How many funding rounds to raise

There is no single right number of rounds. It is determined not by the calendar but by what exactly the company needs to reach its next important goal. Even experienced market players note that the name of a round means far less than the milestones behind it.

The classic “ladder” looks like this: pre-seed, seed, then Series A, B, C and possibly D. A pre-seed round usually ranges from a few hundred thousand to two million dollars. According to Carta, the average seed round in 2025 reached about $3.1 million, Series A about $10 million, Series B about $30 million and Series C $50 million or more. But these are benchmarks, not a mandatory path: many companies stop at one or two rounds, while some go on to five or more.

Every round has a price, and that price is your stake. According to Carta, median dilution looks like this: about 20% of the company is sold at seed, about 18–20% at Series A, about 14–17% at B, about 10–12% at C and about 8% at D. If you run the numbers for a company with two founders, they are left with roughly 71% after seed, about 57% after A, about 46% after B and about 36% after C. In other words, every extra round reduces your share of the final outcome, and you need to calculate this in advance.

So a sensible approach is to raise exactly as much as you need for the next measurable milestone. In practice, that means 18–24 months of work, and according to Carta, more than two years pass between seed and Series A on average. If a round does not bring you closer to a clear goal, it is most likely unnecessary. A separate trap is a chain of small bridge rounds and SAFEs “stacked” on top of each other, which quietly dilutes your stake and makes the next round harder.

A telling example of the opposite path is Mailchimp. Founded in 2001, the company never raised venture investment, was profitable from day one and in 2021 was sold to Intuit for about $12 billion. It is the biggest-ever sale of a business that grew without outside investors. But there is an important caveat: this path is exceptional rather than typical, and it works where a business becomes profitable early and does not need large investments before entering the market.

The bottom line: first ask yourself whether you need outside capital at all, then define the milestone and the amount needed to reach it, and only then choose a round.

Sources:

1. Carta — How Much Equity Founders Sell in Each Venture Round and Real Dilution Per Venture Round
2. SaaStr (Jason Lemkin) on Carta data — The Actual, Real Dilution from Series A, B, C and D
3. Peony — Startup Fundraising Rounds Explained (Seed to Series C)
4. Qubit Capital on Carta data — Stages of VC Funding
5. Mailchimp — SiliconANGLE, Axios, TinySeed