Over the previous 20 years, traders have poured capital into non-public property, drawn by the promise of upper returns than public markets. However as Ludovic Phalippou highlights in “The Tyranny of IRR,” many traders are starting to query whether or not non-public fairness (PE) returns actually dwell as much as their inner charge of return (IRR) figures.
A key purpose for the mismatch lies in partial funding. Not like public property, PE funds name capital regularly and return it in levels, that means that a big portion of the dedicated capital might sit idle for years. This reduces the investor’s acquire, at the same time as IRR stays excessive.
IRR compounds the issue by solely contemplating capital deployed by the fund supervisor, not the complete quantity contributed by the investor. Consequently, it overstates efficiency and hides the drag of unused capital. To know what traders actually earn, we’d like a metric that captures this dilution.
Enter the capital deployment issue (CDF) — a easy but highly effective software that measures how a lot of the paid-in capital was put to work. It reveals not simply how a lot was used, but additionally how a lot acquire was misplaced as a consequence of partial funding.
The CDF quantifies the impression of partial funding by displaying what portion of paid-in capital was really used to generate returns. As a result of acquire is proportional to the CDF, it additionally signifies how a lot potential return was forfeited as a consequence of idle capital.
What does the CDF reveal concerning the impression of partial funding on actual PE funds? It exhibits that it is extremely important, because the CDF of PE funds not often 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 beneficial properties from the identical capital paid in. Against this, the CDF permits traders to calculate the IRR a fund would wish 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 realizing the fund’s IRR, TVPI and period.

The TVPI is the entire worth to paid-in indicator at time t, IRR is the inner charge 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 signifies 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 supply wealth.
The IRR and TVPI figures above have been compiled by Phalippou from an enormous 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 typical 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, because the acquire is decreased in proportion to the CDF, as proven by the acquire equation:

Dugant is the entire quantity the investor paid in as much as time t and Acquiretthe 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 not often 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 greater CDFs than buyout funds, as illustrated in Determine 1.
Determine 1.

Who controls the CDF? The CDF is dictated by the PE fund supervisor, because the 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 complete quantity is known as in at the start 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 by way of efficiency after 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 will need to 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 will need to 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 sources 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 could possibly be a lot decrease at:

A CDF = 100% implies that the quantity paid in remained absolutely 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 may 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 progress charge greater than 3.55% each year can be sufficient to outperform funds A and B.
Key Takeaways
- IRR can mislead: A ten% IRR on a $1 million PE funding may yield solely $30,000 — not $100,000 — as a result of a lot of the capital wasn’t really deployed.
- IRR ignores idle capital, because it calculates returns solely on the capital really deployed, and overlooks the destiny of uninvested funds.
- The capital deployment issue (CDF) is the important thing ratio to investigate 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’s compelling empirical proof that non-public property are inclined to outperform public property, the precise end result for PE traders usually fails to replicate this superiority as a result of impression of idle capital. So, it’s not non-public property which might be a efficiency concern, however somewhat 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 beneficial properties 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 traders want full-picture metrics. The primary efficiency measurement indicators don’t replicate the true end result for the investor, as they take into consideration neither the preliminary dedication, nor the proceeds from money awaiting name and money returned by the PE fund. Orbital Property Technique (OAM) gives an answer:
- Treats dedicated capital as an entire — 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 Non-public 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 Non-public 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). Accessible at SSRN: https://ssrn.com/summary=5025814 or http://dx.doi.org/10.2139/ssrn.5025814.