Quick answer

Before building anything, every startup must be able to answer ten questions with evidence, not hope: who the customer is, what problem they actually have, whether they are actively looking for a solution, how big the market is, who is already solving it, what makes you different, how you will reach them, what they will pay, whether the unit economics work, and what your plan is if your first assumptions are wrong. If any of these answers is "I am not sure yet," that is the next thing to find out.

Around 305 million startups are founded every year globally, yet only 40% ever become profitable. The gap between those that make it and those that do not is almost never about the quality of the idea. It is almost always about what the founder did or did not find out before they started building.

Most failed startups do not die from bad execution or bad timing. They die because the founder built something no one really needed, using money and time they could not afford to spend. That is not a strategic failure. That is an information failure. And it is completely preventable.

These 10 questions are not a feel-good checklist. They are a stress test for your idea. Every answer you give with real evidence rather than assumption reduces your probability of joining the majority of businesses that do not make it. We covered the statistics in detail in our guide on why most businesses fail before they start if you want the full picture first.

Work through each one honestly. The questions you cannot answer yet are the most valuable output of this exercise.

Question 1: What Problem Are You Actually Solving?

This is the foundation. Everything else you build either reinforces it or exposes a crack in it. And yet it is the question most founders answer too quickly, with too little rigor, and move on from before they have a real answer.

There is a critical distinction between a problem you find intellectually interesting and a problem your target customer considers urgent enough to pay to solve. Many aspiring entrepreneurs fall in love with their solution before validating the problem. They build products nobody wants or launch services that solve minor inconveniences rather than genuine pain points.

The test that separates real problems from interesting ones. Ask ten potential customers to describe their problem to you without you saying a word about your idea first. If they describe something close to what you are solving, unprompted, you have a real problem. If you have to explain the problem to them before they recognise it, keep digging.

The second layer of this question is pain intensity. Even real problems exist on a spectrum from mildly annoying to genuinely urgent. A problem worth building a business around is one that your target customer is actively trying to solve right now, even if imperfectly, with existing tools, workarounds, or manual effort. That active effort is your strongest signal.

Before you move on from this question, write one sentence that describes the problem from your customer's perspective, not yours. If you cannot do that yet, you are not ready to start building.

Question 2: Who Exactly Is Your Customer?

Most founders define their target customer in the broadest terms possible because narrowing down feels like limiting their opportunity. It is actually the opposite. The narrower and more specific your customer definition is at the start, the faster you will grow.

You cannot build for everyone. You have to zero in on a real person with real problems. A product that tries to please two fundamentally different groups usually ends up pleasing no one. Airbnb did not try to serve all travelers. It solved a specific problem for guests who found hotels expensive and impersonal, and for hosts who wanted to earn income from space they already had. That clarity shaped everything about how the product was designed, priced, and communicated.

Vague vs specific customer definition

Too vague

"Small business owners"

"Busy professionals"

"Anyone who wants to save time"

Specific enough

"E-commerce founders doing under $500k/year in revenue who handle their own bookkeeping"

"B2B SaaS sales managers at companies with 10 to 50 reps"

"Freelance designers who invoice 5 or more clients per month"

Your customer definition should be specific enough that you could describe a single real person who represents your ideal buyer and name the exact problem they have that you solve better than anyone else. If you cannot do that yet, that is your next piece of research, not a product sprint.

Question 3: Is There Evidence of Active Demand?

This is where founders most commonly fool themselves. Enthusiasm from friends, encouraging responses to an ideas post, and a few people saying "I would definitely use that" are not evidence of demand. They are social signals. Real demand shows up in behavior, not in what people say they would do.

Real demand reveals itself in behavior. If people are searching for answers, complaining on Reddit, cobbling together workarounds, or paying for imperfect existing solutions, that is a green light. If no one is asking questions, seeking fixes, or visibly frustrated, you might be solving a problem that is not top of mind.

Here is how to find real evidence of demand before you write a single line of code or spend a dollar on development:

1

Search volume data

Use Google Keyword Planner, Ahrefs, or Semrush to check how many people search for your problem category per month. Low search volume for a problem-focused query means low active demand.

2

Reddit and community forums

Search Reddit, Facebook Groups, and niche communities for the language people use to describe this problem. Recurring complaints with high engagement are strong demand signals.

3

Competitor reviews

Read the one-star and two-star reviews of existing solutions. What do people consistently complain about? That is your opportunity space and your proof that demand exists.

4

Google Trends

Check whether interest in your problem category is growing, stable, or declining. A rising trend is a tailwind. A declining one is a warning you need to take seriously.

Question 4: How Big Is the Market?

Market size is not vanity. It determines whether your business can grow enough to be sustainable, whether it is worth outside investment, and whether the economics of customer acquisition will ever work in your favour. Clarity about your market size prevents you from building a product that cannot grow. Even if a market is large, it is useless if you cannot access it.

The standard framework for thinking about market size uses three layers:

Layer What it means Example: meal prep app for athletes
TAM
Total Addressable Market
Everyone who could theoretically benefit from your product All people interested in fitness globally
SAM
Serviceable Addressable Market
The segment you can realistically reach with your current model Competitive athletes in English-speaking markets
SOM
Serviceable Obtainable Market
The share you can realistically capture in the next 1 to 3 years Competitive athletes using macro tracking apps who currently spend on coaches

Most founders jump straight to the TAM and quote the largest number they can find. Investors and, more importantly, your own planning process need the SOM. That is the number that tells you whether you can build a real business at the size of customer base you can actually acquire with the resources you have.

For how to calculate market size from scratch, see our guide on how to calculate market size using TAM, SAM, and SOM.

Question 5: Who Is Already Solving This?

When founders discover that competitors exist, many treat it as a problem. It is not. It is proof that the market exists and that people are willing to pay for a solution. The absence of any competition is far more dangerous than the presence of it. No competition usually means either the market is too small, the problem is not urgent enough to pay for, or someone smarter already tried and gave up.

It is almost certain that your startup idea already has competitors in the market. That does not make it a bad idea. It means there is a real market, and your job is to find your specific place in it.

Mapping your competitive landscape properly takes about two hours and it saves you from two very expensive mistakes. The first is building something that already exists and adding nothing meaningfully different. The second is positioning yourself against the wrong competitors and missing the opportunity to own a specific slice of the market that no one is serving well.

To understand how to approach the strategic question of where to compete versus where to create your own space, read our guide on problem-first vs product-first business strategy.

Question 6: What Makes You Different?

Your unique value proposition is the single most important sentence your business can say. It is not a tagline. It is not a mission statement. It is a clear, specific, honest answer to the question your customer is silently asking from the moment they first encounter you: why should I choose this over everything else I could do instead?

The UVP is the core feature you base your minimum viable product on. Having a clear and concise UVP is absolutely critical before you start any development. It determines what you build, what you leave out, how you price it, and how you talk about it. Everything in your product is downstream of this answer.

Three legitimate forms of differentiation. You are genuinely different if you are faster than alternatives in a way that matters to your customer. You are genuinely different if you serve a specific underserved customer that competitors ignore. You are genuinely different if your approach produces a meaningfully better outcome for a defined use case. "Better quality" and "great service" are not differentiation. Every competitor claims both.

Test your UVP with this structure: We help [specific customer] achieve [specific outcome] by [unique method or approach]. If the sentence works, someone reading it who matches your target customer should immediately think "that is exactly what I need." If they need it explained further, keep refining.

Question 7: How Will You Reach Your First Hundred Customers?

Distribution is the most underestimated challenge in building a startup. Most founders spend 90% of their pre-launch energy thinking about the product and roughly 10% thinking about how they will actually get it in front of the people who need it. That ratio needs to be closer to 50-50.

Your go-to-market strategy is built on five pillars: product analysis, product messaging, the sales proposition, marketing strategy, and sales strategy. You need to be able to speak to all of these and have a clear plan for how customers actually find and choose you.

The question of your first hundred customers is intentionally specific. Not your first thousand, not your growth strategy. Your first hundred. Because the strategy for getting those first hundred usually cannot be scaled, and it should not be. It should be personal, direct, and slightly uncomfortable in its intensity. You should be able to name, by channel, exactly how you will find each group of those first hundred people.

Where your first customers should come from

Your existing network Highest conversion, fastest
Communities where your customer already gathers High relevance, low cost
Direct outreach to ideal customer profiles Slower but targeted
Paid advertising Not for your first 100

The channel you choose determines your acquisition cost, your feedback loop speed, and who you attract first. Your first customers shape the product more than any roadmap document. Getting this right matters far more than most founders realise. For a deeper look at organic versus paid acquisition strategy, read our guide on growth marketing vs traditional marketing.

Question 8: What Will They Pay and Have You Tested It?

Pricing is one of the most consistently under-researched decisions in early-stage startups. Most founders either copy what competitors charge, pick a number that feels reasonable to them, or default to charging less than everyone else as a way to compete on entry. All three of these approaches are guesses dressed up as strategy.

Your pricing strategy should be justified based on your product's value to the customer, your costs, your competition, and your target audience's actual willingness to pay. The key word there is willingness, not preference. People almost always prefer to pay less. The question is what they will actually pay given the value they receive.

The only way to test willingness to pay is to ask for money. Not "would you pay for this?" which gets you a social answer, but an actual transaction or pre-order or commitment that costs them something real. That is the test. If someone will not give you a credit card number or sign an intent-to-purchase letter for your MVP, the answer to this question is not yet answered.

For a full framework on how to set prices that maximise profit without losing customers, read our guide on how to price your product for maximum profit.

Question 9: Do the Unit Economics Work?

You can have the right customer, the right problem, a strong product, and a clear distribution channel, and still build a business that slowly destroys money without ever turning a real profit. Unit economics is the check on all of that. It is the math that tells you whether the fundamental transaction at the heart of your business is profitable.

In plain terms, unit economics answers one question: does each customer you acquire cost less to get than they generate in revenue over their lifetime with you? If the answer is no, every customer you add makes the problem worse, not better.

The unit economics equation in plain language

Customer Acquisition Cost (CAC) What you spend to get one customer
Lifetime Value (LTV) Total revenue from one customer over their full relationship with you
LTV must be greater than CAC Ideally 3x or more for a healthy business

Do not come to investors, or to yourself as a planning exercise, with advertising as your main revenue source unless you have reached a scale where the numbers actually work. You need a revenue model that can be put in place from day one and that gets better, not worse, as you grow.

For a complete guide to calculating and reducing your customer acquisition cost, read our guide on what is customer acquisition cost and how do you reduce it.

Question 10: What Is Your Plan If Your First Assumptions Are Wrong?

Every startup operates on a set of assumptions. About who the customer is. About what they will pay. About how they will find you. About which feature matters most. The honest reality is that several of those assumptions will turn out to be wrong, and the startups that survive are the ones that have built a process for discovering which ones and adjusting before they run out of money or time.

You should have a clear contingency plan for potential setbacks. Scaling is a critical challenge for startups and you should have a well-thought-out plan for managing operational challenges that come with growth.

This question is not asking you to plan for failure. It is asking you to separate the assumptions you are certain about from the ones you are testing. The most important thing to know before you build is which of your assumptions, if wrong, would kill the business, and how quickly you could find out whether they are right or wrong before you are too committed to course-correct.

The assumption you should test first is always the one that would kill the business if it is wrong. Not the assumption that is easiest to test. The one that is most dangerous to get wrong. Build the smallest possible version of your offer around that single assumption, get it in front of real customers, and find out the truth before you build everything else.

Your Startup Readiness Scorecard

Use this to assess where you actually are before you make your next move. Be honest. A no that you know about now is worth far more than a yes you discover later.

# Question Evidence required If you cannot answer yet
1 What problem am I solving? Customer describes it unprompted in interviews Run 10 customer interviews before building anything
2 Who exactly is my customer? One-sentence persona with specific role, context, and problem Narrow your definition until you can name real examples
3 Is there active demand? Search data, community complaints, competitor reviews Do the research before writing a line of code
4 How big is the market? Realistic SOM calculation based on reachable customers Build your TAM, SAM, SOM model using real data
5 Who are my competitors? Full competitive landscape mapped with honest assessment Spend two hours mapping every alternative your customer currently uses
6 What makes me different? UVP that resonates with target customers without explanation Test your UVP with 10 real potential customers before finalising it
7 How will I reach my first 100 customers? Named channels with specific tactics for each Map out the exact path from zero to your first hundred before launch
8 What will they pay? Someone has actually committed money or signed an intent Get pre-orders or commitments before you build the full product
9 Do the unit economics work? LTV is at least 3x your estimated CAC Model your unit economics before you invest in growth
10 What is my plan if assumptions are wrong? Documented assumptions ranked by risk, with test for each Write your assumption list and identify which you will test first and how

If you have solid, evidence-based answers to all ten, you are genuinely ready to start building. If you have seven or eight, you know exactly what research to prioritise before your first sprint. If you have fewer than five, the most valuable thing you can do right now is not build. It is go find out.

The founders who answer these questions rigorously before they build are not slower than the ones who skip them. They are faster. Because they build less of the wrong thing, spend less money correcting it, and arrive at something customers actually want much sooner than founders who start with the product and work backwards to the customer.

Frequently Asked Questions

The ten most critical questions are: what problem are you solving, who exactly is your customer, is there evidence of active demand, how big is the market, who is already solving this, what makes you different, how will you reach your first hundred customers, what will they pay, do the unit economics work, and what is your plan if your first assumptions are wrong. These cover the four dimensions that determine whether a startup has a real chance: market, customer, product, and distribution.
Validation means getting real people to take a real action that costs them something before you build the full product. The most reliable validation methods are running customer interviews to confirm the problem exists and is urgent, checking search data and community forums for evidence of active demand, mapping competitors to confirm the market exists, and getting pre-orders or signed intent-to-purchase letters to confirm willingness to pay. If someone will not hand over money or make a formal commitment, the idea is not yet validated.
A unique value proposition is a single clear statement that explains who your product is for, what specific outcome it delivers, and why it delivers that outcome better than any alternative. It matters because it shapes every other decision in your business: what you build, what you leave out, how you price it, how you market it, and who you hire. A weak or vague UVP produces a weak and vague business. A sharp and specific UVP gives every team member and customer a clear reason to choose you.
Demand shows up in behavior, not in what people say they would do. Concrete signals of real demand include high search volume for problem-related queries, recurring complaints in community forums and competitor reviews, people currently paying for imperfect alternatives to your solution, and willingness to commit money or time when you offer them a pre-launch version. The absence of any of these signals is worth taking seriously before you invest in building.
Unit economics refers to the revenue and costs directly associated with acquiring and serving a single customer. The two most important unit economics metrics for a startup are Customer Acquisition Cost (CAC), which is what you spend on average to acquire one new customer, and Lifetime Value (LTV), which is the total revenue that customer generates over their entire relationship with your business. Healthy unit economics means your LTV is significantly higher than your CAC, with a ratio of 3x or more generally considered a healthy baseline.
Your first customers should come from your existing network, communities where your target customer already gathers, and direct personalised outreach to people who fit your ideal customer profile. Paid advertising is almost never the right tool for your first hundred customers because it is expensive, slow to optimise, and attracts a less committed customer than one who sought you out or was referred. The goal at this stage is learning speed, not scale. Each early customer should teach you something about the product, the pricing, or the positioning that you could not have learned any other way.

Want more guides like this?

Browse all free business guides on Groundwork.

Browse all guides →