Intro.
#The First Filter a VC Applies — Market and Founder
A VC's first filter is simple: is there a strong pull toward either the size and growth of the market, or the founder's persistence and character? If both come across as lukewarm, the company gets passed over regardless of how polished the plan is. Early-stage investing is not about finding a company where every box is checked at an average level, it is about finding one where a single dimension is overwhelmingly strong.
| Lens | What a Strong Pull Looks Like | What a Weak Pull Looks Like |
|---|
| Market | A large, fast-growing market with a clear shift underway | A stagnant market, or one that's big but has no clear point of entry |
| Founder | Deep, persistent focus on one domain, a proven track record of execution | A flashy idea with no evidence of execution behind it |
The earlier the stage, the more weight the founder carries. At seed, the team can account for roughly half of the overall evaluation, simply because at a point with no product, no revenue, and no customers, the team is essentially the only thing that can be verified. As the company moves up in stage, market size and metrics carry more of the weight.
TIP
Either the market or the founder needs to be overwhelmingly strong. A company where everything is average gets filed under 'no reason to reject, but no reason to invest either,' and that classification is the single most common reason companies get passed over.
02
#Market — A Slice of a Big Market vs. All of a Small One
The question a VC ultimately asks about your market boils down to one thing: are you going after 5% of a ₩1T market, or 50% of a ₩100B market? Early-stage investors would rather see a company capture a slice of a large market than dominate a small one, because even a 50% share of a small market does not produce the return multiple they need.
Growth rate matters more than current market size. A market that is small today but will be large in 10 years beats one that is large today but stagnant. A VC is betting on the slope of change, not the absolute size of the market.
This preference comes from the fact that early-stage returns follow a power law. Across a portfolio of roughly 100 companies, a handful at the top account for most of the total value. An average outcome contributes almost nothing to fund returns. That is why VCs only bet on companies that show the potential for 10x growth or more.
| What a VC Looks For | How to Verify It |
|---|
| The market's growth slope | How the market has shifted over the last 3 to 5 years, and the direction of regulatory, technological, or demographic change |
| Room for 10x growth | A share simulation — what revenue looks like at 50% share |
| A beachhead market | A path to owning 100% of the smallest market you've defined as your first target |
You do not go after a big market from day one, you start by dominating a small one and expand outward in concentric circles. An e-commerce company that started with a single book category, a payments company that started with a group of power sellers on one marketplace, and a social network that started on a single college campus all followed the same path. A pitch that claims to target a massive market from day one actually reads as a sign that the category has been defined wrong.
주의
A business plan that opens its first page with 'a market worth hundreds of billions of won' almost never makes it through. Break your market into TAM, SAM, and SOM, and lead with the path to owning your smallest beachhead market completely.
03
#Founder — Not What You Say, but What You've Already Done
What a VC looks for in a founder is not the size of their vision, it is evidence of execution. Someone who has never heard of a term sheet but built a product users genuinely love will raise money more easily than someone fluent in every fundraising technique whose usage graph is flat. A business plan packed with plans but thin on 'what we've already done' gets marked down immediately.
| Founder Trait | What a VC Checks For |
|---|
| Evidence of execution | An MVP, records of customer interviews, traces of failure and retrying |
| Honesty and self-awareness | Do they admit what they don't know, do they avoid hiding weaknesses |
| Metacognition | Do they know their own blind spots and hire people to cover them |
| Persistence | Signs of 5 to 10 years spent immersed in one domain |
| Ability to recruit talent | The story of how they brought on a co-founder and their first hires |
Of all these, honesty comes before ability. Trust does not recover once it is broken. If there is any sign of inflating a verifiable number or hiding a weakness, the review ends right there, no matter how good the market or the team looks otherwise. A pitch that claims to be superior to competitors on every single dimension, refusing to admit any trade-off, reads as a sign the founder is not actually confident about anything.
TIP
A question VCs often save for the end of an interview is: why are you doing this? 'I want to make money' is a weak answer. 'I lived this problem myself and couldn't not do it' is a strong one. How genuine a founder's motivation is turns out to predict how well they'll hold up through the hard stretches.
04
#Business Structure — Does It Work Without Funding?
Paradoxically, the company a VC most wants to fund is one that barely needs the funding. A business structure so capital-efficient it could grow without outside money is itself a strong signal. The opposite, a business built so that it only works if it gets funded, runs directly against capital efficiency.
A VC is not looking at your absolute revenue, they are looking at your unit economics: how much it costs to bring in a customer versus how much you get back (LTV, CAC), whether customers who come in actually stay (retention, repeat purchase rate), and your week-over-week or month-over-month growth rate. The specific metric that matters most first depends on the type of business.
| Business Type | The Metric a VC Checks First |
|---|
| Services / platforms | MAU, WAU, DAU, return-visit rate, DAU/MAU ratio |
| Commerce | Gross merchandise value, repeat purchase rate, ROAS, average order value, CAC |
| Subscription / SaaS | MRR/ARR, LTV:CAC, NRR, ARPU |
A labor-intensive, low-margin, brick-and-mortar-style business sees costs rise at the same pace as revenue, so it never produces a J-curve. That kind of structure is a poor fit for VC capital regardless of whether the business itself is good or bad. For digital businesses, a VC also checks whether there is a path to global expansion. A business aimed solely at the domestic Korean market tends to have a lower pass rate.
주의
A business plan built on the premise that 'funding will solve everything' is one of the fastest ways to get rejected. Investment is fuel that accelerates growth, it is not the condition that makes a business viable in the first place.
05
#Defensibility — Will You Still Be Standing in 6 Months?
Differentiation is a structure, not an adjective. Words like 'innovative' or 'unrivaled' are not evidence of defensibility on their own. A barrier to entry that actually holds up over time comes in only four forms.
| Barrier to Entry | What It Means |
|---|
| Proprietary technology | Technology clearly superior to the next-best alternative — a marginal improvement is not enough |
| Network effects | A structure where the product gets more valuable as more people use it |
| Economies of scale | A structure where unit costs fall as scale increases |
| Brand | A trust asset where people choose you by name, even for an identical product |
A product that is just a thin wrapper on top of a general-purpose AI model's API erodes within 6 to 12 months. A real moat does not come from a feature, it comes from an asset that is hard for anyone else to replicate: proprietary data you've collected and refined yourself, deep integration into a specific domain, or accumulated user behavior data. A VC is not asking what you are today, they are asking what is still standing after a competitor catches up.
Most of a tech company's value comes from cash flows far in the future, not the near term. That is why a VC scrutinizes durability more closely than growth speed. It is not the company that becomes number one the fastest that captures the value, it is the one still standing at the end of the category.
TIP
'We have no competitors' reads as a weakness, not a strength. It means one of two things: the market is too small, or the research was not thorough enough. Every business has direct and indirect competitors and substitutes, and your explanation of your moat needs to start from acknowledging that.
06
#A VC's Decision-Making Heuristics — Poker, Onions, and Strengths
A VC's judgment does not come from spur-of-the-moment intuition, it follows a repeating model. Understanding that model tells you exactly what you need to prove at each stage.
- A game of poker — early-stage investing means betting on 1 to 3 cards. Seed is one card, Pre-A is two, Series A is three. The less information there is, the more it matters to have one or two unmistakable reasons to invest, rather than trying to defend every weakness.
- A risk onion — a startup is an onion wrapped in layers of team risk, product risk, technology risk, market-adoption risk, and revenue risk. Each funding round is a tool for peeling back one layer. A strong pitch shows a deliberate design: which risk this seed round removes, and what the next round removes after that.
- Investing in strengths — most breakout companies are a combination of an extreme strength and an acceptable flaw. A VC that only looks for companies with no flaws misses every big win. A VC looks at the size of the strength, not the absence of weakness.
- Slot constraints — a VC's real constraint is not capital, it is time and board seats. Even a perfectly good company can get passed over to leave room for a potentially better opportunity down the line. This is the answer to 'why did we get rejected when we had everything covered.'
There are also rough numeric benchmarks expected at each stage. Without knowing these baselines, it is hard to judge what to prepare for which round.
| Item | Early-Stage Benchmark |
|---|
| Evidence of product-market fit | 5 or more paying customers, or 15%+ month-over-month growth |
| B2B subscription retention | Net Revenue Retention (NRR) of 100% or higher |
| B2C usage intensity | DAU/MAU ratio of 25% or higher |
| Early team equity | About 10% for the first key hire, 4-year vesting with a 1-year cliff |
| Dilution per round | Seed 10–15%, Series A within 20–30% |
TIP
These numbers are not hard cutoffs, they are a starting point for the conversation. What matters is not the number itself, it is choosing the metric that fits your stage and presenting it with real evidence behind it.
07
#Red Flags That End a VC's Review on the Spot
The following signals end a review immediately, no matter how good the market or the founder looks otherwise. Check your business plan against each one before you submit it.
| Red Flag | How a VC Reads It |
|---|
| Premised on 'we just need funding to succeed' | High dependence on outside capital — conflicts with capital efficiency |
| Frames a fast exit or IPO as the primary goal | A founder unlikely to stay the course long-term |
| Repeats vision and market size, thin on execution evidence | All plan, no action |
| Refuses to acknowledge any trade-off | No sense of focus or prioritization — something is being hidden |
| A lapse in trust or integrity | Review ends immediately, regardless of ability or market |
| Co-founders split equity evenly with no rationale, a hastily assembled team | Diffused responsibility, the first thing to fall apart in a crisis |
| Plans to solve a core capability by 'hiring for it later' | Has not secured the core competency the business actually depends on |
| Copies someone else's playbook wholesale | No distinct approach of their own |
| Sets a valuation at 200% or more of a fair price | A negotiating posture that raises the risk of failing the next round |
주의
Most red flags are a matter of how something is framed and the attitude behind it, not the underlying idea. The exact same business can read as a red flag or a strength depending on how it is written up.
Summary.
#Self-Check — Does Your Business Plan Answer a VC's Questions?
- Have you defined your market as a slice of a bigger one, and simulated your revenue at 50% share?
- Have you laid out a path that starts by owning 100% of your smallest beachhead market?
- Have you proven execution through what you've already done, your MVP, customers, and experiment results, rather than through vision alone?
- Do you explain your strengths after acknowledging your weaknesses and trade-offs?
- Have you included the unit-economics metrics that fit your business type, LTV, CAC, retention, with supporting evidence?
- Do you explain your moat through one of the four real barriers to entry, rather than through adjectives?
- Have you shown a deliberate design for which risk this round removes?
- Does your business plan contain any of these 9 red flags?
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