How to Write the Market Analysis Section of a Business Plan

Most business plans get hand-wavy in exactly one place: the market analysis. "It's a $50 billion market, we just need to capture 1%." That single sentence tells a reader nothing except that the founder hasn't done the math. A real market analysis does the opposite. It shows you know exactly who buys, why they buy, and how big that group actually is, with numbers you can defend line by line.

That distinction matters more than most founders realize. A market analysis isn't a formality you fill in before the financial projections. It's the section where a lender, an investor, or you (six months from now, wondering why growth stalled) can check whether the business rests on a real opportunity or a guess dressed up as one.

What the market analysis section is actually for

The market analysis section of a business plan exists to answer three questions in sequence: does this market exist, who specifically is in it, and how big is the slice you can realistically reach. The SBA's guidance on market research and competitive analysis frames this the same way: understand the industry, the competition, and the customer base before you write a word of strategy. Skip any one of those and the rest of the plan (your revenue model, your hiring plan, your funding ask) is standing on sand.

A reader can forgive a rough logo or an imperfect pitch deck slide. They rarely forgive a market analysis that leans entirely on an industry-report headline number with no explanation of how you get from that number to your first paying customer.

If you haven't done the underlying research yet, this section is not the place to start collecting it. Go run the research first (customer conversations, forum reading, competitor digging), then come back and write this section from what you found. For a refresher on the research methods themselves, see market research for a startup and market research methods bootstrapped founders actually use. This article is about structuring what you've already learned into the six parts a market analysis needs.

The 6 parts of a strong market analysis

1. Industry overview and trends

Start one level above your specific business: the industry you're operating inside of. Describe its current size, its growth rate, and the two or three trends actively reshaping it. If you sell point-of-sale software to coffee shops, your industry is food service technology, not "coffee." Readers want to know if the tide is rising or falling under your specific boat.

Cite real, current data here, and note the year. A stat from a five-year-old report reads as either lazy or outdated. If you can't find recent numbers for a narrow niche, use the closest adjacent category and say so explicitly rather than presenting a stretch as an exact fit.

2. Target market segments

This is where founders default to "everyone" and lose the reader immediately. A market analysis needs actual segments: groups of customers who share a problem, a budget, and a buying process. A 34-year-old solo bookkeeper buying software for herself behaves nothing like an office manager buying the same software for a 12-person accounting firm, even though both might technically fit "small business owners."

Name two or three segments. For each one, note the defining trait (company size, life stage, behavior, budget) and roughly how many of them exist. If your own market research surfaced a segment that keeps showing up in conversations, that's the one to lead with here, not the broadest one you can imagine.

3. Market size: TAM, SAM, and SOM done honestly

This is the part that separates a credible plan from a hopeful one. TAM, SAM, and SOM are three numbers, nested inside each other:

• TAM (Total Addressable Market): the total revenue opportunity if you captured 100% of the market, with zero competition. It sets the ceiling.
• SAM (Serviceable Addressable Market): the slice of TAM that your specific product, geography, and business model can actually serve.
• SOM (Serviceable Obtainable Market): the realistic share of SAM you can capture in the near term, given competition, sales capacity, and how fast you can actually reach customers.

Build these numbers from the bottom up, not the top down. Top-down means starting with a giant industry report figure and guessing you'll grab "just 1%" of it, which skips the actual math of who buys, at what price, and how many of them there are. Bottom-up means starting with your own pricing and customer count and multiplying upward: number of potential customers times your average revenue per customer. It's slower to build, but every number in it is one you can explain and defend.

4. Customer profile

Beyond the segment-level data, describe the person (or the buying committee) who says yes. What does their day look like before they find you? What have they already tried that didn't work? What's the moment that makes them go looking for a solution? A concrete customer profile does double duty: it makes your market analysis specific, and it becomes the foundation for your marketing and sales section later in the plan.

5. Competitive landscape

List your direct competitors (companies selling something very similar) and your indirect ones (the workaround your customer uses today: a spreadsheet, a manual process, a cheaper but weaker tool). For each, note one real strength and one real gap. The gap is where your positioning lives. If you can't articulate a gap in an existing competitor, that's worth sitting with before you write another word of the plan.

6. Barriers to entry and regulation

Close with what protects the business once it's built, and what could slow it down getting there. Barriers to entry might be network effects, proprietary data, licensing requirements, or simply a head start on distribution. Regulatory notes matter more in some industries (healthcare, finance, food service) than others, but if a license, certification, or compliance step gates entry into your market, say so here rather than letting a reader discover it later.

A filled example: TrailMetric

Here's how the six parts come together for a fictional but realistic startup, TrailMetric, a wearable-data platform for competitive youth soccer coaches.

Industry overview: The youth sports technology market has grown alongside rising participation in competitive youth soccer and increasing parent willingness to pay for performance tools, following the same trajectory seen in adult amateur athletics over the past decade.

Target segments: Two segments: (1) club-level coaches managing 15 to 25 players who need team-wide performance tracking, and (2) individual parents of competitive players (ages 10 to 17) who want private progress data outside the club's system.

TAM, SAM, SOM (bottom-up):

• TAM: Roughly 3 million registered youth soccer players in the U.S. At an average $120/year per player across all potential tools in this category, that's a $360 million total opportunity.
• SAM: TrailMetric only serves club-affiliated players whose clubs use wearable-compatible tracking, not the full competitive player base. That's an estimated 600,000 players, at the same $120/year, for a $72 million SAM.
• SOM: In year one, realistic reach is 40 clubs averaging 20 players each, at $120/year per player, which is 800 players and roughly $96,000 in year-one obtainable revenue.

Customer profile: A volunteer or part-time club coach, mid-30s to 50s, who currently tracks attendance and drills on a shared spreadsheet and has no visibility into individual player workload or injury risk between practices.

Competitive landscape: Direct competitors are two established team-management apps that added basic performance modules as an afterthought. Indirect competition is the spreadsheet and the coach's memory. The gap: neither direct competitor ties wearable data to age-specific training-load guidelines, which is the exact question coaches ask most.

Barriers to entry: Data accumulated across seasons creates a switching cost once a club has two years of player history in the platform. No specific regulatory barrier applies, though data privacy rules for players under 18 require careful handling.

Common mistakes in the market analysis section

Top-down-only sizing. Citing a $50 billion industry report and stopping there tells a reader you found a number on Google. It doesn't tell them you understand your own business. Always pair a top-down figure (if you use one at all) with a bottom-up calculation built from your own pricing and customer count.

No real segments. "Small businesses" or "millennials" is not a segment. If you can't picture the specific person, you haven't segmented yet. Go back to your customer conversations and pull out the traits that actually predicted who bought.

Stale data. A market-size stat from four years ago, presented without a date or caveat, undermines everything around it. If a recent figure doesn't exist for your exact niche, use the closest available data and say so.

The 1% fallacy. "We only need 1% of this massive market" sounds humble, but it skips the actual question: how, specifically, do you acquire that 1%? One percent of a $3 billion market is still $30 million, and a reader who has seen a hundred of these decks knows the size of the market matters less than your ability to explain your obtainable share.

What this means for your plan

The market analysis section isn't busywork on the way to the executive summary and the financials. It's the section that forces you to prove the demand exists before you build a company around an assumption. Walk through your industry, your segments, your TAM/SAM/SOM math, your customer, your competition, and your barriers to entry without hedging, and the rest of the plan gets easier to write, because you're no longer guessing at what comes next.

If you haven't built the surrounding sections yet, the business plan template founders actually use shows where the market analysis fits alongside the other eight sections, with filled examples for each. And EntraWorld's AI tools can help you turn your research notes into a structured market analysis, TAM/SAM/SOM math included, in a working session instead of a week.

Join EntraWorld free and build your market analysis section with the data you've already gathered, not another guess dressed up as a plan.