When a fund makes money, that money does not split evenly the moment it arrives. It flows through a distribution waterfall: an ordered set of steps deciding who gets paid, how much, and in what sequence. The waterfall is where the headline "80/20" carry split actually gets computed, and its fine print can shift meaningful money between the GP and the LPs.
Most LPs know the slogan, twenty percent to the GP, eighty to the LPs. Far fewer understand the steps in between, which is exactly where the negotiation and the surprises live.
The four steps
A standard waterfall runs in four tiers. First, return of capital: LPs get back everything they contributed, including fees. Second, the preferred return, or hurdle: LPs earn a minimum return, often 8 percent, before the GP shares in profits. Third, the GP catch-up: the GP takes a large share of the next distributions until it has caught up to its full carry percentage of profits so far. Fourth, the split: everything beyond that divides 80/20.
The order is the point. LPs are made whole and paid their hurdle before the GP earns real carry, which is what makes the hurdle a genuine protection rather than a formality. Remove or weaken any of these steps and the economics tilt toward the GP.
European versus American waterfalls
A European, or whole-fund, waterfall computes carry across the entire fund: the GP earns carry only once the LPs have their total capital and hurdle back on the whole portfolio. An American, or deal-by-deal, waterfall computes it on each deal as it exits, which pays the GP carry earlier, before the fund as a whole has returned capital.
The difference is real money and real risk. Deal-by-deal carry can overpay a GP that hits early winners and later stumbles, which is why clawback provisions exist to recover carry paid on gains that a fund's later losses erase. LPs generally prefer the whole-fund structure, and where they accept deal-by-deal, they should insist on a robust clawback.
Why it is negotiable
The hurdle rate, the catch-up percentage, the waterfall type and the clawback are all terms, not laws. In a competitive fundraise a large or anchor LP can push on them, and the resulting structure can be worth more to the LP over a fund's life than a modest difference in gross performance.
This is why reading a fund means modelling its waterfall, not just admiring its track record. Two funds with identical gross returns can deliver noticeably different net returns to LPs purely because of how their waterfalls are built.