Valuation and Dilution, in Plain Language

Of all the parts of investing that feel like a foreign language, valuation is the one new investors most often nod along to without quite following. Yet underneath the jargon, pre-money, post-money, the option pool, it is simple arithmetic, and the arithmetic decides what your money actually buys. Getting comfortable with it is the difference between agreeing to a number because it sounded reasonable and knowing exactly what you own when the round closes.

Pre-money, post-money, and your slice

Start with the two words that cause the most confusion. Pre-money is what the company is valued at before the new money goes in. Post-money is simply that plus the amount raised. And your ownership is just the cheque you write divided by the post-money value. That is the whole engine. Everything else, the share price, the number of shares, the legal language, is bookkeeping on top of this one relationship: the post-money valuation is the denominator, and your investment over it is your slice.

The option pool shuffle

The one piece of this that trips up almost every beginner is the option pool, the shares set aside for future employees. The detail that matters is where it comes from. By convention, a new or topped-up pool is carved out of the pre-money valuation, which means the founders and existing shareholders absorb its dilution before the new investor's percentage is even calculated. A larger pool therefore lowers the effective price the existing holders are getting, even though the headline pre-money number does not change. As the incoming investor you are usually on the comfortable side of this, but you should understand it, because a pool that is set unusually large is a quiet way of paying a lower price than the headline suggests.

Why a higher valuation is not always better

New investors often assume that a lower valuation is always good for them and a higher one always good for the founder, and stop thinking there. The first half is roughly true, your entry price sets your return, and paying less for the same company means more upside. But the second half is a trap for everyone. A valuation pushed too high sets a bar the company must clear at the next round, and a team that cannot grow into it faces a down round, where new money comes in at a lower price, badly diluting and demoralising everyone, founders and early investors alike. A price that is fair and leaves room is healthier for the investor than a trophy number that loads the next round with risk.

This is where valuation connects back to everything earlier in the series. A price is only sensible in light of the real unit economics and the size of the outcome the market can support, because under the power law what you ultimately care about is owning enough of a company that becomes very large. Entry price and ownership are the two levers that turn a great company into a great investment, and valuation is simply where you set them.

The takeaway

Strip away the jargon and valuation is one equation: post-money equals pre-money plus the raise, and your ownership is your cheque over the post-money. Watch the option pool, because where it is carved from quietly changes the real price. And resist the instinct that higher is simply better; the right valuation is one the company can grow past, so the next round lifts everyone instead of resetting them. An investor who can do this arithmetic in their head, and who reads a valuation against the business rather than against their hopes, has turned the most intimidating part of a deal into one of the most controllable.

It is the discipline EvoScale Capital brings to pricing every B2B round, anchoring valuation to the real economics rather than the momentum in the room, alongside people who have seen how these numbers play out a round or two later. The cleanest version of this judgement still has to be written down, which is the next subject: the term sheet, and the handful of terms in it that actually matter.