Brand voice guidelines only work when your team actually reaches for them, and most never get opened twice. The problem is rarely effort. It is that the document reads like a branding exercise instead of a working tool, so writers skim it once and fall back on instinct. This guide walks through how to write brand voice guidelines in six steps, so the finished document is short, specific, and used on every draft.
What brand voice guidelines are and why they matter
Brand voice guidelines are the written rules that define how a brand sounds: its personality, the words it uses and avoids, how its tone shifts by context, and what its writing should never do. Think of them as the bridge between knowing what brand voice is and applying it consistently on real work. Without them, voice lives in one person’s head, and it leaves when they do.
For an agency, that gap is expensive. Every new writer, freelancer, and client handoff is a chance for the voice to blur, and the early signs of content drifting off-brand show up fast when the rules are vague or unwritten. Good guidelines turn a subjective feel into something a whole team can follow, which is the difference between a brand that sounds like itself everywhere and one that sounds like whoever wrote it last.
How to write brand voice guidelines in 6 steps
The six steps below move from raw material to a finished, enforceable document. Keep the whole thing short, most usable brand voice guidelines fit on two or three pages, because length is the enemy of adoption.
The path from raw content to enforced brand voice guidelines
Brand voice guidelines
Step 1: Start from real content, not adjectives
Do not begin with a blank page and a list of aspirational words. Pull ten to fifteen pieces of the brand’s best existing content, the emails, posts, and pages that felt most right, and read for patterns in word choice, sentence length, and attitude. Why it matters: guidelines built from real writing describe a voice the brand can actually produce, not a fantasy version of it. Example: an invented studio, Fenwick Coffee, noticed its best posts were short, dryly funny, and never used exclamation marks, which became the backbone of its guide.
Step 2: Name three or four voice traits
Distil the patterns into three or four personality traits, and pressure-test each one. “Friendly” is too weak to guide anyone; “friendly like a knowledgeable neighbor, never like a salesperson” tells a writer what to do. Why it matters: a small set of sharp traits is easier to apply than a long list of vague ones. Example: Fenwick landed on warm, dry, and direct, then wrote one sentence under each explaining exactly what it meant for the brand.
Step 3: Set your vocabulary rules
List the words the brand prefers and the words it bans, with a short reason for each. Include how it refers to customers, its product, and itself. Why it matters: vocabulary is the most visible layer of a voice, so clear word rules prevent the fastest and most noticeable kind of drift. Example: Fenwick says “regulars,” never “users,” and bans “synergy,” “leverage,” and any word it would not say out loud to a customer.
Step 4: Document how tone shifts by context
Voice stays fixed, but tone flexes. Map the brand’s tone range across a few common situations, a launch, an apology, a support reply, so writers know how far they can move without leaving the voice. Why it matters: without this, writers either sound robotic in every context or invent their own tone. Example: Fenwick’s guide shows the same message written for a celebration and for a service outage, so the shift is visible, not theoretical.
Step 5: Show before-and-after examples
Examples teach a voice faster than any rule. For each trait and key rule, include a short off-brand version next to the on-brand rewrite. Why it matters: a writer who sees “not this, but this” internalizes the voice in seconds, where abstract guidance takes weeks. Example: Fenwick pairs a stiff, corporate sentence with its warm, direct rewrite, and that single comparison does more than a page of description. This is also where a brand voice guide template earns its keep, giving every example a consistent shape.
Step 6: Make it usable and keep it enforced
Format the document so a writer can find any rule in seconds, a one-page summary up front, details behind it. Then decide how you will actually enforce it, because a guide no one checks against becomes a guide no one follows. Why it matters: adoption, not authorship, is what makes guidelines work. Example: Fenwick keeps a one-page cheat sheet at the top and scores every draft against the full guide before it publishes, so the rules stay live instead of decorative.
Common mistakes to avoid
Most brand voice guidelines fail for the same few reasons. Watch for these:
- Writing them too long. A twenty-page document is a document no one reads. Keep it to two or three pages plus examples.
- Using vague adjectives with no rules. “Authentic” and “bold” mean nothing until you show what they look like in a sentence.
- Skipping the banned words. Telling writers what to do without telling them what to avoid leaves the most common drift unaddressed.
- Leaving out examples. Rules describe a voice; before-and-after examples teach it. Guidelines without examples rarely stick.
- Never enforcing them. If no one checks drafts against the guide, it stops shaping the work within a month.
How Claritar keeps your guidelines enforced
Writing the guidelines is step one; keeping them alive is the harder part. Claritar turns a brand voice guide into an active check by saving it once per client, then scoring any draft from 0 to 100 against those exact rules. It flags the banned words, the tone slips, and the off-brand lines, and returns an on-brand rewrite, so the guidelines shape every piece of content instead of sitting in a shared folder. You can see how the scoring works and watch a real draft get measured against a saved voice. Guidelines you enforce on every draft are the only kind that stay true.
Frequently asked questions
What should brand voice guidelines include?
Strong brand voice guidelines include three or four defined personality traits, clear preferred and banned word rules, a tone range mapped to common situations, and before-and-after examples. A one-page summary up front keeps the whole thing usable, and a plan for enforcement keeps it from going stale.
How long should brand voice guidelines be?
Keep them to two or three pages plus examples. Length is the main reason guidelines go unused, so a short, scannable document with a one-page summary beats a comprehensive one no writer opens twice. Detail can live behind the summary for the few who need it.
How do you document brand voice for a team?
Build it from real content, name a few sharp traits, set vocabulary rules, map how tone shifts by context, and show before-and-after examples. Then store it somewhere writers actually work and check drafts against it, so the guide stays a living tool rather than a one-time exercise.
What is the difference between a brand voice guide and a style guide?
A brand voice guide defines personality, tone, and word choice, how the brand sounds. A content style guide covers mechanics like formatting, grammar, and capitalization. They overlap and often live together, but voice is about character while style is about consistency of presentation.
Takeaway
Brand voice guidelines your team will use are short, built from real content, specific about words and tone, rich with examples, and enforced on every draft. The document is not the goal; consistent, on-brand content is, and the guide is only worth writing if it shapes the work.
Ready to put your guidelines to work? Save your brand voice and score a draft against it to see your guidelines enforced in seconds.
