What Is Seed Funding?
Seed funding is the earliest institutional stage of startup financing, coming after founders' own money and before a Series A round. The capital is meant to get a company from an idea or prototype to early proof that customers want the product, often called product-market fit.
Typical seed rounds today range from a few hundred thousand dollars to around $5 million, raised from angel investors, seed-focused venture funds, and accelerators. At this stage, investors are betting primarily on the founding team and the size of the market, because there is little financial history to analyze.
How a Seed Round Works
Seed investments are structured either as priced equity rounds or, very commonly, as convertible instruments like SAFEs (Simple Agreements for Future Equity) or convertible notes. A convertible instrument delays the valuation debate: the investor's money converts into shares at the next priced round, usually at a discount or subject to a valuation cap.
Founders typically sell 10% to 25% of the company across a seed round. The money buys 18 to 24 months of runway to hit milestones like launching the product, reaching initial revenue, or demonstrating user growth that supports a Series A.
Example
Suppose a two-person startup raises a $2 million seed round on a SAFE with a $10 million post-money valuation cap. If the company later raises a Series A at a $25 million valuation, the seed investors convert at the $10 million cap and end up owning 20% for their $2 million, far more than the 8% they would get at the Series A price. That cap mechanism is how early investors are compensated for taking the earliest risk.
If the startup fails before the next round, which is the most common outcome at this stage, seed investors generally lose their entire investment.
Why It Matters
Seed funding is where the venture capital pipeline begins, and the terms set at seed shape founder ownership and investor returns for every later round. Because failure rates are high, seed investors rely on a power-law portfolio where one or two big winners pay for many losses.
In venture capital interviews, expect questions about how SAFEs convert and how dilution compounds across rounds, since cap table math starts at the seed stage.
