Pre-seed funding proof: What investors actually want to see?

There is a version of the fundraising story that goes like this. A founder has a brilliant idea, they put together a deck, they get meetings with investors, and one of them writes a cheque.

That version still happens. But it is rarer than the startup ecosystem makes it look, and it rarely happens the way people imagine. The investors who back “just an idea” are almost always backing something more specific: a founder with a track record, a problem space they know deeply, a team that has done it before, or a market signal so obvious that the idea itself is nearly irrelevant.

For everyone else, which is most founders, the game is different. The game is proof.

Not proof that your product will work. Not proof that you will definitely succeed. Pre-seed is too early for certainty of any kind. The game at this stage is demonstrating that you are not just guessing. That you have done enough work to have earned the right to be taken seriously. That there is something real here, not just a vision slide and a hope.

This post is about what that proof actually looks like, how much of it you need, and how to build it before you start having investor conversations in earnest.

Why is ” just an idea ” not enough anymore?

Five years ago, a compelling idea in the right space could get a founder a pre-seed meeting and sometimes a cheque. That era has not completely ended, but the bar has moved meaningfully.

Here is why. According to Crunchbase’s 2024 State of Private Market data, global seed and pre-seed deal volume fell by 22% in 2023 and remained subdued through 2024. Investors are doing fewer early-stage deals and being more selective about which ones they do. The founders who get funded at this stage are not necessarily smarter than the ones who do not. They are the ones who show up with evidence.

This shift is partly a market cycle and partly something more structural. The proliferation of startup content, accelerators, and founder communities over the past decade means that investor inboxes are fuller than ever. A well-crafted deck with a big market and a confident founder is no longer a differentiator. It is the minimum to be considered.

What creates genuine differentiation at pre-seed today is proof. Evidence that the problem is real, the demand exists, and you are the right person to go after it. The quality and specificity of that evidence are what separate the founders who get funded from the ones who do not.

What does proof actually mean at pre-seed?

Before we get into the specifics, it is worth clearing up a misconception that trips up a lot of first-time founders. Proof at pre-seed does not mean what it means in a science lab. You do not need to have demonstrated that your business model definitely works at scale. You do not need revenue. You do not even always need a product.

What you need is evidence that answers the most important questions a pre-seed investor is actually trying to answer. And those questions are not primarily about your product. They are about you, your problem, and your market.

The questions are roughly these. Is this a real problem with real people who genuinely feel it? Does this founder understand the problem at a depth that gives them an edge? Is there any signal that people want a solution, not just that they say they do? And is this market large enough that if it works, it is worth backing?

Proof, at this stage, is anything that moves the needle on those questions. It does not need to be revenue. It does not need to be a launched product. It does need to be something other than your own belief that the idea is good.

The six types of proof that matter most to pre-seed investors

Proof of the problem: Do people actually have this pain?

The most fundamental thing you can demonstrate is that the problem you are trying to solve is real, specific, and felt deeply by the people who have it. This sounds obvious. Most founders believe they have already established this. And most investors, when they dig in, find that the evidence is thinner than it appeared.

Real proof of the problem looks like this: documented conversations with 20 or more people who experience the problem, with specific quotes, specific pain points, specific workarounds they use today, and specific language they use to describe their frustration. Not “we talked to some customers, and they agreed this was a problem.” That is not evidence. That is confirmation bias.

The best founders can point to a pattern of unprompted behaviour that signals the problem. People are paying for inadequate solutions. They have hacked together workarounds in spreadsheets or manual processes. They are searching for solutions in communities and forums. The problem is already consuming their time and money, even without your product existing.

This kind of evidence is accessible to any founder before a product is built. It just requires systematic effort, and most founders skip it because talking to people feels less productive than building.

Proof of founder fit: Why are you the right person to solve this?

One of the most important decisions a pre-seed investor makes is not about the market or even the product. It is about the person. At this stage, where so little is proven, the quality of the founder is often the primary investment thesis.

Proof of founder fit is not about credentials. It is about demonstrating a specific connection between who you are and the problem you are solving. This connection can come from lived experience: you spent years in the industry and watched this problem waste people’s time and money firsthand. It can come from domain expertise: you are technically the right person to build this because of the skills you have developed over the years. It can come from prior success: you have built and shipped products before, which tells investors you can execute, not just ideate.

What investors are looking for, specifically, is whether you have an unfair advantage in this space. Not an advantage that anyone could develop with enough effort. An advantage that is specific to you. According to a 2024 survey by First Round Capital of their investment decisions, founder quality and founder-market fit ranked as the top deciding factor in over 60% of their pre-seed investment decisions, ahead of market size, product, or traction.

Ask yourself honestly: why are you the person who is going to win in this space? If the answer is “because I care about it and I am hardworking,” that is not founder fit. That is ambition, which is necessary but not sufficient. If the answer is “because I spent four years inside this industry and watched this exact problem cost companies $500,000 a year, and I know exactly why every existing solution fails,” that is founder fit.

Proof of demand: Have people shown they want a solution?

There is a critical distinction between people saying they want something and people demonstrating through behaviour that they want it. Investors know this distinction well because decades of startup failures have shown that people will enthusiastically agree that a product sounds great and then never use it or pay for it.

Behavioural proof of demand is much more convincing than stated demand. A waitlist of 500 people who signed up with their email is a signal. Three people who prepaid $500 for early access to a product that does not exist yet is much stronger evidence. Ten companies that agreed to participate in a pilot and dedicate employee time to it are stronger still.

The form the proof takes will depend on what you have built and who you are selling to. For consumer products, a landing page with strong organic conversion is meaningful. For B2B products, letters of intent from prospective customers, even non-binding ones, demonstrate that someone other than you believes the problem is worth solving now.

According to DocSend’s 2024 Startup Funding Report, which analysed over 200 pre-seed pitch interactions, decks that included concrete demand signals, such as waitlist numbers, pilot commitments, or letters of intent, spent an average of 3.5 minutes longer with investors than those that did not. That additional time reflects genuine engagement rather than polite attention.

Proof of insight: Do you know something others don’t?

This is the type of proof that most founders overlook, and it is one of the most powerful signals you can bring to an investor conversation.

A non-obvious insight is a piece of knowledge about your market, your customer, or your problem that is specific, counterintuitive, and that you have discovered through direct engagement rather than reading. It is the kind of thing that makes an investor lean forward slightly in their chair.

Examples of what this looks like in practice: “Everyone assumes the bottleneck in this process is X, but from 30 conversations with the people actually doing the work, it is consistently Y, and no current solution addresses Y.” Or: “The market is assumed to be dominated by enterprise buyers, but our research shows that 60% of the actual purchasing decisions are being made by a specific role that nobody is selling to directly.”

Non-obvious insights do two things simultaneously. They demonstrate that you have done the work to understand the problem deeply. And they raise the question in the investor’s mind of what else you know that others do not, which makes you more interesting to back.

Proof of momentum: Are you moving?

Investors are backing people who execute, not people who plan to execute. One of the clearest signals you can give at the pre-seed stage is that things are already moving without a cheque in hand.

Momentum proof does not need to be revenue or a launched product. It can be: a prototype that works, even roughly. A cohort of beta users who are actively using something. A partnership conversation that has progressed meaningfully. A specific technical problem that you have solved. A content strategy that is already building an audience in your target market.

What matters is that you are showing up to the fundraiser with things already in motion, not with a plan of what you will do once you are funded. The founder who says “we have been heads-down for three months, here is what we have built, here is what we have learned, and here is what the money is for” is categorically more fundable than the founder who says “here is what we plan to build once we have the money.”

The latter is asking an investor to trust a projection. The former is asking them to fund momentum that already exists. Those are very different asks.

Proof of thinking: Do you understand your market deeply?

The final category of proof is the quality of your analysis. This includes your understanding of the competitive landscape, your explanation of why existing solutions fail, your reasoning about why now is the right moment for this product to exist, and your clarity on the go-to-market approach.

This is not about having all the answers. Pre-seed investors do not expect founders to have everything figured out. What they do expect is that the questions you have not answered yet are the right questions, and that your reasoning about the ones you have tackled is sharp and honest.

A founder who says “the three existing solutions in this space fail for X, Y, and Z reasons, and here is the specific evidence we have for each of those failures” is demonstrating a depth of market thinking that signals this is not someone who just noticed a problem and started building. This is someone who has genuinely studied the space.

What proof is not?

A few things that founders often present as proof, which experienced investors largely discount.

A big market size from a research report. “The global [X] market is worth $4.2 trillion according to MarketsandMarkets” is in almost every pre-seed deck. It does not mean anything unless you can explain specifically which segment of that market you are addressing, why you can reach it, and why a portion of it will shift to you. Top-down market sizing from reports is not proof of anything except that you found a report.

Friends and family enthusiasm. The people who love you will tell you your idea is great. This is not data. It is encouragement, which has its own value, but it is not investor-grade evidence.

A working prototype that no external person has used. A prototype you built is proof that you can build. It is not proof of demand. Get it in front of real users, observe what happens, and bring that data to your investor conversations instead.

Agreement in user interviews that the problem is real. As mentioned earlier, people agreeing that a problem exists is much weaker evidence than people demonstrating through their behaviour that they want it solved. Push beyond the interview and find the behavioural signal.

How much proof do you actually need?

This is the question every founder wants a precise answer to, and the honest answer is that it varies. But there are some useful calibration points.

At the pre-seed stage, you are not expected to have product-market fit. You are not expected to have significant revenue. What you are expected to have is enough evidence to make the investment thesis credible to a reasonable person who did not already believe in your idea.

A useful framing: if you removed yourself from the conversation, would the evidence alone make a compelling case? Not a certain case. A compelling one. If the answer is yes, you probably have enough to have the conversation. If the answer is “only if you trust me and my conviction,” you need more evidence.

According to Docsend and Harvard Business Review’s joint 2024 study on pre-seed fundraising, the average successful pre-seed raise required founders to have conversations with 54 investors before closing. That sounds high, and it reflects that fundraising is a numbers game at this stage. But the founders who closed faster, within 20 to 30 conversations, consistently had sharper, more specific evidence backing their thesis.

How to build proof before you start fundraising

The good news is that building pre-seed proof is not primarily a function of money or a large team. It is a function of focused effort over a few weeks or months.

Start with structured user research. Set a goal of 25 to 30 conversations with people who match your target customer profile. Use these conversations not to pitch but to understand. Ask about their current process, their biggest frustrations, what they have tried, and what it costs them when things go wrong. Synthesise the patterns. The output of this effort is your proof of the problem and, often, the seeds of your non-obvious insight.

Build the smallest possible thing and put it in front of people. You do not need a polished product. You need something a real person can interact with and attempt to use. It can be a Figma prototype, a no-code tool, a manual process that simulates the product, or a landing page that describes the solution. The goal is to observe behaviour, not to collect opinions.

Document everything. Investor conversations are much more compelling when you can pull up a spreadsheet with 28 user interview summaries and show specific patterns. The founder who can say “across 28 conversations, 19 people mentioned this specific friction unprompted” is a different kind of credible from the founder who says “everyone we talked to agreed it was a real problem.”

Find one or two design partners. A design partner is a potential customer who agrees to work closely with you as you build, providing feedback and serving as a real-world testing ground. Even one or two committed design partners signal to investors that people with the problem are engaged enough to invest their time in your solution.

What should your pre-seed deck show?

Your deck is not where proof lives. The conversations you have had and the evidence you have gathered are where proof lives. Your deck is just a structured way to surface the most relevant parts of that evidence.

The slides that matter most at pre-seed are not the ones that look most polished. They are the ones who answer the six proof questions clearly and specifically.

Show the problem with evidence, not just a description. A slide that says “this problem affects 40 million small businesses globally” is less compelling than a slide that shows four verbatim quotes from people describing the exact frustration in their own words.

Show the demand signal specifically. If you have a waitlist, show the number and the conversion rate. If you have letters of intent, reference them. If you have pilot users, show what they are doing and whether they are coming back.

Show your insight explicitly. Have a slide that says, “Here is what we learned that most people do not know about this problem.” This is unusual enough that it creates genuine engagement.

Show your momentum. The last thing before you ask should be a clear picture of what you have already done, not what you plan to do. A timeline of the last 90 days of activity is more convincing than a 12-month forward plan.

Frequently asked questions

Do I need revenue to raise a pre-seed round? No. Revenue is compelling evidence of demand, but it is not the only form of evidence. Many successful pre-seed rounds are raised with no revenue, as long as other forms of proof, particularly demand signals and founder fit, are strong. That said, even a small amount of revenue, a few customers paying a modest monthly fee, is disproportionately powerful as proof of demand compared to almost anything else at this stage.

How many investors should I target at pre-seed? Plan for more conversations than you think you need. Based on Docsend’s 2024 data, the median pre-seed raise involves 54 investor conversations. In practice, you should aim to have your first tier of targets, your highest-conviction prospects, be 15 to 20 names. Have a second tier of 30 to 40 ready for when the first tier does not all convert. Fundraising at this stage is partly a quality conversation and partly a numbers exercise.

What is the difference between a pre-seed and a seed round in terms of proof requirements? At pre-seed, investors are primarily backing the founder and the problem. At seed, they are backing early evidence that the solution works. A seed round typically requires more demonstrated product traction: active users, early revenue, and measurable retention. Pre-seed requires less on the product side and more on the problem, founder, and insight side. The categories of proof shift rather than simply increase.

Should I approach angels or institutional pre-seed funds? Both, ideally, but with different expectations. Angels are often more willing to back a founder’s conviction with less evidence, particularly if they have domain knowledge in your space. Institutional pre-seed funds have a more systematic process and will usually look for a stronger overall evidence base. Start conversations with both simultaneously so you understand which type of investor responds to your story.

What is the biggest mistake founders make when trying to demonstrate proof? Presenting what they believe is true rather than what they can demonstrate. There is a meaningful difference between a founder who says “I know this problem is real because I experienced it myself”, and a founder who says “I know this problem is real because 27 of the 30 people I spoke to described the same friction using almost identical language, and here are the quotes.” Both founders may be right. Only one has proof.

Final thoughts

The shift from “investors fund ideas” to “investors fund proof” is not a cynical development. It is a rational one. At the pre-seed stage, a large percentage of startup ideas do not survive contact with the market. Investors know this. The ones who write early cheques are not trying to predict which idea is correct. They are trying to find founders who are already testing their assumptions, who are already engaging with real users, who are already learning faster than the field.

Proof is not about having all the answers. It is about demonstrating that you are asking the right questions and doing the real work to answer them. That is a higher bar than having a great idea, but it is also a bar that any founder can clear with a few months of focused effort.

If you are preparing for your first fundraising conversations and want to stress test your evidence before you get in front of investors, that is exactly the kind of challenge we work through with founders at Volumetree every day. We would be glad to help you think it through.