Over the previous twenty years, buyers have poured capital into personal property, drawn by the promise of upper returns than public markets. However as Ludovic Phalippou highlights in “The Tyranny of IRR,” many buyers are starting to query whether or not personal fairness (PE) returns actually stay as much as their inner price of return (IRR) figures.
A key purpose for the mismatch lies in partial funding. In contrast to public property, PE funds name capital regularly and return it in phases, which means that a big portion of the dedicated capital could sit idle for years. This reduces the investor’s acquire, whilst IRR stays excessive.
IRR compounds the issue by solely contemplating capital deployed by the fund supervisor, not the total quantity contributed by the investor. In consequence, it overstates efficiency and hides the drag of unused capital. To grasp what buyers actually earn, we’d like a metric that captures this dilution.
Enter the capital deployment issue (CDF) — a easy but highly effective device that measures how a lot of the paid-in capital was put to work. It reveals not simply how a lot was used, but in addition how a lot acquire was misplaced because of partial funding.
The CDF quantifies the impression of partial funding by exhibiting what portion of paid-in capital was truly used to generate returns. As a result of acquire is proportional to the CDF, it additionally signifies how a lot potential return was forfeited because of idle capital.
What does the CDF reveal in regards to the impression of partial funding on actual PE funds? It exhibits that it is vitally important, because the CDF of PE funds hardly ever exceeds 60% over their lifetime and sometimes falls to between 15% and 30% on the time of liquidation.
A aspect impact of partial funding is that IRR turns into unreliable for evaluating efficiency: Funds with the identical IRR however completely different capital deployment ranges can produce very completely different features from the identical capital paid in. Against this, the CDF permits buyers to calculate the IRR a fund would want to match the acquire of one other fund or a liquid asset for a similar capital outlay.
Capital Deployment Issue
The CDF exhibits the fraction of the quantity paid in by the investor that was deployed by the PE fund supervisor. It may be calculated at any time figuring out the fund’s IRR, TVPI and period.

The TVPI is the overall worth to paid-in indicator at time t, IRR is the inner price of return since inception expressed on an annualized foundation, and DUR the variety of years elapsed from inception to time t. For instance, a PE fund with an IRR = 9,1% each year and a TVPI = 1,52X, after 12 years:

What does this CDF determine imply? It implies that over the 12-year interval, solely 28.2% of the capital paid in by the investor was utilized by the fund supervisor to generate the acquire. In different phrases, simply over one greenback in 4 was put to make use of to provide wealth.
The IRR and TVPI figures above have been compiled by Phalippou from an unlimited and respected PE fund database. IRR = 9.1% each year representing the median IRR for PE funds within the database, and TVPI = 1.52x, their common TVPI. The period displays the common 12-year lifetime of a PE fund. The CDF = 28.2% is thus broadly consultant of the median PE fund at its date of liquidation.
How does the CDF have an effect on the investor? The impression of partial funding is appreciable, for the reason that acquire is decreased in proportion to the CDF, as proven by the acquire equation:

PAIDINt is the overall quantity the investor paid in as much as time t and Acquiret, the acquire at time t. Thus, the median PE fund sees its acquire decreased by an element of 0.282 owing to partial funding.
What’s the CDF’s typical vary for PE funds? It varies all through the fund’s life. We discovered it hardly ever exceeds 60% throughout its lifetime and falls someplace between 15% and 30% at liquidation. Enterprise capital funds and first funds of funds are inclined to have larger CDFs than buyout funds, as illustrated in Determine 1.
Determine 1.

Who controls the CDF? The CDF is dictated by the PE fund supervisor, for the reason that supervisor alone decides on the timing of flows. The CDF will increase if the supervisor calls the capital earlier. The CDF additionally will increase if funds are deferred. If the total quantity is known as in originally and each capital and acquire are repaid on the finish of the measurement interval, the CDF is the same as 100%.

Evaluating Returns
Two funds are equal when it comes to efficiency once they have generated the identical acquire from the identical quantity paid in. This formulation expresses this equivalence criterion by giving the IRR that fund A should have whether it is to generate the identical acquire as fund B out of the identical quantity paid in.

Let’s take a look at an instance:
- Fund(A): DUR = 12 years; CDF = 20.0%; IRR = ?.
- Fund(B): DUR = 12 years; CDF = 28,2%; IRR = 9,1% per 12 months.
What IRR ought to fund A have for its efficiency to be equal to that of fund B?

Thus, fund A should have an IRR = 11.26% each year for its efficiency to be equal to that of fund B, which has an IRR = 9.1%. The reason being fund A’s supervisor has used fewer of the assets at his disposal than fund B’s supervisor, which is mirrored of their respective CDFs. If fund A has an IRR larger than 11.26%, it’s thought of to have outperformed fund B.
Let’s now assume that fund C has a CDF = 100% and the identical period as fund B. For fund C to have equal efficiency to fund B, its IRR may very well be a lot decrease at:

A CDF = 100% implies that the quantity paid in remained totally invested all through the 12-year interval, with no interim money flows, the capital and acquire being recovered by the investor on the finish of the interval. This could be the case for an investor who purchased the identical quantity of a public asset and offered it 12 years later. For him, a median development price larger than 3.55% each year could be sufficient to outperform funds A and B.
Key Takeaways
- IRR can mislead: A ten% IRR on a $1 million PE funding would possibly yield solely $30,000 — not $100,000 — as a result of a lot of the capital wasn’t truly deployed.
- IRR ignores idle capital, because it calculates returns solely on the capital truly deployed, and overlooks the destiny of uninvested funds.
- The capital deployment issue (CDF) is the important thing ratio to research the impression of a PE fund’s capital deployment coverage and its penalties on the result of a PE funding.
- The good empirical paradox: Though there may be compelling empirical proof that non-public property are inclined to outperform public property, the precise final result for PE buyers usually fails to replicate this superiority as a result of impression of idle capital. So, it’s not personal property which are a efficiency concern, however relatively PE funds as funding autos.
- IRR comparisons are flawed: Funds with the identical IRR however completely different ranges of capital deployment generate completely different precise features for a similar quantity paid in.
- PME shares IRR’s blind spots: Like IRR, the general public market equal (PME) doesn’t account for idle capital.
Institutional buyers want full-picture metrics. The principle efficiency measurement indicators don’t replicate the true final result for the investor, as they consider neither the preliminary dedication, nor the proceeds from money awaiting name and money returned by the PE fund. Orbital Property Technique (OAM) provides an answer:
- Treats dedicated capital as a complete — together with what sits exterior the PE fund.
- Measures efficiency from each the PE funding and surrounding liquid property.
- OAM Efficiency figures are akin to these of different property.
References
Ludovic PHALIPPOU, “The Tyranny of IRR: A Actuality Verify on Personal Market Returns”. Enterprising Investor, 8 November 2024, https://blogs.cfainstitute.org/investor/2024/11/08/the-tyranny-of-irr-a-reality-check-on-private-market-returns/.
Xavier PINTADO, Jérôme SPICHIGER, Mohammad NADJAFI, The Canonical Type of Funding Efficiency (July 2025), Forthcoming at SSRN.
Xavier PINTADO, Jérôme SPICHIGER, Are IRR performances of Personal Fairness Funds Comparable? (November 2024). SSRN: https://ssrn.com/summary=5025824 or http://dx.doi.org/10.2139/ssrn.5025824.
Xavier PINTADO, Jérôme SPICHIGER, The Orbital Property Technique (2024). Out there at SSRN: https://ssrn.com/summary=5025814 or http://dx.doi.org/10.2139/ssrn.5025814.