The financing decision founders get backwards

Equity feels free. Nothing leaves the bank account and no interest shows up on a statement, so it never registers as a cost. Debt feels expensive for the opposite reason, because you can see the interest every month. That instinct gets the decision backwards.

The biggest cost on a growing company's cap table is not interest. It is the ownership you give away, and what that ownership turns out to be worth years later when you sell. The companies I lend to are late-Seed and Series A B2B businesses raising in the €1 to 3 million range, and they are exactly where this gets expensive. At that stage equity dilutes you by something like 15 to 25 percent a round. Every point of ownership you keep early is a point that compounds, untouched, through every round that follows and out to the exit. It is not complicated arithmetic. It is just that almost nobody sits down and does it before signing.

Compare value at exit, not interest rates

This is the comparison most founders never run. Do not set the interest rate against a notional slice of ownership, because they are not the same kind of number. Set the total cost of each option against the other, measured at the exit you are aiming for.

For debt, the cost is the cash you pay in interest and fees, plus the value of any warrants the lender holds when you exit. Warrants are a small option for the lender to buy shares at today’s price. If the company does well they take some of the upside, though a fraction of what an equity investor would.

For equity the cost is simpler and usually a lot bigger: the ownership you sold, multiplied by what the company is worth at exit.

Run a representative case. A founder raising €1 million of equity at an early valuation gives up a slice of the company that, at a large exit, is worth many times the cash that came in. The same €1 million as a facility costs the interest, the fees, and a much smaller sliver of equity through the warrants. On illustrative numbers the gap between those two paths at a sizeable exit runs into the millions, in the founder’s favour. The figures move entirely with the valuation, the terms, and the exit, so treat them as a way to see the shape of the decision rather than a promise of any outcome.

Equity is the most expensive money a company ever raises. The bill just arrives years later, at exit, paid in someone else’s ownership.

Why it compounds

A single round understates the effect, because dilution multiplies. Ownership you keep at Series A is not spent, it carries forward. The next round dilutes you from a higher base, and the exit prices every retained point against a much bigger number. So a few points saved early are not really a few points. They are a few points compounded across every round and then priced at exit.

In that example, swapping €2 million of a €3 million equity raise for a facility leaves the founders with about five more points of the company after the round. Carry those points through the next raise and out to a large exit and the difference turns into real money. On illustrative assumptions it is several million euro of founder value from a single financing choice. Each million of growth debt at this stage tends to save somewhere around four to five points of dilution, and that saving keeps compounding the further out you go.

None of this works if you cannot carry it

There is a hard caveat, and it is the whole reason this is not a blanket argument that debt beats equity. The dilution saving only counts if the business can actually service the loan. Debt is a fixed cost. If revenue comes in 30 percent under plan the payment does not shrink to match, it still goes out on the same day. So run the comparison at your downside revenue case, not your target. If the company survives that and keeps the dilution advantage, the debt is doing its job. If servicing it starts driving operational decisions, slower hiring, delayed investment, your own time pulled into managing a lender, then the option that looked cheaper has quietly turned into the expensive one.

A simple gut check. Know your monthly cash burn before and after debt service. Take what you are burning now, add the monthly repayment, and look at the new number. Does the runway still work? Can you still hit the milestones that justify your next raise? If yes, the debt is a tool. If not, it is a trap with a tidy spreadsheet attached.

So the financing question is not “how much can I raise?”, and it is not even “debt or equity?”. It is two questions in order. First, which structure keeps me the most ownership for the money I need? That usually points to some debt in the mix. Second, can the business carry that debt through a bad stretch without breaking? Get both answers right and you keep more of what you build. Get the second one wrong and none of the dilution math matters, which is the part founders tend to work out last when they should be working it out first.