What Is a Cap Table Waterfall and Why Does It Matter Before an Exit?

stellapenso

I keep hearing cap table waterfall mentioned in the context of acquisitions and wanted to actually understand what is a cap table waterfall before assuming it just means dividing the sale price by ownership percentage. Here is what I have pieced together so far, would appreciate anyone correcting me or adding context.

From what I understand, a cap table waterfall is a model showing exactly how the proceeds from a sale or other exit event get distributed across all the different shareholders and option holders, taking into account the specific terms attached to each class of shares rather than just a simple proportional split. This matters because not all shares are equal, preferred shareholders, usually investors, often have liquidation preferences that entitle them to be paid out first, sometimes at a multiple of what they originally invested, before ordinary shareholders, which typically includes founders and employees with common stock, receive anything at all.

The waterfall essentially models this payout order step by step, starting with any debt that needs repaying, then moving through each class of preferred shares in the order their liquidation preferences apply, and finally distributing whatever remains among common shareholders based on their ownership percentage. Participating versus non participating preferred shares change the calculation significantly, since participating preferred shareholders get both their preference paid out and then also share in the remaining proceeds alongside common shareholders, while non participating preferred shareholders have to choose between taking their preference or converting to common shares and taking their proportional share instead, whichever ends up being more valuable to them.

What I am still trying to understand is at what point founders should actually start modeling a cap table waterfall themselves, since it seems like something that matters a lot at exit but is easy to ignore entirely during earlier fundraising rounds when the actual numbers involved can feel abstract and far away.

Has anyone here actually built or reviewed a cap table waterfall model, either before negotiating a round or ahead of an actual exit? Curious how surprising the real numbers were compared to what founders initially expected, and what you wish you had understood earlier about how liquidation preferences actually play out.

Found a fairly clear explanation of this on Entrepreneur Plus while I was reading around the topic, helped me understand the founder side of it a bit better.