The business plan has a reputation problem. Ask a room of founders what they think about business plans and you'll hear two camps: the ones who swear by them and the ones who dismiss them as documents nobody reads. Both are responding to real experiences. A 40-page plan that took three months to write and was never updated after year one is largely useless. A tight, honest document that accurately reflects the business and gets revisited quarterly? That's one of the most useful management tools a founder can have.
The question "how do you write a business plan?" has a deceptively simple answer: you start with what you know, document what you've assumed, and find evidence for both. According to a Gartner survey, businesses that operate from a documented strategic plan are significantly more likely to hit growth targets than those that plan informally. The format is less important than the discipline of committing your assumptions to paper and holding yourself accountable to them.
What a Business Plan Actually Does
Before you write a single word, understand what the document is supposed to accomplish. A business plan serves two fundamentally different audiences — and the one you're writing for determines how you approach every section.
External Audiences
Banks, SBA lenders, investors, and grant committees. They're evaluating risk and return. They want evidence, not enthusiasm.
Internal Audiences
You, your co-founders, and your early team. They need clarity on direction, priorities, and how the business makes decisions under pressure.
Partners and Vendors
Key suppliers, advisors, or strategic partners who want to understand the scale and trajectory of the business before committing.
Future Hires
Senior hires — especially first employees — often ask to see the business plan before accepting an offer. It tells them whether the founder has thought through the opportunity or is winging it.
If you're writing for a bank or investor, you need a formal document with financial statements, sourced market data, and a clear funding request. If you're writing to clarify your own thinking and align your founding team, it can be shorter and more direct. Decide who's reading before you start writing.
How to Write a Business Plan Section by Section
Start with an outline, not a blank page
The fastest way to get unstuck is to stop looking at a blank document and start with a simple outline. Business plans have a standard structure because that structure reflects the questions every serious reader will ask. Build the skeleton first: executive summary, company description, market analysis, products and services, marketing and sales strategy, operations plan, management team, financials, and funding request (if applicable). You don't have to write the sections in this order — most experienced founders write the financials and market analysis first, then use those to inform the executive summary last.
Write one sentence that answers "what does this business do?"
Before you touch any other section, write one sentence that clearly answers this question. Not a mission statement, not a vision — a plain factual description. "We sell online courses teaching small business owners how to manage their books" is useful. "We empower entrepreneurs to achieve financial clarity through transformative educational experiences" is not. If you can't write a clear one-sentence description of your business, that's important diagnostic information: you need to keep simplifying the concept before you can write anything else credibly.
Do your market research before writing the market section
Don't sit down to write the market analysis section cold. Spend time before you open the document researching: who your target customers are, how many of them exist, what they currently spend to solve the problem you're solving, and what data sources can corroborate your estimates. Good sources include IBISWorld, Statista, industry association reports, U.S. Census Bureau data, and published research from firms like Forrester and Gartner. The goal is to be able to make a specific, sourced claim: "The U.S. market for small business accounting software is $X billion and growing at Y% annually, according to [source]." Unattributed assertions tell readers you didn't do the research.
Be honest about the competition
Every business plan needs a competitive analysis section. Write it before you write the product/service description, because your competitive analysis should shape how you describe your own offering. List your direct competitors by name. Note what they do well. Identify specifically where and why your approach wins against them — price, service model, specialization, geographic advantage, or integration with tools your customers already use. "We have no real competition" is never true and always reads as naivety. Lenders and investors have seen the market. If you claim it's uncontested, they'll assume you missed something.
Build your financial projections from the bottom up
This is where most first-time founders make the most consequential mistake. They start with a revenue target — "we want to hit $1 million in year two" — and work backward to justify it. Lenders and investors can spot this approach instantly, and it destroys credibility. Build from the bottom up instead: how many customers can you realistically acquire each month in year one, given your marketing budget, your sales capacity, and your conversion rates? What does each customer pay? What does each one cost you to acquire and serve? Build those unit economics out monthly for year one, then quarterly for years two and three. The result is a projection that's actually defensible.
Describe your operations with specific cost data
The operations section explains how the business runs. Include: where you operate (physical location, remote, hybrid), what equipment or technology you need, who you hire and when, and what your key vendor relationships are. Attach specific cost data to each line. If you're a service business that handles customer inquiries, budget for your support infrastructure — whether that's agent headcount, software, or AI-assisted tools. Businesses that budget for customer-facing operations explicitly, rather than lumping them into a generic "overhead" line, show lenders they've thought through how customers will actually experience the business at scale. Velaro, for example, offers predictable flat monthly pricing with no per-AI-resolution fees — the kind of cost model that makes operations budgeting clean and defensible.
Write the management section like you're making a case, not filling a form
The management section is the most underinvested section in most first-time founders' plans. They list job titles and previous employers. What lenders and investors actually want to know: why are these specific people, with these specific backgrounds, the right team to execute this specific plan? Write bios that connect past experience to the current opportunity. If you managed logistics for a distribution company before starting a supply chain software business, say so — and explain how that experience shapes your product decisions. If you have a gap in the team — no technical co-founder, no head of sales — acknowledge it and describe your plan to fill it.
Write the executive summary last
Position it first in the document — every reader will see it first — but write it last. The executive summary should be a distilled, two-page version of the entire plan: what the business does, who the customers are, what the market opportunity is, what your competitive position is, what the financial trajectory looks like, and what you're asking for if this is a financing document. You can't write a precise summary until you've completed the plan beneath it. When you do write it, use short sentences and specific numbers. This is not the place for aspiration — it's the place for precision.
The Sections Most First-Time Founders Skip
There are three sections that consistently get underdeveloped in first-time business plans. All three tend to be the ones readers spend the most time in.
The cash flow statement
Most founders produce an income statement projection — revenue, expenses, net profit — and call the financial section done. But the cash flow statement is what tells you whether the business actually survives. A profitable business on paper can still run out of cash if customers pay slowly and vendors expect payment immediately. Month-by-month cash flow projections for year one are more useful than annual projections, because they reveal the months where you'll be short. Know those months in advance. Plan for them. A reader who sees that you've modeled your cash position carefully trusts your other assumptions more.
The customer acquisition cost and lifetime value calculation
You need to know how much it costs you to acquire one customer (CAC) and how much revenue that customer generates over their relationship with you (LTV). These two numbers define whether the business is fundamentally viable. According to Forrester research, the most common failure mode in early-stage B2B businesses is a CAC that's too high relative to LTV — not because the product doesn't work, but because the customer acquisition approach wasn't modeled carefully before launch. Put this calculation in your plan. Show your assumptions. Let the reader stress-test them.
The risk section
Many founders avoid writing explicitly about the risks their business faces, fearing it will scare off lenders or investors. The opposite is true. A plan that pretends risks don't exist reads as unsophisticated. A plan that identifies the three to five most significant risks — market adoption risk, key personnel risk, regulatory risk, competitive risk — and describes how you'll monitor and mitigate each one reads as credible. Investors are paid to take risk. They want founders who understand the risks they're taking, not ones who haven't thought about them.
Budgeting the operations section? Velaro's flat monthly pricing gives your plan a defensible customer service cost line — no per-interaction fees to model around.
See How Velaro Is Priced →Common Mistakes That Undermine an Otherwise Good Plan
The content of a business plan matters. But so does how it's written. These mistakes show up in plans that are technically complete but still fail to persuade.
Using industry jargon instead of plain language. Write so that a smart reader with no industry knowledge can follow your logic. If you need to explain what a term means, explain it — or better, use plain language that doesn't require explanation. The clearest business plans tend to come from founders who've had to explain their business to someone outside their industry and actually made themselves understood.
Making round-number projections. "$1 million in year one" or "10% market share in year three" are red flags because no real financial model produces those numbers. Real bottom-up projections produce numbers like $847,000 or 8.3%. Specificity signals rigor. Round numbers signal guessing.
Describing your product without describing the customer's problem. Readers need to understand the problem before they can evaluate the solution. Lead with the pain: what specific frustration, inefficiency, or cost does your customer have right now that your product removes? Then describe the product. In that order.
Padding sections with generic industry background. Every section of a business plan should contain information that's specific to your business. Generic paragraphs about how "the customer service software market is large and growing" or "ecommerce is the future of retail" are filler. Cut them. Replace them with specifics about your customers, your segment, and your position.
Treating the plan as a one-time document. According to research published in the Journal of Management Studies, the act of planning is more valuable than the plan itself — but only if the plan is actually used as a management tool. A plan written in January that's never revisited is not a planning discipline; it's a financing artifact. Set a quarterly cadence: review the plan against actual performance, update assumptions that proved wrong, and note the reasons why.
When the Plan Is Done — What to Do With It
A completed business plan should do three things. First, if you're seeking financing, it becomes your primary submission document — to the bank, the SBA lender, or the investor. Second, it should sit in a shared folder that your leadership team can access and reference when making decisions. When a question arises about whether a new initiative aligns with the strategy, the plan is the reference point. Third, and most importantly, it should become the basis for a regular review process.
The founders who get the most value out of business planning are not the ones who wrote the best first draft. They're the ones who wrote something honest, held themselves accountable to it, and updated it when reality diverged from their assumptions. That discipline is harder than writing the plan. It's also what actually builds a successful business.
The Bottom Line
Writing a business plan from scratch means starting with a structure that reflects what every serious reader needs to know, gathering real data to support your assumptions, building financial projections from unit economics up rather than revenue targets down, and being honest about what you don't know yet. The plan is only as good as your willingness to update it when the business proves you wrong. Start with the sections where you have the most evidence — usually the product description and the market analysis — and let the executive summary be the last thing you write, once you know exactly what it should say.
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Start Free Trial →Frequently Asked Questions
Do you need to write a business plan before starting a business?
You don't legally need a business plan to start a business, but you do need one to access most forms of outside financing — bank loans, SBA loans, most investor funding. Beyond financing, the act of writing a plan forces you to make explicit the assumptions underlying your business. Many founders discover gaps in their thinking during the planning process that are far less expensive to discover before launch than after. You don't need a 40-page document; a tight 10 to 15-page plan that honestly covers the key sections is sufficient for most purposes.
What's the difference between a business plan and a pitch deck?
A pitch deck is a visual presentation — typically 10 to 15 slides — used in investor meetings to tell the story of the business quickly. A business plan is a text document designed for in-depth review, often alongside a pitch deck. Many investors will ask to see the business plan after seeing the pitch deck. They serve different moments in the same conversation: the pitch deck gets the meeting, the business plan closes the deal.
How long should a business plan be for a small business?
A small business plan for bank financing typically runs 15 to 20 pages, excluding appendices. An internal plan used for strategic alignment can be shorter — 8 to 12 pages — if it covers all the core sections. Length is not a proxy for quality. A plan that's 25 pages of vague assertions is less useful than a 12-page plan with specific data, clear assumptions, and honest financial projections.
What financial documents should a business plan include?
A complete business plan for financing purposes should include three financial documents: an income statement (or profit and loss statement) showing revenue, costs, and net income; a cash flow statement showing when money comes in and goes out month by month; and a balance sheet showing assets, liabilities, and equity. For existing businesses, include two to three years of historical statements. For startups, include three-year projections built from unit economics, not from revenue targets.
What if I don't know how to write a financial projection?
Start with what you do know: your pricing, your estimated cost per unit or per customer, and your realistic customer acquisition rate based on your marketing budget and conversion assumptions. Build a simple month-by-month spreadsheet for year one using those numbers. Many SCORE chapters (a free SBA resource) offer free one-on-one mentoring specifically on financial projections. For any financing application, having an accountant review your projections before submission is worth the cost — a lender who can't follow your financial model will reject the application before reading the rest of the plan.