The market data in a business plan has to answer four questions: how many customers exist, what they spend, who already serves them, and what a business like yours earns. Start with free federal sources for demographics and local counts, add industry financial benchmarks for the numbers behind your projections, and finish with primary research that tests your own assumptions. This guide shows what to collect, where to get it, and how to present it so a lender or investor can check it.
TL;DR
- Market data in a plan should cover market size, customer demographics, location, spending habits and competitors, as the Census Bureau’s small business guidance outlines.
- Free federal tools are the right starting point for local counts and demographics. They rarely give you margins, cost structure or company-level financials.
- Find your NAICS code before you pull any data. A wrong code makes every later number wrong or too broad.
- Pair secondary data with primary research, and design that research to test your idea, not to flatter it.
- Every figure in the plan should carry a source and a date, so a reader can verify it in minutes.
Table of Contents
- What counts as market data in a business plan
- Start with your NAICS code
- Free federal sources: what they do well
- Financial benchmarks: the data behind your projections
- A step-by-step way to build the market section
- Check the data before it goes in the plan
- Our perspective: why granularity decides whether a plan is believed
- Where Bizminer fits
- A short checklist before you submit the plan
- FAQ
- Sources
What counts as market data in a business plan
Market data is any measurable fact about the customers, competitors and economics of the place and industry you plan to enter. It sits mostly in the market analysis section, but it also feeds your revenue forecast, your pricing and your funding request.
The SBA’s guide to writing a business plan treats the plan as a roadmap for structuring, running and growing the business. The Census Bureau’s guidance says a market analysis should address market size (the number of individuals or businesses), demographics such as age, gender, income and industry, location, and the competitive landscape.
In practice, you need five groups of data:
- Market size: how many potential customers, and what they spend in total.
- Demographics: who those customers are, by age, income, household type or, for B2B, industry and company size.
- Geography: how the picture changes across your trade area.
- Competition: who serves the market now, how many of them, and how they price.
- Industry economics: typical revenue, cost ratios, margins and growth for businesses like yours.
Most free guides cover the first four well. The fifth is where plans tend to go thin, and it is where lenders push hardest.
Start with your NAICS code
Before you open a single database, decide which industry you are in. The North American Industry Classification System (NAICS) is how federal agencies and most commercial data providers sort businesses. The SBA business plan guide is where many advisors point entrepreneurs when explaining why the code matters: with the wrong classification, the data you pull is either inaccurate or too broad.
A bakery is not just “food.” It may sit in retail bakeries, commercial bakeries or full-service restaurants depending on how it sells. A one-code difference can change the average revenue per establishment by a wide margin. If your business straddles two codes, run your numbers on both and say so in the plan.
Free federal sources: what they do well
Federal data is credible, free and easy to cite. Use it for the big picture.
Census Business Builder for local demand
The Census Bureau’s Census Business Builder is the quickest way to get a local snapshot. It combines population, household, income and business-count data in a map-based tool, and the Bureau describes it as offering data down to the census tract level. The Bureau of Labor Statistics has also described the tool as a way for small business owners to get a clear-eyed view of their potential market.
Useful pulls for a plan:
- Population and household income within your trade area
- Number of existing establishments in your industry in that county or tract
- Consumer spending patterns where the tool reports them
data.census.gov and BLS for depth
The Census page on powerful data for your small business also points to data.census.gov for more detailed tables. For employment and wage trends by industry, the Bureau of Labor Statistics is the standard reference. Together they let you show whether your industry is growing locally, and what labor will cost.
Where free data stops
Government statistics tell you how many bakeries exist in your county. They do not tell you what a bakery of your size typically earns after cost of goods, how its payroll compares with revenue, or whether your projected 12% net margin is realistic. SCORE’s market research guidance makes a related point: secondary data sets the scope and big-picture trends, but it lacks the nuance of primary research about your specific product.
That gap is where lenders ask questions.
Financial benchmarks: the data behind your projections
A forecast without a reference point is an opinion. SCORE warns that projections should rest on researched data rather than optimistic hunches, because investors and lenders expect a firm, profitable business case.
Industry financial benchmarks give you that reference point. They show typical ratios for businesses in your industry, ideally split by size and region:
- Gross and operating margin
- Cost of goods and payroll as a share of revenue
- Revenue growth
- Liquidity and leverage ratios
If your plan shows payroll at 18% of revenue and the industry norm for your size is 31%, you have either found an edge or made a mistake. A lender will assume the second unless you explain the first.
For a deeper walk-through of the method, see our practical playbook on industry financial benchmarks and the guide to small business benchmarks. If the plan will face a skeptical reader, four phases of benchmarking against U.S. industry data you can defend covers how to document each step.
A step-by-step way to build the market section
Step 1: Define the market in one sentence
Name the customer, the product and the place. “Dentists’ offices within 25 miles of Columbus, Ohio, that need outsourced billing” is a market. “Healthcare” is not.
Step 2: Size it with a funnel
Split the number into three layers: total market, the part you can serve with your model and location, and the part you can realistically win in the first few years. Investors know these as TAM, SAM and SOM. Our guide to making your plan’s market analysis investor ready walks through each layer with worked logic.
A simple local example for a coffee shop:
| Layer | What you count | Source type |
|---|---|---|
| Total | Residents and workers in a 3-mile radius | Census Business Builder |
| Serviceable | Adults in the income band that buys specialty coffee | Census income data plus your pricing |
| Obtainable | Daily customers your seats and hours can serve | Your capacity math, tested against benchmarks |
The third row is yours to calculate, which is exactly why it needs benchmark support. Compare your implied revenue per seat with what comparable businesses report.
Step 3: Map the competition
Count competitors from a directory or census data, then visit or review them. A comparative matrix works well: the Delmar College SBDC business plan template suggests scoring your business and competitors from 1 to 5 on criteria such as quality, price, location and marketing. A scored grid is easier for a lender to scan than paragraphs of description.
Be honest in the scores. A matrix where you win every row reads as marketing, not analysis.
Step 4: Add local detail
National averages hide local conditions. Rent, wages and customer income change from one metro to the next. Our guide to local market analysis for small businesses shows how to adjust the picture to your trade area.
Step 5: Run primary research
Secondary data tells you what is happening. Interviews, surveys and test sales tell you why. SCORE cautions that many entrepreneurs fall into confirmation bias, designing surveys to prove their hunch right. Ask open questions, talk to people who are not your friends, and write down the answers that contradict your plan. Then change the plan.
Step 6: Tie every number to a source
Put a footnote or a source line under each table: publisher, table name, and the date you pulled it. Your reader should be able to reproduce the figure.
Check the data before it goes in the plan
A short audit prevents most embarrassment.
- Age: is it the latest release? Economic data goes stale quickly.
- Fit: does it match your NAICS code, your geography and your company size?
- Sample: how many businesses or respondents sit behind the number?
- Source: can you name the publisher and the method?
- Consistency: does it agree with a second source, or at least with common sense?
A note on AI tools
AI assistants are useful for drafting and organizing, but they can state invented figures with confidence. The FTC has pursued companies for unsupported accuracy claims about AI products. In one 2025 matter the company claimed 98.3% accuracy while independent testing showed far lower performance, according to the FTC consent package. Treat any statistic an AI tool gives you as a lead, and confirm it against the original publisher before it enters your plan.
Our perspective: why granularity decides whether a plan is believed
We spend our days with accountants, advisors and lenders who read plans and test them. The pattern is consistent. Plans rarely fail because the writer lacked an overall market number. They fail because the numbers underneath were too coarse to check.
A statement like “the restaurant industry earns healthy margins” cannot be tested. A statement like “full-service restaurants with $500,000 to $1 million in revenue in the Southeast report a median operating margin of X, and our plan assumes a figure inside that band” can be tested, and it earns trust. The difference is segmentation by industry, geography and company size, which is why we built our data across more than 9,000 markets.
Three convictions shape how we think about this:
- Show your sample. A benchmark is only as good as the number of businesses behind it and the list of sources it draws from.
- Match the benchmark to the business. A national average for all firms in an industry is a poor comparison for a two-person shop in a small town.
- Write for the audit. Our data is accepted in U.S. Tax Court and used by government agencies. We treat every plan as though someone will check it, because someone usually does.
Free government data and paid benchmarks are not rivals. Use the first for demand and demographics, and the second for the financial reality of operating in your segment.
— Danny
Where Bizminer fits
If your plan needs industry financials by segment, we publish reports at published one-off prices: Industry Financial Performance and Industry Market reports are $249 per report, while Financial Report and Market Report are $349 per report. A Company Profile is $249 per report, and a Valuation Report is $349 per report. Subscriptions and API feeds are available for advisors who build plans regularly; their pricing is not published, so check the pricing page. To build a report around your industry, geography and size band, start with our custom analysis reports. Accountants who want benchmarks inside client deliverables can also see how custom financial reports work.
A short checklist before you submit the plan
- The market is defined by customer, product and place.
- The NAICS code is stated, and the data matches it.
- Market size is built as a funnel, with the obtainable share justified.
- Local data covers your actual trade area, not just the nation.
- Revenue, margin and payroll assumptions sit inside a benchmark range, or you explain why not.
- Competitors are compared on a scored matrix with honest scores.
- Primary research includes evidence that could have disproved your idea.
- Every figure has a publisher, a table name and a date.
If you are an advisor or accountant reviewing a client’s plan, the same list works in reverse. Ask for the source of each number and see how many answers come back.
FAQ
Where can I find free market data for a business plan?
The Census Bureau’s Census Business Builder and data.census.gov are the best free starting points for local demographics and business counts. The SBA also publishes market research and competitive analysis guidance. Free sources are strong on demand and weaker on industry financial ratios.
What is market analysis in a business plan?
It is the section that shows the market is large enough, reachable and not already saturated. It covers market size, customer demographics, location and competitors, and it supports the revenue projections later in the plan. Lenders and investors read it to judge whether your sales forecast is realistic.
How much market data does a business plan need?
Enough that each major claim has a source and a date. For a small local business, that usually means a trade-area demographic snapshot, a count of competitors, and a set of industry benchmarks for your size. A bank loan or investor pitch calls for more detail than a plan for your own use.
Can ChatGPT do market research for my plan?
It can help you draft questions, outline sections and summarize documents you supply. It should not be your source for statistics, because figures may be wrong or unsourced. Verify every number against the original publisher before you rely on it.
Sources
- Powerful Data for Your Small Business, U.S. Census Bureau
- Census Business Builder, U.S. Census Bureau
- Building a Business? Start Here, U.S. Bureau of Labor Statistics
- Write your business plan, U.S. Small Business Administration
- How to do Market Research, SCORE
- How Poor Forecasting Can Sabotage Your Business Plan, SCORE
- Business plan template, Delmar College SBDC
- FTC consent package on AI accuracy claims
