What it means
Seed rounds sit between the founders' own money, sometimes with help from friends and family, and an institutional Series A. The company at this stage usually has a working prototype or early revenue but not yet the consistent growth that later stage investors require.
Founders raise seed money because building a product and reaching customers takes cash long before the business generates any, and banks will not lend against an idea with no assets and no trading history. Equity investors accept that risk in exchange for a share of the upside if the company succeeds.
Pricing a seed round rests on two figures: the pre money valuation, which is what the business is judged to be worth before the new money arrives, and the post money valuation, which is simply pre money plus the investment. The investor's percentage is the amount invested divided by the post money valuation.
Not every seed round sets a valuation immediately. Convertible instruments such as a convertible note or a simple agreement for future equity let investors put money in now and convert it into shares at the next priced round, usually with a discount or a valuation cap as compensation for early risk.
The most important discipline at seed stage is runway, meaning how many months the money lasts at the current net burn rate. Investors expect a seed round to buy roughly eighteen to twenty four months, enough time to hit the milestones that make the next round raiseable rather than merely necessary.
In practice
Real-world examples.
Example
A logistics software team with two paying pilot customers raises $1,500,000 at a $6,000,000 pre money valuation, giving investors 20% of the post money $7,500,000. The money funds four engineers and a salesperson for twenty months.
Example
A consumer skincare brand raises $600,000 on a convertible note with a 20% discount and a $5,000,000 valuation cap. The note converts at the Series A eighteen months later, and the cap means the seed investors receive shares at a materially lower effective price than the new investors.
Example
A hardware startup raises $2,500,000 in seed funding but underestimates tooling costs and reaches month twelve with only four months of cash left. It is forced into a bridge round on weaker terms, which dilutes the founders more than a larger initial raise would have.
Think of it
“Seed funding is the first money to plant the business idea-capital to grow from nothing to something.
Formula
Calculation
Post money valuation = pre money valuation + investment amount. Investor ownership = investment amount / post money valuation. Runway in months = cash raised / monthly net burn.
A software startup agrees a seed round of $2,000,000 at a pre money valuation of $8,000,000. Post money valuation = $8,000,000 + $2,000,000 = $10,000,000, and the investors' stake = $2,000,000 / $10,000,000 = 20%. The founders' combined holding falls from 100% to 80%.
Working it through in shares, the founders hold 4,000,000 shares before the round, so the price per share is $8,000,000 / 4,000,000 = $2.00. The investors buy $2,000,000 / $2.00 = 1,000,000 new shares, giving a total of 5,000,000 shares, and 1,000,000 / 5,000,000 = 20%, which confirms the ownership figure.
On runway, if the company burns $80,000 a month net of revenue, the round buys $2,000,000 / $80,000 = 25 months. That is comfortable, though founders should assume the next raise takes four to six months of effort, so the real deadline for hitting milestones is closer to month nineteen.Case study
Seen in the real world.
The following is an illustrative and entirely fictional example. Mapleford Systems, an invented startup building scheduling software for dental practices, had eleven paying customers and $9,000 of monthly recurring revenue when it approached investors. The founders initially wanted $1,000,000 to keep dilution low.
Their fictional lead investor pushed back with arithmetic rather than opinion. At a planned net burn of $80,000 a month, $1,000,000 would last twelve and a half months, and since raising a Series A typically absorbs five months of founder attention, Mapleford would be fundraising again from month seven with barely two quarters of progress to show. The round was resized to $2,000,000 at an $8,000,000 pre money valuation, giving investors 20% of a $10,000,000 post money company.
The extra $1,000,000 bought twelve more months, which the team used to reach 140 customers before opening Series A conversations. The illustration's point is that the cheapest looking round is not always the least dilutive one, because a rushed follow on raise from a position of weakness usually costs far more ownership than the money saved at seed.
Watch out
Common mistakes.
- Raising the smallest amount that avoids dilution, then running short of runway and having to accept much worse terms in a rushed bridge round.
- Confusing pre money and post money valuation, which can quietly cost founders several percentage points of ownership in the paperwork.
- Ignoring the option pool, since investors usually require it to be created from the pre money valuation, meaning the founders alone absorb that dilution.
Questions
People also ask.
How much should a company raise at seed stage?
Enough for roughly eighteen to twenty four months of runway plus the milestones needed to make the next round attractive, rather than a figure picked to match a valuation target.
What is the difference between seed funding and a Series A?
Seed money funds finding a repeatable product and first customers, while a Series A funds scaling a model that is already showing consistent traction.
Does taking seed funding mean losing control of the company?
Not usually at this stage, since seed investors commonly take 15% to 25% and a board observer seat rather than voting control, though the specific rights in the shareholders' agreement matter more than the percentage.
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