What a brand voice guide must include. Six parts, no novel.

Your brand voice guide was written for agencies and designers. Today your team and your AI tools read it too, and many guides skip exactly what they need.

Short answer: A brand voice guide is a short document that describes how a company writes: tone, preferred and banned words, sentence habits, how to address readers, and real examples. In the age of AI it also works as a briefing, so people and AI tools can reproduce your voice without guessing.

A brand voice guide is a short document that tells people, and now AI tools, how your company writes. The problem we see in many teams is simple: the guide exists, but nobody can use it on a Tuesday afternoon with a blank page and a deadline.

Maybe yours is a 60-page PDF from a rebrand. Maybe it is two lines on a slide: friendly, professional, innovative. Both fail for the same reason. They describe how the brand wants to be seen, not how a text should be written.

What a brand voice guide is, and what it is not

A brand voice guide answers one question: how do we sound when we write? It is not a brand book. Logo, colors and mission belong somewhere else. It is also not a list of adjectives. Adjectives tell nobody which sentence to write next.

A useful guide is short enough to read in ten minutes and concrete enough to settle an argument about a comma, a greeting or a headline.

The six parts a brand voice guide must include

1. Tone, with a limit

Pick three adjectives and give each one a limit. Warm, but not chatty. Direct, but not blunt. Confident, but without superlatives. The limit does the work. Without it, every adjective stretches until it fits any text.

2. Words we use and words we never use

Collect the terms that belong in every text and the ones that make you cringe. A short banned list saves more editing time than any style chapter. We wrote about why in Your brand needs a banned words list.

3. Sentence habits

How long are your sentences? How do you open an email? With the problem or with the greeting? Two or three habits are enough, as long as they are visible in the examples.

4. Address and register

Du or Sie, we or I, first name or surname. It sounds small. It is the first thing a reader notices, and the first thing that breaks when five people write for one company.

5. Examples, good and bad

One good and one bad example per channel: website, proposal, LinkedIn, support reply. People copy examples faster than they follow rules. A bad example next to a good one shows where your voice ends.

6. Who reads what

A short note per channel: who reads this, and what do they want? A CFO reading a proposal needs different sentences than a student reading your newsletter. The voice stays the same. The sentences change.

Why AI changes what a brand voice guide needs

A new colleague can ask what you mean by "professional". An AI tool cannot. It takes your guide literally, or not at all, and fills every gap with the average of the internet. That average is where generic text comes from.

So the guide needs two things it often lacks. First, wording a machine can act on: rules, limits and examples instead of mood. Second, a form you can paste into a prompt. We described this in Your brand guidelines are a system prompt.

If every colleague writes their own prompt, you get as many voices as colleagues. We covered that in ChatGPT for teams.

A ten-minute test for your brand voice guide

Take your guide and a real task, for example a reply to a customer. Paste both into an AI tool and ask for a draft. Then check three things:

• Does the draft use words from your preferred list?

• Is anything from your banned list in there?

• Would a colleague recognise the draft as yours without the logo?

If the answer is no twice, the guide is the problem, not the tool. Fix the guide first. Structure first, intelligence second.

One guide for the company, one voice per person

A guide for the company is only half the job. People sound different, and they should. In VERA for Business, the Company Layer holds the shared voice: tone, words, examples. The Individual Layer holds how each person sounds inside those limits. That is the difference between consistent and uniform.

Conclusion

A brand voice guide earns its place when someone can write with it on a bad day. Keep it short, make it concrete and test it with the tool your team already uses. A guide nobody can apply is just a nice PDF. Write yours so a stranger could follow it.

Want to see how VERA for Business turns your voice into something people and AI tools can use? Take a look at VERA for Business.

FAQ

What is a brand voice guide?

A brand voice guide is a short document that describes how a company writes. It covers tone, preferred and banned words, sentence habits, how to address readers and examples, so every text sounds like the same company.

How long should a brand voice guide be?

Short enough to read in ten minutes. For most teams that means a few pages with concrete rules and examples, not a full brand book. If nobody opens it during real work, it is too long or too vague.

Can I use my brand voice guide with ChatGPT?

Yes, if it is written as concrete rules and examples. Paste it into your prompt or a project instruction and ask for a draft. If the draft does not sound like you, the guide needs clearer limits, not the tool.

This Blogpost was created with the support of AI