Carried Interest Calculator

What carried interest is

Carried interest, almost always shortened to carry, is the slice of an investment fund's profits that the people running the fund keep for themselves as their reward for generating those profits. It is how the managers of private equity, venture capital, and hedge funds get paid for performance, and the standard slice is 20% of the profits.

The point of it is alignment. Because the managers earn their real money only when the fund does well, their interests are tied to those of the investors who put up the capital: everyone wins together, or not at all. This calculator estimates the carry from a few figures, the fund's starting and ending value, how long it was held, the hurdle rate, and the carry percentage, and shows both the fund's overall return and the carry the managers would collect.

The players, and "2 and 20"

To make sense of carry, it helps to know the two sides of a fund. The general partner, or GP, is the manager: the firm that creates the fund, raises the money, chooses the investments, and runs everything. The limited partners, or LPs, are the investors: they supply the bulk of the capital but stay hands-off. Carried interest is the GP's share of the profits; the LPs keep the rest.

This sits inside the classic fee arrangement known as "2 and 20." The 20 is the carried interest, 20% of the fund's profits. The 2 is a separate annual management fee, around 2% of the money in the fund, which the GP charges every year to cover the cost of running the operation, win or lose. The two are quite different in character: the management fee is a steady wage for keeping the lights on, while carried interest is the performance bonus that only materialises if the fund actually makes money. This tool is about that second part, the carry.

The hurdle rate: profits clear a bar first

Here is the feature that makes carried interest fairer than a plain 20% cut, and it is the heart of how this calculator works: the hurdle rate. Also called the preferred return, the hurdle is a minimum return the fund must deliver to its investors before the GP is entitled to a single dollar of carry. It is commonly set around 8% a year.

The logic is sound. Investors should not have to pay a performance bonus for mediocre performance they could have got elsewhere, so the hurdle guarantees them a baseline return first. Only the profits above that hurdle are shared, with the GP taking its carry percentage of the excess. If the fund fails to clear the hurdle at all, the GP earns no carry, no matter how much the fund grew in absolute terms. So the hurdle is not a small detail; it is the threshold that decides whether carry is earned and, if so, on how much of the gains.

How the calculation works

The calculator turns that logic into a few clean steps. First it works out the fund's overall return, simply how much the fund grew from its starting value to its ending value. Then it works out the hurdle value: the figure the fund would reach if it had merely earned the hurdle rate, year after year, over the whole holding period. This is the initial value grown at the hurdle rate and compounded across the years held, so a longer hold or a higher hurdle raises the bar the fund must clear.

With the bar set, the rest is straightforward. If the fund's final value comes in at or below the hurdle value, the fund has not cleared the hurdle, and there is no carry. If it comes in above, the carry is the carry percentage applied to the profit above the hurdle, that is, to the final value minus the hurdle value. That excess, and only that excess, is what the GP shares in.

A worked example

Say a fund starts at 100 million and grows to 250 million over a 5-year hold, with an 8% hurdle rate and a 20% carry.

The fund's overall return is 150%, since 250 million is two-and-a-half times the starting 100 million. Now the hurdle: 100 million growing at 8% a year, compounded over 5 years, reaches about 146.93 million. That is the bar. Because the fund's final value of 250 million comfortably clears it, carry is earned, and it is charged only on the profit above the bar. That excess is 250 million minus 146.93 million, or roughly 103.07 million, and 20% of it is a carry of about 20.61 million. Notice what the hurdle did: of the fund's total gain of 150 million, nearly 47 million was set aside for investors as their preferred return before any split, and the GP's 20% applied only to what was left above it. That is the hurdle quietly protecting the investors' baseline. The compounding behind that bar is the same idea our compound interest calculator handles, and the fund's overall performance can be examined with our average return calculator.

A note on the catch-up

One honest point about what this calculator models. It uses what is called a hard hurdle: the GP's carry applies strictly to the profit above the hurdle, and the profit up to the hurdle goes entirely to the investors. That is the simplest and most investor-friendly arrangement.

Many real-world funds add a further step called the catch-up. Under a catch-up, once the hurdle has been met, the GP receives a large share, often all, of the next slice of profits, "catching up" until its take equals its full carry percentage of everything above the hurdle, after which the remainder is split in the usual proportions. The complete sequence in which money is paid out has a name, the distribution waterfall, and it flows in order: first the investors get their capital back, then they receive the preferred return, then the GP takes its catch-up, and finally the rest is split, typically 80% to investors and 20% to the GP. This tool captures the hurdle and the split but not the catch-up, so for a fund with a catch-up clause the actual carry would be somewhat higher than the figure here. It is worth knowing which structure a given fund uses before reading too much into any single number.

Why carried interest matters

Carried interest is more than a pay cheque; it is the central mechanism that lines up the interests of fund managers and their investors. Because the GP's largest reward arrives only after investors have done well, and only on the profits above a protective hurdle, the structure pushes managers toward strong, patient performance rather than quick fees. It is the reason fund management can be so lucrative, and the reason that fortune is, at least in principle, earned rather than guaranteed.

It is also a subject of public debate, largely over how it is taxed. In many jurisdictions carried interest is treated as a capital gain rather than as ordinary income, which can mean a lower tax rate than a conventional salary would attract, and opinions differ on whether that treatment is appropriate. That debate is a matter of tax policy rather than of the arithmetic, which works the same way regardless. What the calculation itself shows is simply the shape of the bargain: a baseline return protected for investors, and a share of the upside beyond it for the managers who produced it.

Questions people ask

What is carried interest?

It is the share of an investment fund's profits that the fund's managers, the general partners, receive as performance compensation. The standard share is 20% of profits, and it is common in private equity, venture capital, and hedge funds. It rewards managers for generating returns.

What is the hurdle rate?

The hurdle rate, or preferred return, is the minimum return a fund must deliver to investors before the managers earn any carried interest, commonly around 8% a year. Only profits above the hurdle are subject to the carry split, which protects investors' baseline return.

What is the difference between a GP and an LP?

The general partner (GP) is the fund manager who runs the fund and earns the carried interest. The limited partners (LPs) are the investors who provide most of the capital and receive the bulk of the profits. Carried interest is the GP's share of those profits.

What does "2 and 20" mean?

It is the classic fund fee structure: a 2% annual management fee on the fund's assets to cover operating costs, plus 20% carried interest on the fund's profits. The 2% is charged regardless of performance, while the 20% is earned only when the fund makes money.

References

The definition of carried interest, the general partner and limited partner structure, the "2 and 20" model, and the hurdle rate and catch-up within the distribution waterfall follow Carta and Moonfare below.

1. Carta. What is Carried Interest? Definition, Taxation and Fee Structures. carta.com
2. Moonfare. Carried Interest in Private Equity: Definition and Formula. moonfare.com