Are Your Brand Voice Guidelines Too Vague or Too Complicated?

 

Brand voice guidelines fail in two opposite ways. Some are so vague that writers cannot use them to make real decisions. Others are so detailed that people stop checking them while they write. Useful guidance sits between those extremes: specific enough to guide wording and boundaries, but simple enough to apply during an ordinary draft.

Tone of voice is the way a brand expresses its personality through language. The document used to manage that tone should make language choices easier, not add another layer of uncertainty. If you need the broader foundation first, this guide explains what tone of voice means in marketing:

https://seolabsdp.blogspot.com/2026/04/what-is-tone-of-voice-in-marketing-with.html

Two Ways Brand Voice Guidelines Become Unusable

Vague guidelines usually rely on labels without explaining what they mean in practice. A document might tell writers to be “friendly”, “human”, “confident” or “expert”, but give no examples or boundaries.

That creates interpretation problems. One writer sees “friendly” and uses contractions and direct language. Another adds jokes and emojis. A third simply makes the copy less formal. All three may believe they followed the rule.

Complicated guidelines create the opposite problem. They may contain dozens of principles, overlapping exceptions and long lists of preferred phrases. The document looks thorough, but writers have to stop drafting to search for the right instruction.

Problem	What it looks like	What happens
Too vague	“Be friendly and professional”	Writers interpret the same words differently
Too complicated	Several pages of rules for each trait	Writers stop using the guide
Useful middle ground	Clear rule + example + boundary	Writers make faster, more consistent decisions

Warning Signs Your Guidelines Need Work

You probably have a vague-guideline problem if writers keep asking questions such as “How friendly is friendly?” or “Can we use humour here?” You may also see several versions of the same message that technically follow the document but sound noticeably different.

Other warning signs include:

• tone traits are mostly adjectives;
• examples are missing or generic;
• the guide does not explain what to avoid;
• editors repeatedly rewrite tone;
• different writers interpret the same trait differently.

Complicated guidance has different symptoms. Writers know the document exists but rarely open it. New team members need long explanations before they can use it. Similar rules appear in several sections, or people rely on one experienced editor to remember how everything fits together.

A long document is not automatically bad. The issue is whether a writer can find and apply the relevant instruction while working.

The Five-Question Test

Use these five questions to diagnose the problem.

1. Can a writer turn each rule into a language decision?
   “Be clear” is weak. “Use familiar words before specialist terminology” gives the writer an action.
2. Does the guide show the rule in practice?
   A short good/bad example often explains more than a paragraph of theory.
3. Does each rule include a boundary?
   If the brand is conversational, explain when informality becomes too casual.
4. Can a writer find the rule quickly?
   Routine questions should not require searching through several pages.
5. Do different writers interpret the rule similarly?
   If five people produce five incompatible versions, the instruction is not specific enough.

If several answers are “no”, the guide probably needs simplification or more precision.

How to Simplify Without Making It Vague

Start by removing duplication. If several rules describe the same behaviour, combine them into one stronger instruction. Then replace abstract labels with observable choices.

For example:

Too vague:
“Be friendly.”

Too complicated:
“Maintain an approachable, optimistic and conversational tone while avoiding excessive informality, slang, dismissive humour, overly colloquial sentence construction and unnecessary linguistic distance.”

More usable:
“Sound friendly by speaking directly to the reader, using natural contractions and choosing everyday words. Avoid slang, forced jokes and overexcited punctuation.”

The shorter version works because it tells the writer what to do and where to stop.

Next, group related instructions. Vocabulary rules should sit together. Sentence-style rules should sit together. Boundaries and “avoid” examples should appear beside the rule they qualify.

Finally, test the simplified guidance against real content. Give the same short task to two or three writers and compare the results. If they still make completely different tone decisions, the rule needs more precision. If everyone has to reread a page before writing one sentence, it still needs simplification.

For a wider review of tone consistency, warning signs and practical checks, use the full audit resource here:

https://seolabsdp.blogspot.com/2026/04/tone-of-voice-checklist-how-to-audit.html

A Practical Rule Should Reduce Decisions

The best brand voice guidance does not try to describe every possible sentence. It reduces the number of uncertain decisions a writer has to make.

A useful rule answers practical questions: What kind of words should I prefer? How direct should I be? What should I avoid? Where is the boundary? What does a good example look like?

If the document cannot answer those questions, it is probably too vague. If finding the answers takes too long, it is probably too complicated.

The goal is not the shortest guide or the most detailed one. The goal is guidance writers can actually use while drafting.

FAQ

How long should brand voice guidelines be?

There is no ideal page count. The useful test is whether writers can find and apply the important rules quickly. A short guide can still be vague, while a longer one can work if it is organised clearly.

Are adjectives such as “friendly” or “confident” useless?

No. They are useful as labels, but they should not be the entire instruction. Pair each trait with concrete language choices, examples and boundaries.

How do you know when the guidelines are practical enough?

Give the same writing task to several people. If they can work quickly and produce recognisably consistent results without constant clarification, the guidance is probably doing its job.