IRR in Private Equity: The Metric Funds Use to Sell You on Returns

TL;DR: Across 12,306 private capital funds totaling $10.5 trillion in AUM, the median net IRR is 9.1%, barely above long-run public market returns once you strip out IRR's mathematical quirks. Oxford professor Ludovic Phalippou, writing for the CFA Institute in November 2024, puts it plainly: IRR is not a rate of return, and every GP who presents it as one is telling you an incomplete truth. Before you commit capital to any private equity fund, understand what IRR measures, how GPs inflate it, and which metrics actually protect your interests.

What IRR Actually Measures

IRR stands for Internal Rate of Return. It is the discount rate that makes the net present value of all fund cash flows equal to zero. That is its mathematical definition. Nothing more.

A concrete example: you invest $100 million into a fund. Five years later the fund returns $210 million. The IRR is 15.97%. That number looks like an annual return. It is not. It is the rate at which your initial investment would need to compound, assuming all interim distributions were reinvested at that same 15.97% for the life of the fund, to produce the final outcome. That reinvestment assumption is almost never achievable in practice.

Phalippou is direct: "None of the performance figures typically displayed for private capital funds are rates of return. Whether explicitly stated or not, each time an annual performance figure is provided for a private capital fund, it is an IRR, yet all press articles and comments present the IRR as a rate of return."

Funds report two versions. Gross IRR reflects performance before management fees and carried interest. Net IRR reflects what LPs actually keep. A fund showing 23% gross IRR might deliver 19% net IRR, a 400 basis point spread that accrues entirely to the GP. Always ask for net IRR. Always.

Industry Benchmarks: What Good Actually Looks Like

The Cambridge Associates US Private Equity Index, drawn from 1,607 funds, provides the clearest benchmarks available. The 10-year horizon net IRR for the US PE Index stood at 15.25% as of June 30, 2024. Calendar year 2024 returned 8.1%, with buyouts at 7.9% and growth equity at 8.8%.

Preqin and Burgiss data corroborate where the quartiles fall for US buyout funds:

Performance Tier	Net IRR Range
Top Decile	25%+
Top Quartile	18 to 22%
Median	12 to 15%
Bottom Quartile	Sub-8%

CalPERS, the California Public Employees' Retirement System, reports a since-inception net IRR of 11.3% with a 1.5x net multiple across its entire private equity program. That is a useful real-world anchor for what a large institutional LP with decades of access and strong manager relationships actually earns over a full cycle.

Vintage year matters as much as manager selection. The 2009 to 2011 vintages outperformed the 2006 to 2007 vintages by 400 to 600 basis points net IRR, with the same GPs running the same strategies. You are not just betting on the manager. You are betting on the macro environment into which they deploy capital and from which they exit. Venture capital shows the widest dispersion: more than 30 percentage points separate top-quartile from bottom-quartile VC funds.

Three Ways GPs Engineer the IRR

Subscription Credit Lines: Buying Time to Boost the Number

Private equity funds borrow against LP commitments via subscription credit facilities before making capital calls. Instead of calling your capital on day one, the GP draws on a credit line, deploys the capital, and calls LP money months later to repay the line. Your capital enters the fund later. The IRR clock starts later. The reported IRR rises, with no corresponding gain in value for you.

MSCI analyzed the Burgiss Manager Universe, covering more than 13,000 funds and 230,000 underlying holdings, and published its finding in January 2024: subscription credit lines inflate median net IRRs by more than 100 basis points for recent buyout and real estate fund vintages. Roughly three-quarters of buyout and real estate funds draw on sub lines in their early years. This is not an edge case. It is standard practice.

The SEC responded. Its February 6, 2024 Marketing Rule FAQ requires funds using subscription lines to present IRR both with and without sub-line impact, with equal visual prominence in marketing materials. Examination staff had already been issuing deficiency letters to funds that disclosed only the inflated figure.

Dividend Recapitalizations: Pulling Cash Forward at the Portfolio Company's Expense

A dividend recap works like this: the GP loads a portfolio company with new debt, then extracts a special cash dividend to the fund. The fund receives cash early. The IRR clock records an early inflow. Reported IRR rises. The portfolio company absorbs the debt burden.

September 2024 set a single-month record: US leveraged loan markets issued more than $17.4 billion in dividend recaps. Year-to-date 2024 volume reached $69.3 billion, approaching the all-time annual record of $76 billion set in 2021.

The Belron transaction illustrates the scale. CD&R, Hellman & Friedman, BlackRock, and GIC extracted a EUR 4.4 billion special dividend by loading Belron with EUR 8.1 billion in new bonds and loans, the largest PE-backed dividend recap on record. Post-transaction debt reached 5.8x EBITDA. The sponsors' fund IRRs benefited from the early inflow. Belron's creditors absorbed the risk.

Caxton-Iseman Capital's Buffets restaurant chain provides the legal consequence. Creditors sued, alleging that "the principal purpose of these transactions was to pay huge dividends to defendants by borrowing huge amounts of money that left Buffets insolvent." The GP had de-risked its position. The operating company was left exposed.

Continuation Vehicles: Locking In IRR Without a Real Market Test

When traditional exits are blocked by rising rates or limited buyer demand, GPs increasingly sell portfolio companies into continuation vehicles at internally determined NAVs. The original fund records a realized gain and a favorable IRR. The continuation vehicle's LPs absorb the ongoing risk at a GP-set price, not a market-clearing price.

This matters because 28,000 PE-backed companies remain unsold as of 2025, representing $3.2 trillion in unrealized value. The SEC listed continuation vehicle structures in its 2024 to 2025 examination priorities specifically because of the IRR-locking incentive they create for GPs.

Blackstone BCP VIII illustrates the backlog problem directly. The 2019-vintage fund raised $25.7 billion in committed capital. Its DPI stands at 0.18x as of recent reporting. Less than 20 cents on every dollar of LP capital has been returned in real distributions, even as the fund reports a positive IRR. The investment period coincided with COVID-era monetary easing. The exit window opened into a rate-hike cycle.

IRR vs. MOIC vs. DPI: When Each Metric Matters

No single metric tells the full story. You need all three, and you need to know what each one conceals.

Metric	What It Measures	Strength	Blind Spot
IRR	Time-adjusted return rate	Cross-asset comparison that accounts for cash flow timing	Embeds unrealistic reinvestment assumptions. Inflatable via sub lines and recaps
MOIC	Total value returned divided by capital invested	Absolute value creation. Simple to verify	Ignores time entirely. A 3x in 3 years and a 3x in 12 years look identical
DPI	Actual cash returned as a multiple of capital called	Cannot be engineered. Only realized exits count	Understates value for funds early in their life
TVPI	DPI plus remaining net asset value	Captures both realized and unrealized value	Unrealized portion relies on GP-set marks

The LP community has a phrase for this divide: "Paper returns are a hypothesis. DPI is the proof."

A 2024 ILPA survey quantified the shift: 74% of institutional LPs now rank DPI as their primary fund evaluation criterion when deciding whether to re-up with a GP, a share 2.5 times higher than three years prior. Institutional LPs are not abandoning IRR. They are refusing to let it stand alone.

KKR's Form 10-K filed with the SEC shows how these metrics can work together. KKR North America Fund XI, Americas XII, and North America XIII combined report 23% gross IRR, 19% net IRR, 2.1x gross MOIC, and 1.8x net MOIC as of December 31, 2025. That is a coherent, multi-metric picture. By contrast, KKR Americas XII alone showed a 50.1% gross IRR as of December 31, 2021, a figure Phalippou uses to illustrate how concentrated early cash flows produce mathematically extreme IRR readings that bear no connection to a sustainable compounding rate.

MIRR: The More Honest Alternative

Modified Internal Rate of Return corrects the core flaw in standard IRR. Standard IRR assumes all interim distributions are reinvested at the IRR itself. If a fund reports 30% IRR, the math assumes you reinvest every distribution at 30% for the remainder of the fund's life. That assumption is almost never achievable.

MIRR replaces the reinvestment assumption with a rate you specify, typically the public market hurdle rate or the average return of the relevant asset class. The result is a lower, more defensible number. Extreme IRR readings come down to earth. Weaker funds stop being measured against unrealistic compounding standards.

GPs resist MIRR because a lower number is harder to present in fundraising. Steven Tredget of Oakley Capital said at a 2024 industry roundtable: "It's all very well having a very high unrealized IRR money multiple, but it's increasingly seen as meaningless without demonstrating whether that return is in any way realizable." David Genn, CEO of Goji, was blunt: "The industry will undermine itself if it's not way more precise around this."

ILPA's 2025 Performance Template does not yet mandate MIRR reporting. Sophisticated LPs request it as a supplement. If a GP cannot produce an MIRR calculation alongside the standard IRR, ask why not.

What the Regulatory Shift Means for You

The SEC's February 6, 2024 Marketing Rule FAQ is the most direct regulatory intervention to date. Any fund using subscription credit lines must now present IRR with and without sub-line impact at equal visual prominence in all marketing materials. Mass Ave Global Inc. received a $350,000 SEC enforcement penalty for misleading investor statements about fund performance, an early signal that the agency intends to convert examination findings into formal actions.

ILPA moved in parallel. On January 22, 2025, ILPA released its updated Reporting Template and a new Performance Template: the first industry-wide standard for calculating and presenting fund performance metrics. New funds must adopt it from Q1 2026, with LP delivery expected by Q1 2027. The Fifth Circuit vacated the broader SEC Private Fund Advisers Rule in 2024. The Marketing Rule and examination-based enforcement remain fully intact.

What to Demand Before You Commit Capital

Whether you are evaluating a buyout fund, a growth equity manager, or an emerging GP, these are the specific asks your due diligence should cover:

• Net IRR, not gross. The spread can be 400 basis points or more. Gross IRR is a GP metric. Net IRR is your metric.
• IRR with and without subscription line impact. The SEC requires this for registered advisers. Ask for it from everyone.
• DPI by vintage year. A GP with strong IRR but low DPI across multiple vintage years is carrying paper value, not delivering cash.
• TVPI broken into DPI and RVPI. Know how much is real cash versus unrealized marks subject to GP discretion.
• MOIC alongside IRR. A 2.5x in three years is a different investment than a 2.5x in ten years.
• MIRR, or an explanation for why the GP will not provide it. Ask what reinvestment rate assumption is embedded in the reported IRR figure.
• Vintage-year peer comparison against Cambridge Associates or Burgiss benchmarks. Cross-vintage comparisons obscure more than they reveal.
• Continuation vehicle and NAV lending activity. Ask directly whether the fund has sold assets into a continuation vehicle or borrowed against portfolio company NAVs.

Risks to Weigh

Private equity is illiquid by design. You cannot exit when conditions turn unfavorable. Blackstone BCP VIII LPs who committed in 2019 faced a post-2022 rate environment that compressed exit valuations and had no mechanism to reduce exposure. Vintage-year risk is real and largely outside any GP's control: the same team, the same strategy, and the same terms can produce top-quartile returns in one vintage and median returns in the next, depending on entry valuations and exit windows.

Fee structures compound over time. A 2-and-20 structure on a fund that takes 10 years to fully realize means management fees consume a meaningful share of gross returns before carried interest applies. The 5-year Public Market Equivalent for US buyout funds dropped to 1.05 to 1.12 as of 2024, per Cambridge Associates and Bain analysis. After accounting for the illiquidity premium, recent vintage buyout LPs received returns roughly equivalent to public market exposure.

IRR is a useful metric. It is not an honest one when presented in isolation. ILPA's 2025 Performance Template and the SEC's 2024 Marketing Rule FAQ are the first serious structural attempts to close the gap between what IRR says and what LPs receive. Use both as the baseline for what any GP you evaluate should now be able to provide.

Author Disclosure: Jeff Barnes, MBA has no personal position in any company, fund, or platform named in this article. Angel Investors Network has no current commercial relationship with any party mentioned. AIN provides marketing and education services, not investment advice. Past performance does not guarantee future results. All investments involve risk, including loss of principal.