How to Write a Business Plan (And Actually Use It)

A business plan is just a written answer to three questions: what does your business do, who's it for, and how does it make money. That's it. Investors and banks will want to see one, but honestly, the person who benefits most from writing it is usually you.

Here's the thing most people get wrong: they treat it like homework. They download a template, fill in the boxes, and file it away without really thinking it through. Then six months later they can't remember why they made half the decisions they made.

We'd rather you skip the template-filling and actually sit with the questions. It takes longer, but a plan you've thought through is worth more than one you've typed out.

Key Takeaways

• A business plan sets out what your business does, who it serves, and how it plans to make money.
• You need one for funding applications, but it's also useful for your own clarity, even as a solo founder.
• The core sections are: executive summary, market analysis, products/services, marketing strategy, financial projections, budget, and risk assessment.
• It should be specific to your business, not a generic template filled in on autopilot.
• A business plan isn't a one-off task. Revisit and update it as your business changes.

What Is a Business Plan?

A business plan is a written document that sets out your business goals and how you intend to reach them. It usually covers your market, your finances, and your strategy for growth.

You might write one for a bank or investor when you're asking for funding. Or you might write one just for yourself and your co-founders, as a working reference for decisions down the line. Either way, a solid plan usually includes:

• Executive summary
• Market analysis
• Products and/or services
• Marketing strategy
• Risk assessment
• Financial projections
• Budget
• Appendices

The best plans are specific to the business they're written for. Filling in a generic template might tick a box, but it won't give you (or a lender) much confidence. Take the time to actually think through each section for your business.

How to Write a Business Plan, Section by Section

Before you write anything, gather your information first. Then draft a few bullet points for each section below. That way you know what you're covering before you start writing full paragraphs.

Executive Summary: What Goes in It

Your executive summary is the elevator pitch. It comes first in the document, but it's usually easier to write it last, once you know what the rest of the plan says.

Cover the basics: what your business does, your mission, your products or services, your market, and what sets you apart from competitors. It's also worth mentioning your business structure here. A limited company can look more credible to lenders and investors than a sole trader setup, though the right structure depends on your own situation. If you're still weighing this up, our guide to sole trader vs limited company breaks down the difference.

Market Analysis: Know Your Competitors and Customers

This section covers two things: the market you're entering, and the customers you're trying to reach.

For the market itself, look at who your main competitors are, roughly how much of the market they hold, and where their strengths and weaknesses lie. Note any trends that might affect your business over the next year or two.

For your customers, think about who they actually are: age, location, income, buying habits, and what makes them choose one product over another. Building out a simple customer profile can help you get specific instead of writing vaguely about "young professionals" or "small businesses."

Doing this properly helps you spot gaps in the market and shapes how you market your business later.

Products and Services: Explaining What You Sell

Describe what you're selling and why someone would buy it from you rather than a competitor. Be specific about the features, the benefits, and the problem it solves.

If you hold any patents, trademarks, or copyrights, list them here. If you've got products or services planned for later, a brief mention of what's coming next can strengthen this section too.

Marketing Strategy: How You'll Reach Customers

This is where you explain how you'll actually get customers, based on what you learned in your market analysis.

Cover where you'll market (social media, email, in person), how you'll promote your business, and what your brand personality is. Keep it grounded in what you know about your audience rather than listing every channel available.

Financial Projections: Forecasting Income and Cash Flow

This is the section people either skip or overdo. Neither works. Financial projections just mean laying out what you expect to earn, spend, and have left over, month by month or year by year, so anyone reading (including future you) can see where the money's going.

If you're already trading, put your real numbers in alongside the projections. A lender wants to see the trend, not just the ambition. And be honest with your break-even point. We've read plans where the founder clearly wanted the numbers to work out a certain way, and it shows. Round numbers that all land suspiciously on target don't build confidence, they do the opposite.

If you're chasing funding, spell out exactly how much you need and what it's going toward. Vague numbers get vague answers from banks. Even if funding isn't on the table right now, doing this properly forces you to notice problems early, while they're still cheap to fix. If you're planning to take this plan into a room with investors or a bank, our pitching checklist covers what to get right before you walk in.

Budget: Setting Out Your Costs

Set out your current costs, covering everything from production to marketing to staffing. This gives you (and any reader) a clear view of where the money goes.

Risk Assessment: Planning for What Could Go Wrong

Every business has risks. Use this section to name the main ones honestly, and briefly explain your plan if they happen.

This isn't about listing worst-case scenarios for the sake of it. It's about showing you've thought ahead, which matters to lenders and to you.

Appendices: Backing Up Your Plan with Evidence

Use the appendix for supporting documents: research, data, prototypes, samples, anything that backs up what you've said elsewhere in the plan. You can also refer back to this section later if you need to justify a decision you made early on.

Should Every Business Plan Follow the Same Template?

The list above covers the core sections, but your plan doesn't need to look exactly like everyone else's. A product-based business might want a heavier appendix with samples or prototypes. A service business might spend more time on the marketing strategy section.

Your plan is meant to reflect your business, not a template.

What to Do Once Your Plan Is Written

Writing the plan is the first step, not the last one. A business plan isn't static. Revisit it as your business grows, as your market shifts, or as your goals change.

Treat it as a working document you check in on every few months, not something you write once and file away.

Once your plan is in decent shape, you might be thinking about tax and registration next. Our guide to Self Assessment basics is a good place to start if you're not sure what applies to you.

If you're ready to register your business, you can compare our company formation packages or head to our homepage to see everything we offer.

FAQs

Do I need a business plan if I'm not applying for funding?

Not legally, no. But it's still useful. It forces you to think through your market, your numbers, and your risks before you commit time and money.

How long should a business plan be?

There's no fixed length. A short plan covering the core sections clearly is more useful than a long one padded with filler.

Should I use an online business plan template?

You can use one as a starting structure, but don't just fill in the blanks. Write each section based on your actual business and market.

What's the difference between a business plan and a business model?

A business model explains how your business makes money. A business plan is the fuller document: your model, your market, your finances, and your strategy, all in one place.

Does my business structure belong in the plan?

Yes, briefly, usually in the executive summary. It's worth mentioning whether you're a sole trader or a limited company, since this can affect how lenders and investors view your business.

How often should I update my business plan?

Whenever something material changes: your market, your finances, your goals, or your offering. Many people review it every few months as a matter of habit.

This article is for general information only and does not constitute legal, financial, or business advice. Rules, funding requirements, and market conditions vary, so it's worth checking current guidance or speaking to a qualified professional before making business decisions.