If you have ever read a draft blog post, from a freelancer or an AI tool, and thought "that just isn't how we talk", the problem is usually not the writer. It is that nobody wrote down how you talk. Learning how to write in your brand voice, or getting anyone else to, starts with turning your instincts into something on paper.
The good news is that this takes about an hour, not a branding workshop. By the end of this article you should be able to produce a one-page voice brief you can hand to any writer or paste into any tool, and get drafts back that sound like you.
What brand voice actually is (and what it is not)
Brand voice is not a logo, a colour palette or a tagline. It is the set of habits in how your business communicates: how long your sentences run, which words you reach for, what you refuse to say, and how blunt you are willing to be about money.
Most small businesses already have a voice. It lives in the emails the owner sends to customers, the quotes that go out, the replies to reviews. The reason blog posts feel off is that they get written in a different register entirely: generic, breathless marketing English, full of "solutions" and "unlocking potential". Nobody at your business has ever spoken that way to a customer.
Your voice already exists. The job is not to invent it, it is to catch it in the wild and write it down.
How to write in your brand voice: a five-step method
Step 1: collect five samples of your own writing
Find five pieces of text that you, or whoever speaks for the business, actually wrote. Not your website copy, which a designer probably polished. Good sources are:
- An email explaining something to a customer
- A quote or proposal, especially the covering note
- A reply to a review, good or bad
- A message in which you turned work down or delivered bad news
- A text or WhatsApp thread with a long-standing client, if that is how you communicate
The bad-news sample matters most. How you say "no", "not yet" or "that will cost more" reveals more about your voice than anything written when everything is going well.
Rule of thumb: take samples from things you wrote to one real person, not to an imagined audience. That is where your natural voice lives.
Step 2: note sentence length and rhythm
Read your five samples aloud and pay attention to the shape of the sentences. Are they short and clipped, or do they wander? Do you use lists? Do you start sentences with "So" or "Look"? Do you write "we'll" or "we will"?
Write down two or three observations. Something like: "Mostly short sentences. One idea per sentence. Contractions everywhere. Occasionally a very short sentence for emphasis." That is enough. You are not producing a linguistics paper, just a fingerprint.
Step 3: list the words you use, and the words you would never use
Make two short lists. First, words and phrases that appear naturally in your samples. A plumber might say "sort it", "have a look" and "job". An accountant might say "file", "deadline" and "HMRC will want". These are the words your customers hear from you already.
Second, and more usefully, the banned list: words that appear in generic marketing copy but never in your actual writing. Common candidates are "solutions", "seamless", "passionate", "game-changing", "empower" and "leverage" used as a verb. If a word makes you wince when you imagine saying it across a counter, ban it.
Step 4: write down what you refuse to claim
Every honest business has claims it will not make. An IT support firm might refuse to promise "100% uptime". A tradesperson might refuse to call anything "guaranteed for life". An accountant will not promise a specific tax saving before seeing the books.
These refusals are a huge part of voice, because they define your credibility. A draft that oversells does not just sound wrong, it sounds like someone else's business. Write two or three sentences under a heading like "We never claim". Any writer or tool that respects that list will immediately sound more like you.
Step 5: note how you handle price
Money is where generic content gets vaguest and real businesses are most distinctive. Do you publish prices? Do you say "from £X"? Do you explain why something costs what it costs, or do you prefer "it depends, here is what it depends on"?
Write down your actual habit. If you always give a range and explain the variables, say so. If you never quote without a site visit, say that too, and say why. Content that handles price the way you do in person builds trust; content that dodges it sounds like it was written by someone who has never sent an invoice.
Turn it into a one-page voice brief
Now compress everything into a single page with five headings:
- Who is speaking: one sentence, for example "The owner of a small firm explaining things plainly to a customer over coffee."
- Sentence shape: your notes from step 2.
- Words we use / words we ban: both lists from step 3.
- We never claim: the refusals from step 4.
- How we talk about price: your habit from step 5, stated plainly.
Add one paragraph from your best sample at the bottom, labelled "This is what we sound like". A concrete example does more work than any amount of description.
That single page is now reusable. Hand it to a freelancer, paste it into an AI tool's instructions, or give it to a new employee. It works for all three because it describes behaviour, not vibes. "Friendly but professional" tells a writer nothing; "short sentences, no exclamation marks, never promise a completion date we have not confirmed" tells them everything.
Test the brief on a real draft
Take a recent draft that felt wrong and run it against your brief. Mark every banned word, every claim from the "never claim" list, every sentence that runs longer than anything in your samples. Usually the mismatch becomes obvious and fixable in minutes.
Then test the other direction: give the brief to your writer or tool and ask for a redraft. If the output still sounds generic, the brief is probably too vague in one section, most often the banned words list, which needs to be specific rather than "avoid jargon". With AI tools in particular, the quality of the underlying model matters as much as the instructions you give it; the model behind the tool largely determines whether it can actually follow a nuanced voice brief rather than reverting to marketing boilerplate.
One reassurance while you are testing: sounding like yourself and ranking in search are not in tension. Google's guidelines care about whether content is helpful, not who or what drafted it, a point covered in more detail in what Google actually says about AI-written content. A distinctive voice tends to help, because it is one of the few things a competitor cannot copy.
Key takeaway: a voice brief describes behaviour, not adjectives. "Short sentences, no exclamation marks, never promise a date we have not confirmed" beats "friendly but professional" every time.
Where Helio SEO fits in
Helio SEO scans your existing website and writing to build exactly this kind of voice profile automatically, then drafts articles that follow it, so the posts read like you wrote them rather than a tool. If you enjoy writing and have the time, the one-page brief above is all you need. If you would rather the blog just happened in your voice while you run the business, that is the part we handle.