ausländerbehörde officers, police, landlords, Hausverwaltung, doctors, and most service counters. Written forms and emails to unknown recipients also stay on Sie: Bureaucracy without German and German at the clinic.
In traditional workplaces such as banking in Frankfurt, many Mittelstand factories, law firms, and older retail, Sie is the opening move with managers, clients, and new colleagues. Titles such as Herr, Frau, and academic forms often travel with that formality: German for work.
When does du take over?
Children and teenagers are addressed with du. Friends, sports teammates, and many flatmates use du once the relationship is social rather than transactional: Making friends.
Berlin start-ups, agencies, and some tech teams treat company-wide du as policy from day one. Even then, external clients or older partner firms may still expect Sie. Do not invent a switch; listen for “Wir können uns duzen,” a first-name invitation with a handshake, or a written note that the team is on du terms.
If a more senior person offers du, accept or decline politely and stay consistent. Using du with one colleague and Sie with another in the same room is normal; each relationship keeps its own setting.
Common misconceptions
Assuming English-speaking offices erase Sie fails. Many international teams still use Sie in German emails to authorities and landlords.
Assuming you should offer du to your boss to seem friendly also fails. In hierarchical settings the senior person usually offers first.
Summary
Default to Sie with institutions and new professional contacts, use du with kids and clear social circles, and wait for an explicit workplace offer before you switch. When unsure, Sie is the safer mistake in Germany.
Sources
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