Most people put off writing a business plan because they picture a 40-page document full of spreadsheets and buzzwords. Here’s the thing: unless you’re asking a bank or investor for money, it doesn’t need to be anything like that. A good plan is simply your thinking, written down clearly enough that you (and anyone else) can check whether it holds up.
This guide shows you how to write a business plan step by step, whether you need a quick one-pager to get your head straight or a full plan for a loan application. It’s written with small businesses in the US, UK and Canada in mind, but the structure works anywhere.
First, decide which kind of plan you need
The US Small Business Administration (SBA) splits business plans into two broad types, and it’s a useful way to think about it:
- A lean plan is short and high-level. Think one page, or a handful of bullet points under each heading. It’s perfect if you’re testing an idea, starting small or just want clarity.
- A traditional plan is longer and more detailed. Lenders and investors usually expect this one, because they want to see the numbers and the reasoning behind them.
If you’re not sure, start lean. You can always expand it later, and a short plan you actually finish beats a long one you abandon at page six.
How to write a business plan: the 9 sections
A traditional plan usually covers the sections below. For a lean plan, write a few lines for each and move on.
1. Executive summary
A one-page snapshot: what the business does, who it’s for, why it will work and, if you’re raising money, how much you need. It goes first in the document, but write it last. It’s much easier once everything else is figured out.
2. Company description
What problem do you solve, and for whom? Explain what makes you different from the alternatives. “We’re cheaper” is weak. “We’re the only mobile bike repair service in north Calgary that comes to your office” is strong.
3. Market analysis
Who are your customers, how many of them are there, and how do they buy today? Look at your competitors honestly: what do they do well, and where do customers complain about them? Reading their reviews is one of the fastest, cheapest pieces of market research you can do.
4. Organization and management
Who runs the business and what experience do they bring? Mention your legal structure too (for example, an LLC in the US, a limited company in the UK or a corporation in Canada). If it’s just you, say so and explain why you’re the right person to pull it off.
5. Products or services
Describe what you sell, how you price it and why customers will choose it. Include how it’s made or delivered, and anything you’re planning to add later.
6. Marketing and sales
How will people find out about you, and how will you turn that attention into sales? Be specific. “Social media” isn’t a plan. “Two Instagram posts a week, a Google Business Profile with weekly updates, and a referral discount for existing customers” is. If you serve local customers, our step-by-step guide to setting up a Google Business Profile is a good place to start, and our guide to marketing funnel optimization covers the bigger picture.
7. Funding request
Only needed if you’re asking for money. State how much you need, what you’ll spend it on and over what period. Lenders want to see that you’ve thought about this in detail, not that you’ve picked a round number.
8. Financial projections
This is the section people dread, but it’s really three questions: How much will you sell? What will it cost you? When will you run out of cash, or start making it? Keep your assumptions realistic and write them down, so you (or a lender) can see where the numbers came from. If you already trade, include your past figures too.
9. Appendix
Supporting documents: licenses, permits, resumes, letters of reference, product photos, detailed spreadsheets. Only include what genuinely backs up the plan.
Tips that make a business plan actually useful
- Write for a skeptical reader. Imagine a friend who wants to find the holes in your idea. Answer their questions before they ask.
- Use real numbers wherever you can. Quotes from suppliers, actual rent, real prices from competitors. Guesses are fine when you have nothing else, but label them as guesses.
- Keep it short. Many small business plans land somewhere between a few pages and twenty. Longer doesn’t mean better.
- Get feedback. In the US, SBA resource partners like SCORE offer free mentoring. In the UK and Canada, government-backed small business services and local enterprise agencies offer similar help.
- Treat it as a living document. Review it every few months. Your plan should change as you learn what customers really want.
Can AI help you write a business plan?
It can speed things up a lot. AI tools are good at turning rough notes into clear paragraphs, suggesting questions you’ve missed and tidying up the structure. Where they fall down is the numbers and the market facts; they’ll happily invent both. Use them to draft, then check every figure yourself. Our guide to AI tools for small business shows how to get good results without the risks.
And when it’s time to turn the plan into tasks and deadlines, a simple project tool helps. We compared free vs paid project management software if you’re deciding which way to go.
Quick answers
How long should a business plan be?
A lean plan can fit on one page. A traditional plan for a lender is usually longer, but clarity matters more than length.
Do I need a business plan if I’m not raising money?
You don’t need one, but writing even a lean plan forces you to think through pricing, customers and cash flow before they become expensive problems.
Is there a free business plan template?
Yes. The SBA offers free guidance and examples, and the nine sections above work as a ready-made outline. Copy the headings into a document and fill them in.
The bottom line
Learning how to write a business plan is less about fancy formatting and more about honest thinking. Start lean, use real numbers, write the executive summary last and keep the document alive as your business grows.
For the official US guidance, see the SBA’s page on how to write your business plan.
