TL;DR: Equity dilution refers to the reduction of existing shareholders' ownership percentage that happens when a company issues new shares, reducing existing shareholders' ownership percentage. It is a natural part of raising equity capital, but the degree of dilution, and when it occurs, has a direct impact on how much of the company founders and early investors ultimately own, and make, at exit.
Equity dilution occurs when a company issues new shares, through a funding round, employee stock options, or convertible instruments, and existing shareholders end up owning a smaller percentage of the company as a result. The shares owned by existing investors stays the same, but the total number of shares outstanding increases, as new shares are issued to new investors, so each existing share represents a smaller slice of ownership.
Dilution is not inherently negative. Raising equity capital is a legitimate and often necessary tool for growth. But every equity financing round carries a cost that does not appear as a cash outflow: it reduces percentage ownership and can affect governance and eventual exit proceeds, depending on the company's growth trajectory, share structure, and financing terms.
In general, every new equity issuance imposes dilution on existing investors. If a founder owns 60% of a company before a Series A, and the round requires issuing shares representing 25% of the post-money cap table, the founder's stake may fall to roughly 45%. Repeated across a Series B, Series C, and an employee option pool, founders commonly reach exit owning a fraction of what they originally held, even in successful outcomes.
Common approaches include delaying an equity raise until valuation increases, raising equity at strong valuations, taking on equity only when the valuation step-up justifies the ownership cost, and supplementing with minimally dilutive instruments where possible. Timing matters: raising equity after hitting a major milestone usually means valuation has increased and means giving up less ownership for the same capital.
Flow Capital's venture debt is quite unique in that it is interest-only for the full 36-month term with bullet repayment at maturity. No principal payments during the term means all capital stays in the business. Warrant coverage creates minimal equity dilution, and dilution usually occurs only if the company's value increases above the exercise price.
For comparison: on a $3M loan at 12% interest over 36 months, Flow's interest-only structure requires $30,000 in monthly payments. An equivalent amortising loan would require almost a $120,000 payment per month. Interest only loans can allow the founder to use much more of the capital for growth and the monthly payments are less of a drag on cash flow.
Is dilution always a negative? Not at all. If equity is raised at a strong valuation and deployed to create value well above the dilution cost, the trade-off makes sense. The question is always whether the value created justifies the ownership given up.
What is the difference between dilution and a down round? Dilution occurs in every equity round. A down round is a specific situation where a company raises equity at a lower valuation than its previous round, which increases dilution pressure and may trigger anti-dilution protections for existing investors, depending on the financing documents.
Does venture debt cause dilution? If the lender is given a warrant for the purchase of equity, then yes, it may. However, the dilution is at a much smaller scale than equity. Venture debt typically includes warrant coverage, which gives the lender the right to purchase a small amount of equity at a set price usually equal to the valuation of the company at the time the loan it made. For growth-focused non-bank lenders, the warrant impact on the cap table is typically quite minimal, a small fraction of the dilution caused by an equity round.
How do founders protect against dilution? Raise at strong valuations, minimise unnecessary rounds, be careful and frugal with option pools at each stage (consider reserving them for critical employees as opposed to giving them to all employees, some of whom don’t value the options), and use minimally dilutive capital where possible.
What is a fully diluted cap table? A fully diluted cap table shows ownership percentages assuming all options, warrants, and convertible instruments have been exercised, the most complete picture of who owns what.
Related terms: Cap Table
