Writing a business plan is one of those tasks that most small business owners know they should do but keep putting off. It feels overwhelming, time-consuming, and unclear where to start. AI tools have changed that significantly — here’s how to use them to produce a solid business plan quickly, whether you need it for a bank loan, an investor, or simply to get your own thinking straight.
Why you still need a business plan in 2026
Before diving into the how, it’s worth addressing the why. In an era of fast-moving businesses and agile working, do you actually need a formal business plan?
The honest answer is: it depends on what you’re trying to do.
You definitely need one if you’re:
- Applying for a business loan from a UK bank
- Seeking investment from angels or venture capital
- Applying for a government grant or Start Up Loan
- Bringing on a business partner
- Buying an existing business
You probably still benefit from one if you’re:
- Starting a new business and want to think it through properly
- Planning a significant expansion or new direction
- Trying to set clear goals and financial targets
AI makes the process fast enough that there’s little reason not to do it regardless.
What makes a good UK business plan?
A solid business plan for a UK small business typically covers:
- Executive summary
- Business description and overview
- Market research and target customers
- Products or services
- Marketing and sales strategy
- Operations plan
- Management team
- Financial projections — including profit and loss forecast, cash flow forecast, and balance sheet
- Funding requirements if applicable
The financial projections section is the one most people struggle with most — and where AI is least able to help directly, since it requires your actual numbers. Everything else, AI can assist with significantly.
Step 1: Use ChatGPT to create your structure
Start by giving ChatGPT the basic information about your business and asking it to create a business plan outline. Be as specific as possible.
Example prompt:
“I’m starting a mobile dog grooming business in Yorkshire, UK. I’ll be operating as a sole trader, offering mobile grooming services to dog owners within a 15-mile radius. My target customers are working professionals aged 30-55 who own dogs and value convenience. I plan to charge £45-65 per appointment depending on dog size. Please create a detailed business plan outline covering all the standard sections a UK bank would expect to see.”
ChatGPT will produce a structured outline you can then work through section by section.
Step 2: Research your market with AI assistance
The market research section is where many business plans fall down — either it’s missing entirely or it’s vague and unconvincing.
Use ChatGPT to help you think through:
- Who your target customers are and what they care about
- Who your competitors are and what they offer
- What gap in the market your business fills
- What the size of your potential market is
Example prompt:
“Help me write the market research section of a business plan for a mobile dog grooming service in Yorkshire. Include information about the UK pet care market, key trends, target customer profile, and competitive landscape. I’ll be competing against static grooming salons and other mobile groomers.”
Always verify specific statistics and market size figures from authoritative sources — ChatGPT can make mistakes with precise numbers.
Step 3: Write each section with AI assistance
Work through each section of your plan with ChatGPT as a writing partner. Give it context about your business and ask it to draft each section, then edit and personalise the output.
For the executive summary:
“Write an executive summary for my mobile dog grooming business plan. The business is called [name], operating in Yorkshire as a sole trader. I’m seeking a £5,000 Start Up Loan to purchase a grooming van and equipment. I expect to reach profitability within six months based on 4-5 appointments per day at an average of £50 per appointment.”
For the marketing strategy:
“Write a marketing and sales strategy section for my mobile dog grooming business. My marketing channels will include Google Business Profile, local Facebook groups, leaflet drops, and referral incentives for existing customers. I have a budget of £200/month for marketing in the first six months.”
Step 4: Handle the financial projections yourself
This is the one section AI can’t do for you — and it’s the most important section for any bank or investor. You need to produce:
Revenue forecast: How many customers per week/month, at what price, growing how quickly?
Cost forecast: What are your fixed costs (insurance, phone, fuel, equipment, marketing) and variable costs?
Profit and loss forecast: Revenue minus costs, month by month for 12-24 months.
Cash flow forecast: When money comes in and goes out — crucial for showing a bank you won’t run out of cash.
Use a simple spreadsheet for this. The British Business Bank and many UK banks provide free cash flow forecast templates on their websites — search “British Business Bank business plan template” for a reliable starting point.
ChatGPT can help you think through what costs to include and sense-check your assumptions, even if it can’t produce the actual numbers.
Step 5: Use AI to review and improve your draft
Once you have a complete draft, paste sections back into ChatGPT and ask it to review them:
“Review this section of my business plan and suggest improvements. Make it more compelling and professional, and flag any gaps a bank manager might question.”
This editing pass often catches vague statements, missing information, and areas where your argument could be stronger.
Useful AI tools for business planning
ChatGPT — best all-round tool for drafting and editing each section. Free version is adequate, Plus gives faster responses for longer documents.
Notion AI — if you’re building your plan in Notion, the AI layer can help you draft sections, summarise research, and keep everything organised in one place.
Microsoft Copilot — if you’re writing your plan in Word, Copilot can assist with drafting and editing directly in the document.
LivePlan — a dedicated business planning tool with AI assistance, financial projection templates, and industry benchmark data. From around $15/month. Worth considering if you need to produce a very polished plan for investors.
Tips for a business plan that actually works
Be realistic with your numbers. Banks and investors have seen thousands of business plans. Overly optimistic projections are spotted immediately and damage credibility. Build in a conservative scenario alongside your base case.
Show you understand your customers. The strongest business plans demonstrate a deep understanding of who the customer is, what problem they have, and why your solution is better than the alternatives.
Address the risks. Include a section on the main risks to your business and how you plan to manage them. This shows maturity and builds trust with lenders and investors.
Keep it concise. A UK bank loan application typically needs 10-20 pages. Investors often want even less. Longer is not better — clear and concise is.
Get it reviewed. Before submitting to a bank or investor, ask your accountant to review it — particularly the financial projections. Many UK accountants offer this as a standalone service.
Free resources for UK business planning
- British Business Bank — free business plan templates and guides at british-business-bank.co.uk
- Start Up Loans — free mentoring and business plan support for loan applicants at startuploans.co.uk
- Business Gateway Scotland / Business Wales / Invest NI — free business plan support depending on your region
- Your local Growth Hub — free business support including plan review, available across England
Final thoughts
Writing a business plan no longer needs to take weeks. With AI tools handling the drafting and structure, a capable sole trader or small business owner can produce a solid first draft in a day — then spend another day refining it with their own knowledge and numbers.
The AI writes the words. You provide the insight, the numbers, and the conviction. That combination produces a business plan that’s both well-written and credible.
Start with ChatGPT, work through each section methodically, and don’t skip the financial projections — that’s the part that matters most to anyone lending or investing money.