A consistent brand voice: the tone that doesn't wear out in 12 months.
Brand voice isn't just words; it's rhythm, where humor stops, where it stays silent, where it doesn't soften. If it holds for a year, there is a voice.
When launching a new brand, people assume the longest task is the visual identity. Actually the longest is the voice — because visuals get approved; owning a voice takes months.
A brand voice consists of three layers:
Character — If the brand were a person: age, profession, which city, which coffee. Not an abstraction; a concrete profile. Placed at the top of every brief.
Tone — How does this character sound when speaking? Formal, intimate, ironic, romantic? One example sentence isn't enough; you write the same content in three tones and point — 'this, not that'.
Vocabulary — Which words it avoids (forbidden list), which terms it favors (loved list). Does it say 'customer' or 'guest'? 'Buy' or 'adopt'?
The maintenance routine
Voice erodes. Every three months, an audit — the five highest-reach pieces of the last quarter, read word for word. Anything drifting from the voice gets flagged.
After a year, open the voice doc: does the brand speak today the way it did a year ago? If yes, the voice is 'built'. If not, revise.