Guide · Brand voice
How to Define Your Brand Voice
To define your brand voice, ground it in your audience and brand values, pick a handful of tone dimensions (such as formal versus casual or serious versus playful), build a list of words you use and avoid, document do's and don'ts with before-and-after examples, then keep it consistent as you scale. Brand voice is the consistent personality your company expresses in every word it writes; tone is how that personality flexes by context. This playbook walks you through each step in order, so you finish with a one-page guide your whole team can write from. The goal is not a poetic mission statement. It is a practical reference that makes the next email, post, or article sound unmistakably like you.
Step 1: Ground it in your audience and values
Start by anchoring your voice to two fixed points: who you are talking to and what you stand for. A voice invented in a vacuum sounds generic, because it answers to no one. When you root it in a real audience and a short list of brand values, every later decision has something to push against.
Write down the audience you actually serve, not the one you wish you had. Capture how they speak, what they care about, what frustrates them, and what earns their trust. Then list three to five values that genuinely drive the business, the kind you would defend even when it costs you something. These two inputs become the test you apply to everything that follows: does this word, this sentence, this tone fit the people we serve and the principles we hold? Anything that fails the test does not belong in your voice, no matter how clever it sounds.
- Name your core audience and one or two words for how they prefer to be spoken to.
- List 3 to 5 brand values you would defend in a tradeoff, not aspirational filler.
- Note the feeling you want a reader to leave with: reassured, energized, respected.
- Collect three pieces of writing you admire and one you do not, and say why.
Step 2: Choose your tone dimensions
Define your voice as a position on a few sliders rather than a list of adjectives. Adjectives like authentic or bold mean different things to everyone. Tone dimensions force a clear choice and make the voice teachable to a new hire on day one.
Pick three or four dimensions that matter most for your category and mark where you sit on each. A legal-tech brand might land near formal and authoritative; a consumer app might sit closer to casual and playful. There is no correct position, only a position that fits Step 1. Write a sentence explaining each choice so the reasoning survives after you leave the room.
- Formal versus casual: how relaxed is the grammar, contractions, and structure.
- Serious versus playful: how much humor, wordplay, or lightness is welcome.
- Authoritative versus friendly: do you lead as the expert or stand beside the reader.
- Plain versus expressive: spare and direct, or rich with metaphor and color.
- Mark each on a 1 to 5 scale and add one line on why that point, not the extreme.
Step 3: Build your vocabulary list
Translate your tone dimensions into a concrete list of words you use and words you avoid. This is the step most teams skip, and it is the one that makes a voice operational. Dimensions describe the feel; the word list tells a writer exactly what to type.
Build two columns. On the left, signature words and phrases that sound like you, including how you refer to your product, your customers, and your category. On the right, words to avoid: jargon, hype, off-key slang, or terms a competitor owns. Add a short rule for the gray areas, such as how you handle technical terms or whether you ever use exclamation marks. Keep the list living rather than exhaustive.
- Words to use: the verbs, nouns, and phrases that feel native to your brand.
- Words to avoid: cliches, filler, and hype that undercut your credibility.
- Naming rules: what you call your product, your users, and your category.
- Mechanics: stance on contractions, exclamation marks, emoji, and acronyms.
Step 4: Document do's and don'ts with examples
Show your voice in action with before-and-after pairs, because examples teach faster than rules. A guideline like be warm but professional is easy to nod at and hard to apply. A rewritten sentence removes the guesswork and gives writers a pattern to copy directly. Pair each example with the do's and don'ts it illustrates so the principle and the proof sit together.
Take real sentences from recent content and rewrite them on-voice. Put the weak version and the strong version side by side, then add one line naming what changed and why. Cover the moments where voice is easy to get wrong: error messages, sales follow-ups, support replies, and social captions. A handful of sharp examples is worth more than a long list of abstract rules, and it doubles as onboarding material for every new writer.
Step 5: Keep it consistent as you scale
A brand voice is only as strong as its least consistent piece of content, so the final step is keeping it alive as the team and output grow. Guidelines drift the moment more people write, more channels open, and deadlines tighten. Defining the voice is the easy part; defending it at volume is the real work.
Make the guide easy to reach, review it on a set cadence, and treat consistency as something you can measure rather than hope for. Scoring each draft against your defined voice turns a subjective gut check into a number a writer can act on before publishing, and it surfaces drift early. This is where Plume fits: it encodes your voice once, then generates and scores every piece against it, so on-brand stays the default even as the team scales. Whatever tool you use, the principle holds: a voice you cannot measure is a voice that quietly erodes.
Revisit the full guide once or twice a year against where the brand and audience have moved.
- Store the guide where writers already work, not buried in a forgotten drive.
- Score drafts against the voice so consistency is visible, not guessed.
- Audit a sample of live content each quarter and fix the outliers.
- Refresh the document yearly as your audience and positioning evolve.
FAQ
What is the difference between brand voice and tone?
Brand voice is the consistent personality you express in all writing, while tone is how that voice adapts to context. Your voice stays the same whether you are writing a celebration post or an apology; the tone shifts to match the moment. Define the voice once, then let tone flex situation by situation.
How long does it take to define a brand voice?
A focused team can draft a usable brand voice in a few working sessions, roughly a week of part-time effort. The first version does not need to be perfect; it needs to be written down and used. Refine it as real content reveals what works and what does not.
Who should be involved in defining brand voice?
Keep the core group small: someone who owns the brand, someone who writes daily, and someone close to customers. A tight group makes faster, sharper decisions than a large committee. Once the guide exists, share it widely so everyone who writes can apply it.
How do you keep brand voice consistent across a team?
Document the voice in one accessible guide, use concrete examples over abstract rules, and measure how on-voice each piece is before it ships. Scoring content against your defined voice turns consistency into a number people can act on rather than a subjective opinion. Review the guide on a regular cadence as the team and channels grow.