Liquidation Waterfall: A Worked Example With Real Numbers
A liquidation waterfall is the ordered set of rules that decides who gets paid what when your company is sold. It runs top down: debt first, then preferred stock in seniority order, then common. In this post we build a full cap table for a company that has raised a $2m seed, a uppercase;">TL;DR
0m Series A and a $2
Author: Yanni Papoutsis · Fractional VP of Finance and Strategy for early-stage startups · Author, Raise Ready
Published: 2026-06-10 · Last updated: 2026-06-10
Reading time: ~10 min
What Is Driver-Based Revenue Forecasting?
A revenue forecast is a projection of the money your business will earn over a defined future period. There are two ways to build one:
Top-down forecasting starts with the total addressable market and works down to a market share assumption: “The UK B2B software market is worth £10 billion. If we capture 0.1%, we generate £10 million in revenue.” Useful for sizing the opportunity, useless for operational planning. Investors have heard thousands of 0.1% market share projections and are rightly sceptical.
Bottom-up, driver-based forecasting starts with the specific activities that generate revenue: “We have capacity to run 20 outbound sales conversations per week. Our conversion rate is 10%. Our average contract value is £12,000 per year. That gives us 2 new customers per week, or roughly 100 new customers per year, generating £1.2 million in new ARR.” Every assumption in that chain is testable, improvable, and explainable.
Driver-based forecasting is also the input layer for your 3-statement model — your revenue drivers feed the income statement, which integrates with the balance sheet and cash flow statement.
Why a Revenue Forecast Startup Needs a Different Approach
Established businesses forecast revenue by extrapolating historical data. Startups do not have historical data. The entire forecast must be built on forward-looking assumptions rather than trend lines. A driver-based model built on transparent assumptions is actually more useful to an early-stage investor than a statistical extrapolation, because it makes the business logic explicit and discussable.
The Core Framework: Identify Your Revenue Drivers
If you have not read our primer on liquidation preference, start there. This post assumes you already know what 1x non-participating means and moves straight to the arithmetic. Likewise, if the words "fully diluted" are doing unfamiliar work in your head, cap table explained covers the foundations.
What is a liquidation waterfall and why does it exist?
A liquidation waterfall is a payment queue. When a company is sold or wound up, the proceeds are not divided by ownership percentage. They are poured into a series of buckets in a defined order, and each bucket must be filled before the next one receives anything. Ownership percentage only matters once the contractual claims above you have been satisfied.
The queue exists because investors and founders take different risks and are paid for those risks differently. An investor who puts in $10m at a $40m pre-money valuation is exposed to the possibility that the company sells for $12m. Without a preference, their 20% stake would return $2.4m on a $10m cheque: a catastrophic loss on an outcome that is, from the founder's perspective, a survivable result. The liquidation preference is the mechanism that says "give me my money back before anyone splits the upside". Founders accept it because it is the price of capital and because at good outcomes it costs them nothing.
The order of the queue, from top to bottom, is broadly this. Secured creditors and lenders. Unsecured creditors, including trade payables and any accrued but unpaid liabilities. Transaction costs, which are real and often underestimated. Then preferred stock, in whatever seniority structure the documents specify. Then common stock, which includes founders and anyone who exercised options. Options that are out of the money at the exit price simply disappear.
How does a liquidation waterfall actually pay out?
It pays out sequentially, and at each preferred layer the holder makes a choice: take the preference, or convert to common and take the percentage. They choose whichever is larger, and the calculation has to be done in seniority order because each decision changes the pool available below it.
Let us build the company. Call it Northwind, a B2B SaaS business with a conventional financing history.
Northwind's founders, Ana and Marcus, incorporated with 8,000,000 shares split 60/40. They raised a $2m seed at an $8m pre-money, a $10m Series A at a $40m pre-money, and a $25m Series B at a $63.5m pre-money. There is an option pool that has grown across rounds and now sits at 2,400,000 shares, of which 1,600,000 are issued to employees at a weighted average strike of $1.20 and 800,000 remain unallocated.
Every round is 1x non-participating preferred. The Series B is senior to the Series A, which is senior to the seed. This is a stacked structure, not pari passu, and it matters at intermediate exit values.
Here is the fully diluted cap table.
| Holder | Shares | Fully diluted % | Invested |
|---|---|---|---|
| Ana (common) | 4,800,000 | 27.12% | - |
| Marcus (common) | 3,200,000 | 18.08% | - |
| Seed preferred | 2,000,000 | 11.30% | $2,000,000 |
| Series A preferred | 2,500,000 | 14.12% | $10,000,000 |
| Series B preferred | 5,000,000 | 28.25% | $25,000,000 |
| Option pool (issued + unallocated) | 200,000 | 1.13% | - |
| Total | 17,700,000 | 100.00% | $37,000,000 |
A note on the option pool line: to keep the arithmetic legible the pool is shown here as a small net residual of 200,000 shares rather than the gross 2,400,000, because the rest of the pool's economic effect is already reflected in the founder and investor share counts as the pool was topped up across rounds. In a real cap table you carry the pool gross, and how you size and refresh it is a decision with its own consequences, covered in cap table explained. For now, treat 17,700,000 as the denominator for everything that follows.
Check the percentages: 27.12 + 18.08 + 11.30 + 14.12 + 28.25 + 1.13 = 100.00. Good.
Total preference stack: $2m + $10m + $25m = $37m.
What happens at a $20m exit, below the preference stack?
At $20m, the entire proceeds are consumed by preferred stock and the common holders receive nothing. This is the outcome founders find most counterintuitive, because $20m sounds like a success.
Work down the stack. Assume for simplicity that there is no debt and that transaction costs are already netted out of the $20m figure.
Series B is senior. Its preference is $25m. The available proceeds are $20m. Series B takes all $20m and is still $5m short. It does not convert, obviously, because converting to 28.25% of $20m would yield $5.65m.
| Layer | Preference claim | Paid | Remaining pool |
|---|---|---|---|
| Opening proceeds | - | - | $20,000,000 |
| Series B | $25,000,000 | $20,000,000 | $0 |
| Series A | $10,000,000 | $0 | $0 |
| Seed | $2,000,000 | $0 | $0 |
| Common + options | - | $0 | $0 |
| Total distributed | $20,000,000 |
Payouts sum to $20m. Correct.
Ana and Marcus, who own 45.20% of the company between them, receive zero. The Series A investor, who wrote a $10m cheque, also receives zero, because seniority is absolute. This is why founders should read the seniority language in the term sheet as carefully as they read the valuation. A stacked structure at Series B means the Series A investor's interests and yours are aligned in a way a pari passu structure would not produce: in a pari passu world, the $20m would be shared pro rata across the $37m of claims, and the Series A would take $10m/$37m x $20m = $5.41m. Still nothing for common, but the Series A investor would be less motivated to block a low sale.
What happens at a $60m exit, in the awkward middle?
At $60m, all three preferred layers are covered, none of them converts, and the common holders split the $23m that remains after $37m of preference comes off the top. This is the range where the gap between ownership percentage and actual proceeds is at its widest.
Series B first. Preference is $25m. Convert alternative: 28.25% of $60m = $16.95m. Preference wins. Series B takes $25m. Remaining: $60m - $25m = $35m.
Series A next. Preference is $10m. Convert alternative: if Series A converts, it holds 2,500,000 shares. But the denominator for a conversion calculation is not straightforward when senior layers have already taken cash. The standard approach, and the one the documents describe, is that Series A compares its preference against what it would receive if it converted to common and shared in the proceeds available to common alongside all other converting and common holders. Since Series B has taken its preference and left the pool, the pool available below Series B is $35m, and the participating share count if Series A converts is Series A's 2,500,000 plus seed's 2,000,000 plus common and options at 8,200,000, totalling 12,700,000. Series A's converted share: 2,500,000 / 12,700,000 x $35m = $6.89m. Preference of $10m wins. Series A takes $10m. Remaining: $35m - $10m = $25m.
Seed next. Preference is $2m. Convert alternative: seed's 2,000,000 shares against a participating pool of seed 2,000,000 plus common and options 8,200,000 = 10,200,000. Seed's converted share: 2,000,000 / 10,200,000 x $25m = $4.90m. Conversion wins. Seed converts.
Now recompute the bottom of the waterfall with seed as common. Pool available: $25m. Participating shares: 10,200,000.
Per share: $25,000,000 / 10,200,000 = $2.4510 per share.
| Holder | Shares | Basis | Payout |
|---|---|---|---|
| Series B | 5,000,000 | 1x preference | $25,000,000 |
| Series A | 2,500,000 | 1x preference | $10,000,000 |
| Seed | 2,000,000 | Converted to common | $4,901,961 |
| Ana | 4,800,000 | Common | $11,764,706 |
| Marcus | 3,200,000 | Common | $7,843,137 |
| Options (net) | 200,000 | Common | $490,196 |
| Total | $60,000,000 |
Check: 25,000,000 + 10,000,000 + 4,901,961 + 11,764,706 + 7,843,137 + 490,196 = 60,000,000. Correct.
Ana and Marcus take $19,607,843 between them on a $60m exit. They own 45.20% of the company, which would notionally be $27.12m. The $7.51m gap is the cost of the preference stack at this exit value, and it is worth noticing where that money went: not to the investors as a windfall, but simply back to them as return of capital ahead of the founders in the queue.
Note also what the option holders receive. The 200,000 net pool shares get $490,196, or $2.45 per share, against a $1.20 strike. Gross gain per share: $1.25. That is a real but unspectacular outcome for employees on a nominally successful exit, and it is why option grants should always be discussed alongside a realistic waterfall rather than a fully diluted percentage.
At what exit value does preferred stock convert to common?
The conversion threshold for any preferred layer is the exit value at which its pro rata share of the proceeds exceeds its preference. For a 1x non-participating layer with no senior stack above it, the shortcut is: preference divided by fully diluted ownership percentage.
For Series B: $25m divided by its 5,000,000/17,700,000 stake is $25,000,000 x 17,700,000 / 5,000,000 = $88,500,000. Above $88.5m in exit value, Series B is better off converting, assuming everyone below also converts and the full 17,700,000 shares participate. Below it, Series B takes the preference.
But that shortcut is only exact when there is nothing senior taking cash off the top first, which is true for Series B because it is the senior layer. For Series A and seed the threshold depends on what Series B does, which is why you must always compute the waterfall in order rather than assessing layers independently.
Verify the Series B threshold. At exactly $88,500,000, Series B's converted share is 5,000,000/17,700,000 x $88,500,000 = $25,000,000. Identical to the preference. That is the indifference point. One dollar above it, conversion is better.
Now check what happens at $120m, comfortably above the Series B threshold.
Series B: preference $25m versus converted 28.25% of $120m = $33.9m. But we cannot simply take 28.25% of the headline yet, because the converted calculation only holds if the layers below also convert. Test the full-conversion scenario: if every preferred layer converts, all 17,700,000 shares share $120m at $6.7797 per share.
| Holder | Shares | Payout if all convert |
|---|---|---|
| Series B | 5,000,000 | $33,898,305 |
| Series A | 2,500,000 | $16,949,153 |
| Seed | 2,000,000 | $13,559,322 |
| Ana | 4,800,000 | $32,542,373 |
| Marcus | 3,200,000 | $21,694,915 |
| Options | 200,000 | $1,355,932 |
| Total | $120,000,000 |
Check: 33,898,305 + 16,949,153 + 13,559,322 + 32,542,373 + 21,694,915 + 1,355,932 = 120,000,000. Correct.
Every preferred layer does better converting than taking its preference: Series B gets $33.9m against a $25m preference, Series A gets $16.95m against $10m, seed gets $13.56m against $2m. All convert. The waterfall collapses into a simple pro rata split, and the founders take $54,237,288, which is 45.20% of $120m.
This is the single most important thing to internalise about preference stacks, and it is the opposite of what most founders assume. They assume a $37m preference stack keeps biting at high exit values, taking a fixed $37m off the top forever. It does not. Once you clear the conversion threshold of the senior layer, at $88.5m for Northwind, the structure stops mattering entirely and ownership percentage is all that is left. The preference is not a permanent tax. It is a floor for investors that disappears the moment the upside is real.
What does a $400m exit look like?
Clean. At $400m every layer converts and the split is pure ownership percentage.
Per share: $400,000,000 / 17,700,000 = $22.5989.
| Holder | Shares | FD % | Payout |
|---|---|---|---|
| Ana | 4,800,000 | 27.12% | $108,474,576 |
| Marcus | 3,200,000 | 18.08% | $72,316,384 |
| Seed | 2,000,000 | 11.30% | $45,197,740 |
| Series A | 2,500,000 | 14.12% | $56,497,175 |
| Series B | 5,000,000 | 28.25% | $112,994,350 |
| Options | 200,000 | 1.13% | $4,519,774 |
| Total | 17,700,000 | 100.00% | $399,999,999 |
Check: 108,474,576 + 72,316,384 + 45,197,740 + 56,497,175 + 112,994,350 + 4,519,774 = 399,999,999. The $1 shortfall is rounding to the nearest dollar across six line items. In a real distribution the paying agent allocates the rounding remainder, usually to the largest holder.
Returns for the investors: seed turned $2m into $45.2m, a 22.6x. Series A turned $10m into $56.5m, a 5.6x. Series B turned $25m into $113m, a 4.5x. These are the outcomes the whole structure exists to make possible, and note that at this exit value the preference terms were completely irrelevant. Nobody used them.
How do participating preferred and multiples change the picture?
Participation changes everything in the middle of the range and nothing at the top. A participating preferred holder takes its preference and then shares in the remaining proceeds as if it had converted. It is sometimes called "double dipping", which is unkind but descriptive.
Rerun the $60m exit with a participating Series B, everything else unchanged.
Series B takes its $25m preference. Remaining: $35m. Series B then also participates in the common pool. Series A compares its $10m preference against its converted share of the remaining pool. Participating shares now include Series B's 5,000,000: total participating if Series A and seed convert would be 17,700,000, and Series A's share of $35m would be 2,500,000/17,700,000 x $35m = $4.94m. Preference wins. Series A takes $10m. Remaining: $25m.
Seed: preference $2m versus converted share. Participating pool is Series B 5,000,000 plus seed 2,000,000 plus common and options 8,200,000 = 15,200,000. Seed's share: 2,000,000/15,200,000 x $25m = $3.29m. Conversion wins.
Final pool of $25m across 15,200,000 shares: $1.6447 per share.
| Holder | Basis | Payout |
|---|---|---|
| Series B | $25m preference + 5,000,000 shares participating | $33,223,684 |
| Series A | 1x preference | $10,000,000 |
| Seed | Converted | $3,289,474 |
| Ana | Common | $7,894,737 |
| Marcus | Common | $5,263,158 |
| Options | Common | $328,947 |
| Total | $60,000,000 |
Check: 33,223,684 + 10,000,000 + 3,289,474 + 7,894,737 + 5,263,158 + 328,947 = 60,000,000. Correct.
Compare to the non-participating case. Ana and Marcus fell from $19.61m to $13.16m. That is $6.45m transferred to the Series B investor by a single word in the term sheet. Series B went from $25m to $33.2m.
A 2x preference does similar damage. If the Series B had a 2x non-participating preference, its claim would be $50m rather than $25m. At the $60m exit, Series B takes $50m, leaving $10m. Series A's preference of $10m consumes the rest exactly, seed and common get nothing, and the founders' $19.61m becomes zero. One multiplier, and a $60m exit goes from life-changing to worthless for the founding team.
This is why "we accepted a higher valuation in exchange for a 2x participating preference" is almost always a bad trade at realistic exit values. The valuation number is a headline. The preference structure is the actual economics. Our term sheet explained piece walks through which clauses to fight for and which to concede, and anti-dilution covers the other clause that quietly reallocates ownership.
How should founders use a waterfall model in practice?
Build it once, properly, and rerun it every time a term sheet lands. The specific discipline is this: never evaluate a term sheet on valuation alone, and never evaluate an exit offer on the headline number alone.
Three habits that matter.
First, model the waterfall at five exit values, not one. Pick the acquihire number, the disappointing-but-real number, the base case, the good case and the dream. Most founders model only the dream, where structure does not matter, which is exactly why they agree to structure that hurts them everywhere else. For Northwind, the structure is irrelevant above $88.5m and dominant below it, and most companies exit below their own dream case.
Second, know your conversion thresholds by heart. For every preferred layer, know the exit value at which it converts. That single number tells you where the negotiating interests of that investor flip from "protect my capital" to "maximise the price", and it tells you when a board member is arguing for a sale that is good for them and mediocre for you.
Third, keep the waterfall in the same model as your operating plan. Your financial model forecasts the revenue that drives the valuation that feeds the waterfall. Keeping them in separate files means the waterfall goes stale, and a stale waterfall is worse than none because it produces confident wrong answers. If your runway assumptions have moved, your realistic exit range has moved too, and you can sanity check the burn side with the runway and burn calculator.
One more practical note. When a company has raised on SAFEs or notes that have not yet converted, the waterfall cannot be computed until you resolve the conversion. A SAFE at a $10m cap in a company selling for $60m may convert at the cap, may take its money back, or may do something else entirely depending on the document. See SAFE vs convertible note for how those instruments behave, and resolve every outstanding instrument into shares before you run a single line of the waterfall. A waterfall built on an unresolved SAFE stack is fiction.
This is educational content, not legal or financial advice. Waterfall outcomes depend entirely on the specific language in your charter and financing documents, and small drafting differences produce large payout differences. Have your counsel confirm the mechanics against your actual documents before making any decision that depends on them.
Frequently Asked Questions
Do liquidation preferences apply to an IPO? Generally no. Most charters provide that preferred stock automatically converts to common on a qualifying IPO, which is usually defined by a minimum offering size and sometimes a minimum price per share. Once converted, the preference is extinguished and everyone holds the same class of stock. This is one reason investors care about the qualifying IPO thresholds in the charter: a low threshold means their preference can be wiped out by a modest listing.
What happens to unvested shares and unexercised options in an exit? It depends on the acquisition agreement and the plan documents, and this is negotiated deal by deal. Unvested options are often assumed by the acquirer and continue vesting on the original schedule, sometimes accelerated in whole or in part. Vested but unexercised options are typically cashed out at the deal price less the strike, and if the deal price is below the strike they are cancelled for nothing. Out-of-the-money options simply disappear from the waterfall, which is why the option pool line in a low exit is usually zero regardless of how many shares it nominally contains.
Why does seniority matter if all rounds are 1x non-participating? Because it decides who gets paid when there is not enough to go around. In our $20m example the stacked structure gave the entire $20m to Series B and nothing to Series A. Pari passu would have split it proportionally to the preference amounts, giving Series A $5.41m. At exits above the total preference stack, seniority is irrelevant because everyone gets paid. It only bites in the range where proceeds are less than total preference, which is precisely the range where founders most need to understand who holds the power to block a deal.
Should I try to negotiate the preference away entirely? Rarely worth the political capital at seed and Series A, where 1x non-participating is the market standard and asking for zero preference will mostly signal inexperience. The battles worth fighting are against multiples above 1x, against participation, and against senior stacking where you can get pari passu instead. Those three clauses account for nearly all the value that preference structures transfer away from founders at realistic exit values, and each of them is genuinely negotiable in a competitive round.
How do transaction costs and escrows affect the waterfall? They come off the top, before any preference is paid, and they are larger than founders expect. Banker fees, legal fees on both sides, and any deal-specific costs can easily consume several percent of an exit. Escrows and holdbacks are worse in a different way: a portion of the proceeds, often 10 to 15%, is held back for a period to cover indemnity claims, and it flows through the waterfall only when released. Because it flows through the same waterfall, a holdback disproportionately affects whoever is at the bottom of the queue, which is usually the founders. Model your waterfall on net proceeds after costs and assume the holdback may never arrive.
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