Why the Economics Behind the Valuation Matter
A term sheet is not primarily a document about valuation. It is a document about the allocation of proceeds at exit and the distribution of power in the boardroom. Founders who focus only on the pre-money valuation headline are missing the mechanisms that will determine what they actually receive when they sell the company or list it on a public market.
This matters most in scenarios where the exit value is moderate rather than exceptional. At a 10x return on invested capital, most economic terms become largely academic because the proceeds are sufficient to satisfy everyone generously. In the scenarios that are statistically far more common — exits at 2-4x the last round valuation, down rounds, or sales under financial pressure — the economic terms buried in the term sheet can dramatically change the distribution of proceeds between investors and founders.
This article covers four economic terms in practical depth: liquidation preferences, anti-dilution provisions, pro-rata rights, and preference stacking. Each section includes worked numerical examples.
Liquidation Preferences: Three Variants
A liquidation preference gives investors the right to receive a specified multiple of their investment before common shareholders (founders, employees with options) receive anything. The two most significant variants are non-participating and participating preferred, with multiple preferences adding a further dimension.
1x Non-Participating Preferred
The most founder-friendly standard. The investor receives back 1x their investment first; then, if there is anything left, the remaining proceeds are distributed to all shareholders on an as-converted (pro-rata ownership) basis. At a high enough exit, the investor will "convert" their preferred to common and participate as a common shareholder — because the as-converted proceeds exceed the preference.
1x Participating Preferred
The investor receives 1x their investment first (the preference), and then also participates in the remaining proceeds alongside common shareholders on an as-converted basis. This is a "double dip": the investor gets both the preference and the upside. It is less common in the UK market than the US, but it appears in some bridge rounds and in deals where investors have significant negotiating leverage.
2x Preferred
The investor receives 2x their investment before any common shareholders receive anything. Rare in standard venture deals but appears in growth equity, secondary transactions, and occasionally in restructuring situations.
The following example uses a company that has raised £5m at a £20m pre-money valuation (25% investor ownership) to show the impact at two exit scenarios.
At a £20m exit, the difference between 1x non-participating and 1x participating is £0 for the founder — both structures give founders £11.25m. At a £60m exit, participating preferred costs founders £3.75m relative to non-participating. The harm from participating preferred is greatest at moderate exits (3-6x money) and diminishes at very high exit multiples as the preference becomes immaterial relative to total proceeds.
"Headline valuation is only one number. The waterfall matters as much at exit as the pre-money valuation at investment. A founder who achieves a 20% higher valuation but accepts participating preferred may end up with less money in their pocket at a moderate exit."
Anti-Dilution Provisions: Full Ratchet vs Weighted Average
Anti-dilution provisions protect investors against down rounds — situations where the company raises money at a lower valuation than the previous round. Without anti-dilution, an investor who bought shares at £1 per share in a £20m round would find their economic position unchanged by a down round, but their percentage ownership would be diluted. Anti-dilution provisions adjust the investor's conversion price downward, giving them more shares for the same investment to partially compensate for the dilution.
The two main variants are full ratchet and broad-based weighted average. The difference between them is enormous in practice.
Full Ratchet Anti-Dilution
The investor's conversion price is reset to the price per share in the new round, regardless of how much money is raised at that price. If even a single share is sold at a lower price, the investor's entire holding reprices to that lower level. This is the most aggressive form and is heavily founder-unfriendly. It can result in founders being wiped out in a down round even when the company itself is viable.
Round A: £5m raised at £1/share (5m shares issued). Founder owns 15m shares (75%). Total shares: 20m.
Down Round B: Company must raise £2m to survive. Investors will only invest at £0.50/share.
Full ratchet: Series A conversion price resets to £0.50. Series A investors now effectively own 10m shares (double their original 5m). New shares issued: 4m.
New cap table: Series A 10m / Series B 4m / Founders 15m. Total: 29m.
Founder dilution: from 75% to 51.7% — not catastrophic, but in practice full ratchet provisions often interact with option pool provisions to be much more severe.
Broad-Based Weighted Average Anti-Dilution
The conversion price adjustment is calculated using a formula that takes into account not just the new price but the volume of new shares being issued relative to the total capitalisation. The more shares are issued at the lower price, the bigger the adjustment; fewer shares at a lower price results in a smaller adjustment. The formula is:
New Conversion Price = Old CP × (A + B) ÷ (A + C)
Where A = total shares outstanding before the new round; B = shares issuable for the full amount of the new round at the old conversion price; C = shares actually issued in the new round.
Old CP: £1.00. A = 20m shares. New round raises £2m at £0.50 (C = 4m shares). B = £2m ÷ £1.00 = 2m shares.
New CP = £1.00 × (20m + 2m) ÷ (20m + 4m) = £1.00 × 22/24 = £0.917.
Series A investors' shares convert at £0.917, so they receive 5m ÷ £0.917 = 5.45m effective shares (not 10m as in full ratchet).
Founder dilution is dramatically smaller under BBWA than under full ratchet.
Pro-Rata Rights
Pro-rata rights (also called pre-emption rights on new issues in UK terminology) give existing investors the right to invest in future funding rounds at the same price as new investors, up to the amount required to maintain their percentage ownership. For example, an investor owning 20% of the company has the right to subscribe for 20% of any new round.
Investors value pro-rata rights highly because they allow them to protect their ownership position in subsequent rounds and to increase their exposure to their best-performing portfolio companies. When a company is on a strong growth trajectory, the opportunity to "double down" at the new round price is extremely valuable — the investor is effectively buying more equity in a company with de-risked validation.
From a founder's perspective, pro-rata rights can be problematic. A lead investor from Series A exercising their pro-rata right in the Series B round takes up capacity that could be allocated to a new strategic investor. Founders should push back on unlimited pro-rata rights and instead negotiate: a cap on the pro-rata amount (e.g. each investor can maintain but not increase their ownership); exclusion of pro-rata rights in strategic rounds where bringing in a corporate investor is important; or sunset provisions (pro-rata rights expire if not exercised within a specified period after the round is announced).
Preference Stacking: Multiple Rounds
A company that has raised three consecutive rounds — Series A, Series B, and Series C — will typically have preferred shareholders from each round with their own liquidation preferences. In a liquidation waterfall, these preferences stack on top of each other, and the order of priority matters. Understanding this is essential for founders approaching a late-stage exit or a distressed sale.
In this scenario, if the company is sold for £40m, the waterfall operates as follows. Series C receives its £20m preference first (most recent investors typically have liquidation seniority, though this must be checked — pari passu arrangements are also common). Series B receives its £10m. Series A receives £5m. That accounts for the full £35m in preferences. The remaining £5m is then distributed to all shareholders on an as-converted basis — founders receive their percentage of that residual.
If the company is sold for £30m, the preferences cannot all be satisfied. Series C receives £20m, Series B receives £10m, and Series A receives nothing. Founders receive nothing. This is the "liquidation preference overhang" problem that affects many companies that have raised multiple rounds at rising valuations during 2020-2022 and are now facing exit prices below the total invested capital.
Key Takeaways
- Pre-money valuation is only one input into founder proceeds at exit. The liquidation preference, anti-dilution provision, and preference stacking determine how proceeds are distributed.
- 1x non-participating preferred is the most founder-friendly standard. Participating preferred is a "double dip": the investor takes both the preference and pro-rata participation in residual proceeds.
- The harm from participating preferred is greatest at moderate exits (3-6x invested capital) and diminishes at high multiples.
- Broad-based weighted average anti-dilution is the market standard and is vastly more founder-friendly than full ratchet. Reject full ratchet without exception.
- Pro-rata rights are valuable to investors and should be negotiated carefully by founders: seek caps, exclusions for strategic rounds, and sunset provisions.
- Preference stacking creates a liquidation overhang in multi-round companies. The total preferred capital must be satisfied before founders receive anything; model this explicitly for every realistic exit scenario.
- Build a waterfall model before signing any term sheet. The numbers at 1-3x exit will reveal the true economics far more clearly than the headline valuation.
