Pre-seed, seed, Series A, Series B and growth rounds each fund a different milestone. Knowing what a stage is meant to prove tells you what evidence to expect at that stage.
11 min read · Level 1
I find it more useful to label a startup by what it has proved than by the name of its last round. Round names drift with fundraising markets; proof does not. A company called Series B that has not yet proved repeatable sales is, for investment purposes, a seed-stage risk at a Series B price.
Funding stages are loose conventions rather than rules, and the amounts vary by market, sector and year. What each stage is typically meant to prove is more stable:
Stage Usually funds Typically meant to prove Pre-seed building a first product the team can build something people try Seed finding product-market fit a specific group truly needs it Series A building a repeatable way to sell growth can be scaled with more money Series B scaling that engine the model works at larger scale Growth / C+ expansion, new markets, acquisitions the company can become very large
Each round usually sells a share of the company, commonly somewhere around 10% to 25%, so founders and early investors are diluted at each step.
Early rounds often use SAFEs or convertible notes; from Series A onwards priced equity rounds are more typical.
A company that raises the next round without having proved what the previous round was meant to prove is carrying risk forward - often at a higher price.
Because it tells you what evidence is reasonable to ask for. Demanding repeatable sales from a pre-seed company is unfair; accepting only an idea from a Series B company is careless.
It also shows why companies fail between rounds: they spend a round's money without reaching the proof that the next round's investors require.
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A company at the end of its seed money.
Seed round goal: find product-market fit in dental practices Evidence after 18 months: 40 paying practices, 12-month retention of 58%, most growth from founder sales
Series A investors want evidence of a repeatable sales engine. The company has early customers but weak retention and no process beyond the founder. It has not proved the seed-stage question convincingly, so raising a Series A on strong terms is difficult - regardless of how impressive the founder's pitch is.
Judging a company against the wrong stage's standard, or assuming a larger round means the previous stage's risks have been resolved.
Look at what has actually been proved, not only the name of the last round.
State the milestone this money is meant to reach.
Confirm the earlier question was answered before accepting a later-stage price.
When evaluating a startup at any funding stage.
Do not treat stage labels or typical amounts as fixed. Markets and sectors use them very differently.
Data from venture industry trackers over the 2010s and early 2020s showed seed and Series A round sizes and valuations rising substantially, with rounds commonly called seed in later years resembling earlier Series A rounds in size, before moderating as markets tightened.
Stage names are not stable across years. Judge evidence, not labels.
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