Market research for startups: a checklist with cited sources
Last updated July 29, 2026
Market research for a startup is not a fifty-page report nobody reads. It is a short list of questions you answer with real sources so you know, before you build, whether there is a reachable customer with a painful problem. This checklist walks the questions in order, shows where to find honest data, and flags the traps that make founders overestimate their market.
Start with the customer, not the market size
The most common mistake is opening with a giant number: the market is 50 billion dollars. That number is almost always irrelevant, because you will never serve all of it. Start instead with a specific person: who has this problem badly enough to pay, what do they do today to solve it, and how much does that cost them in time or money? Ten real conversations with that person tell you more than any report. Write down the exact words they use for the problem, because those words are your positioning and your ad copy later.
Size the market from the bottom up
Once you know the customer, size the market from the bottom up, not the top down. Bottom up means: how many of these specific customers exist, what would each pay you per year, and how many could you realistically reach in the first year or two? Multiply those. This gives a number you can defend and act on, unlike a top-down slice of a huge industry figure. For the count of customers, use sources like national statistics offices, industry association membership counts, and public company filings, and cite them, so a later investor or your own future self can check the math.
Map the competition honestly, including the boring ones
List the direct competitors, but do not stop there. The most dangerous competitor is usually the status quo: the spreadsheet, the manual process, or the habit your customer already uses and does not hate enough to switch from. For each real competitor, note what they charge, what they are good at, and the specific gap you would fill. If you cannot name a gap that a customer would actually pay to close, that is a finding, not a failure, and it is far cheaper to learn it now.
Check the boring blockers before you fall in love
Before you commit, spend an hour on the unglamorous questions that kill startups quietly: are there regulations or licenses you would need, what does it cost to acquire one customer through the channels you can actually use, and what are the real unit costs once you subtract fees and returns? A market can be large and real and still be a bad business if acquisition costs more than a customer is worth. Sourcing these early, with citations, is the difference between a plan and a hope.
Keep it living, and label what you assumed
Good research is not done once. As you talk to more customers and run more tests, update it, and be honest about which claims are sourced facts and which are still assumptions you have not checked. A plan that clearly marks its assumptions is more trustworthy than one that states everything with false confidence, and it tells you exactly what to test next.
Common questions
How much market research does a startup need before building?
Enough to answer four questions with sources: is there a specific customer with a painful problem, how many of them can you reach, what do they use today, and do the unit economics work. That is usually days, not months.
Top-down or bottom-up market sizing?
Bottom up. Count the specific customers you can reach and what each would pay, rather than taking a percentage of a huge industry number, which is easy to inflate and hard to defend.
Why cite sources for early research?
So the numbers are checkable by an investor, a cofounder, or your future self, and so you can tell an assumption apart from a fact and know what still needs testing.
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