The owners who get real hours back from ChatGPT are not better at “prompt engineering”. They have done one thing the others have not: they gave it context once, saved it, and then asked for specific, bounded work in the shape they needed. Everything else is habit. This guide to ChatGPT for small business is the context, the pattern, and 30 prompts I have watched survive in real businesses long after the novelty wore off — the ones that are still being used at month six.
It is the hands-on companion to what to automate first. Prompts are for the work a person still does; automation is for the work nobody should.
Step 1: The business brief (do this once)
One page, saved as a project, a custom instruction or a pinned document, and referenced by every prompt:
Business: Northside Plumbing, Salford. Family firm, 6 engineers, since 2009. Services: boiler installs and repairs, servicing, bathrooms, emergency call-outs. Areas: Salford, Eccles, Swinton, Worsley.
Customers: homeowners 35–70 and landlords; they value reliability, tidy work and straight prices.
Tone: plain, friendly, confident, no jargon, no exclamation marks, British English. We say “we” and sign as Dave.
Proof: 240 Google reviews at 4.9; Gas Safe registered; 12-month guarantee.
Prices: service £85; call-out £70 first hour; boiler installs from £1,900.
Rules: never invent prices, reviews, or availability. Never promise same-day unless I say so. Ask me for anything you are missing rather than guessing.
Replace with your own. This is the single biggest quality lever there is, and almost nobody does it.
Step 2: The four-part prompt
Every good prompt has: who you are asking it to be (“you are our office manager”), the task with specifics (what, for whom, length), the format (email, table, bullet list, 120 words), and the constraints (tone, what to avoid, “ask if unsure”). The prompts below follow that shape. Fill the [brackets].
Customer communication
- Reply to an enquiry: “Using the business brief, write a reply to this enquiry: [paste]. Answer their question, confirm we cover their area, give the next step (a call or a booking link), 80–120 words, sign as Dave.”
- Turn a rough note into a customer email: “Here are my rough notes after the visit: [notes]. Write the follow-up email to the customer: what we found, what we recommend, the price, what happens next. Plain and reassuring.”
- Handle a complaint: “A customer wrote this complaint: [paste]. Draft a reply that acknowledges the specific problem, does not argue, explains what we will do and by when, and offers a call. No corporate language.”
- Explain a technical thing simply: “Explain to a homeowner in three sentences why [a leaking pressure relief valve] happens and what the fix involves. No jargon.”
- Chase a quote politely: “Write a short, friendly follow-up to a customer who received our quote for [job] five days ago and has not replied. One question, one line about availability, no pressure.”
- Review reply: “Write a reply to this Google review: [paste]. If positive, thank them and mention one specific detail. If negative, apologise for their experience, state one concrete step, and invite them to call me directly. Under 60 words.”
Sales and quotes
- Quote from bullet points: “Turn these notes into a clear quote email: [scope, materials, labour, price, timeline, exclusions]. Structure: summary, what is included, what is not, price, timing, next step.”
- Options table: “Present these three options as a table a customer can compare in a minute: [option details]. Columns: option, what you get, price, best for.”
- Objection answers: “List the six most common objections a customer has before booking [a boiler replacement] and write a one-paragraph honest answer to each, in our tone.”
- Proposal for a bigger job: “Using the brief and these notes [paste], write a two-page proposal: their situation, our recommendation, scope, price, timeline, guarantee, next step. Headings and short paragraphs.”
- Qualify a lead: “Here is what a lead told us: [paste]. Score it hot, warm or cold using: is it a service we do, in our area, needed within a month, budget realistic. Explain in two lines and suggest the reply.”
Marketing
- Month of social posts: “Create 12 social posts for the next month, four types rotating: a job we did (I will add the photo), a tip, behind the scenes, an offer. Each under 60 words, our tone, local references. Table with post type, text, suggested photo.”
- Google Business Profile post: “Write a 60-word Google Business Profile update about [seasonal service] with one call to action to book.”
- Service page copy: “Write the copy for our [boiler servicing] page: headline, 2-sentence intro, what is included (bullets), price, why us (3 proof points from the brief), FAQ (5 questions), call to action. Under 500 words.”
- Ad variations: “Write five first lines for a local Facebook ad for [service] in [area], each under 15 words, each with a different angle: price, speed, proof, problem, season.” (Pair with the local ads setup.)
- Email newsletter: “Write this month’s customer email: one useful tip about [topic], one recent job in two lines, one offer with a link. 200 words, from Dave.”
- Blog post outline: “Outline a 1,200-word article answering ‘[question customers ask]’ for homeowners: H2 headings, the key point under each, and a FAQ of four questions. I will write it from the outline.”
- Repurpose: “Turn this blog post into: three social posts, one email paragraph, and a 30-second video script. Keep the facts exact.” [paste]
Operations and admin
- Meeting or call notes: “Here is the transcript/notes: [paste]. Give me: decisions, actions with owners and dates, open questions. Bullet points only.”
- Process document: “Turn this description of how we [handle an emergency call-out] into a step-by-step checklist a new starter could follow, with what to say to the customer at each step.”
- Job description: “Write a job ad for a [plumbing engineer] in Salford: what the job is really like, requirements, pay range [x], benefits, how to apply. Honest, no clichés, 300 words.”
- Policy in plain English: “Draft a cancellation and no-show policy for [appointment type]: 24-hour notice, [fee], exceptions. Fair, clear, two paragraphs, and a one-line version for the booking confirmation.”
- Spreadsheet help: “In Google Sheets, I have columns Date, Customer, Job, Amount, Paid (Y/N). Give me the formula for total unpaid this month, and one for average job value by month.”
- Supplier or partner email: “Write an email to our [supplier] asking for [better terms on X] — reference our volume [numbers], propose [specific ask], keep it warm and short.”
Finance and planning
- Price check: “Here are my costs for [job]: [materials, hours, rate, overhead %]. Show the price at 20%, 30% and 40% margin, and what each means per job in profit.”
- Cash-flow view: “Given these monthly figures [paste], list the three months that look tight, why, and two practical levers for each.”
- Quarter plan: “Based on the brief and these goals [paste], propose a 90-day plan with one priority per month, the weekly actions, and how we will know it worked. Realistic for a six-person firm.”
Hiring and team
- Interview questions: “Give me eight interview questions for a [role] that reveal reliability, customer manner and problem-solving, with what a strong answer sounds like.”
- Onboarding week: “Draft a first-week plan for a new [role]: day by day, what they learn, who they shadow, what they should be able to do by Friday.”
- Difficult conversation: “Help me prepare for a conversation with an engineer about repeated lateness: an opening line, three points, what to ask, and how to close with a clear agreement. Respectful and direct.”
The rules that keep it useful
- Facts are yours. Prices, availability, guarantees, reviews — check every one before it leaves the building. Add “do not invent” to the brief and it still needs checking.
- Privacy: business plan with no-training terms; no customer personal data in prompts; describe, do not paste.
- Your voice: read drafts aloud; edit the two sentences that do not sound like you. That is usually enough.
- One place: a project or workspace per business with the brief inside, so nobody re-explains the company every morning.
- Know the hand-off: when the same prompt runs every day — enquiry replies, review responses, missed-call texts — it belongs in automation, not a chat window. A trained chatbot or an AI support layer does those without anyone typing.
The honest measure: after a month, count the prompts you still use. Most owners keep six to ten. Those are worth a saved template each — and they are usually the ones on this page under customer communication and quotes, because that is where the hours were.
Further reading: ChatGPT · Claude · Gemini.
FAQ
Is ChatGPT safe to use with customer information?
Use a business or team plan whose terms exclude your data from training, and even then keep names, contact details and anything sensitive out of prompts — describe the situation instead. Never paste a customer list, contract or medical detail into a free consumer account.
Which is better for a small business, ChatGPT, Claude or Gemini?
All three handle the prompts on this page well. Pick the one your team will actually open every day — Gemini if you live in Google Workspace, ChatGPT or Claude otherwise — pay for it, and give it a saved business brief. The habit matters more than the model.
Can ChatGPT replace a copywriter or a marketing agency?
It replaces the blank page and the first draft, not the judgement. Drafts still need your facts, your voice and a human check before a customer sees them. For strategy, positioning and campaigns, an experienced person with these tools is faster and better than either alone.
What is the most useful thing to do first?
Write the business brief — one page about your business, customers, services, tone and rules — and save it as a project or custom instruction. Every prompt afterwards gets dramatically better, because the assistant finally knows who it is writing for.
Want the repetitive prompts turned into automations — enquiry replies, review responses, follow-ups — so nobody has to type them at all? See the AI automation services; the business brief you write for ChatGPT is the same one that trains the bot.