Private equity is one of the most influential and least understood sectors of the financial system. PE firms control trillions of dollars of assets, employ hundreds of thousands of people, and own companies in virtually every industry — from hospital chains and restaurant franchises to software platforms and industrial manufacturers. Yet most people who encounter the term cannot explain, with any precision, what PE firms actually do, how they make money, or why their ownership of a business is different from any other investor owning shares.
The mechanics matter because they determine everything else: what kinds of companies PE firms buy, how they change those companies once they own them, what returns they generate, and what the people who work at PE firms are actually doing day to day. Understanding private equity is increasingly important not just for finance professionals but for anyone working at, selling to, or negotiating with a PE-owned company — which describes a large and growing share of the professional economy.
This article explains private equity from first principles: what a PE fund is, how it raises and deploys capital, how leveraged buyouts work mechanically, how value is created (and sometimes destroyed), what the fee structure looks like, and who works at PE firms. Data and examples draw on Preqin industry reports, PitchBook research, industry practitioners, and academic studies of PE returns through 2024.
'Private equity is the simplest business in finance to describe and one of the hardest to execute well. You raise money, you buy businesses, you try to make them more valuable, and you sell them. Everything else is detail — but the detail can consume your entire career.' — David Rubenstein, co-founder, The Carlyle Group, from a 2020 Carlyle investor day presentation.
Key Definitions
General partner (GP): The PE firm itself — the entity that manages the fund, makes investment decisions, and earns management fees and carried interest.
Limited partner (LP): An investor in the PE fund — typically a pension fund, endowment, sovereign wealth fund, or family office — who commits capital but has no role in investment decisions and limited liability.
Committed capital: The total amount LPs have pledged to invest over the life of the fund, which is drawn down gradually as the GP identifies investments. A $5 billion fund does not hold $5 billion in cash on day one; it calls capital from LPs as deals are completed.
MOIC (Multiple on Invested Capital): A measure of PE fund returns. A 2.5x MOIC means that for every dollar invested, the fund returned $2.50 — a 150 percent profit. MOIC is a useful complement to IRR because it shows absolute value creation regardless of timing.
EBITDA: Earnings before interest, taxes, depreciation, and amortization — the most common metric used to value companies in PE transactions and to measure operational performance during the hold period.
How a PE Fund Is Structured
A private equity fund is a legal entity (typically a limited partnership) formed for the purpose of acquiring and managing investments over a defined period. The structure is:
Fundraising phase (Year 1): The GP approaches institutional investors — pension funds, endowments, insurance companies, sovereign wealth funds — and asks them to commit capital to the fund. LPs commit to provide capital when called, subject to the fund's investment strategy. A major PE firm like Blackstone or KKR raises a new flagship fund every 3-5 years; their funds are measured in tens of billions of dollars.
Investment period (Years 1-5): The GP identifies acquisition targets, performs due diligence, arranges debt financing, and closes transactions. Capital is 'called' from LPs as each deal closes — LPs must wire their committed percentage of the acquisition price within days of a capital call.
Hold period (Years 3-10): The GP manages the portfolio companies, implements value creation plans, and monitors performance. The hold period for individual investments overlaps with the investment period; a fund might still be buying new companies in year 4 while also planning to sell companies it bought in year 2.
Exit and distribution (Years 5-10): Portfolio companies are sold through M&A transactions, IPOs, or secondary sales to other PE firms. Sale proceeds are distributed to LPs first (returning invested capital plus the 8 percent preferred return), after which the GP receives 20 percent of remaining profits as carried interest.
The typical fund lifecycle is 10 years, often with extension provisions. A fund that closes in 2024 might not fully return capital to LPs until 2034.
How a Leveraged Buyout Works
The leveraged buyout (LBO) is the core transaction type in private equity. Here is how it works mechanically:
Step 1: Target Selection
A PE firm identifies a company as an attractive acquisition target based on criteria including: predictable and growing free cash flows (necessary to service acquisition debt), potential for operational improvement, clear exit strategy, and a purchase price that allows for acceptable projected returns.
Good LBO candidates typically have: EBITDA margins of 15-30 percent, low existing debt, limited capex requirements, defensible market positions, and experienced management that will stay through PE ownership.
Step 2: Deal Structuring
The PE firm negotiates a purchase price, typically expressed as a multiple of EBITDA. If the target generates $100 million in EBITDA and the agreed purchase price is 10x EBITDA, the total enterprise value is $1 billion.
To finance this, the PE firm arranges a capital structure:
- Senior debt (bank term loan or leveraged loan): $400 million
- Mezzanine or subordinated debt: $200 million
- PE equity contribution: $400 million
The 60 percent debt/40 percent equity split is typical for a moderate-leverage deal. Deals with more predictable cash flows can support higher leverage ratios (70-75 percent debt); cyclical businesses require lower leverage.
Step 3: Value Creation During the Hold Period
After acquisition, the PE firm works to increase the company's value through:
Operational improvement: Cutting costs, improving margins, streamlining operations, professionalising management processes. PE firms employ 'operating partners' — experienced executives from relevant industries — to help implement these changes.
Revenue growth: Expanding into new markets, launching new products, improving sales force effectiveness, or making strategic 'add-on' acquisitions that extend the platform.
Multiple expansion: Buying a company at a lower EBITDA multiple than competitors trade for, with a plan to reposition it so it commands a higher multiple at exit. A business bought at 7x EBITDA that is sold at 10x EBITDA generates significant returns from multiple expansion alone.
Debt paydown: The company uses its operating cash flows to pay down the acquisition debt over the hold period. This increases the equity value because debt is reduced without the purchase price changing — a financial engineering contribution to returns.
Step 4: Exit
PE firms exit investments through:
- Strategic sale (M&A): Selling to a strategic acquirer (a larger company in the same industry) often achieves the highest valuation because strategic buyers pay synergy premiums
- Secondary buyout: Selling to another PE firm, common in the mid-market
- IPO: Taking the company public, which allows partial exit and potential future selling of shares
Returns Calculation Example
- Entry: Buy company for $1 billion (10x $100M EBITDA)
- Equity invested: $400 million
- Hold period: 5 years
- After 5 years: EBITDA has grown to $150 million; exit at 11x = $1.65 billion enterprise value
- Remaining debt: $250 million (down from $600M through paydown)
- Equity value at exit: $1.65 billion - $250 million = $1.4 billion
- Return: $1.4 billion / $400 million = 3.5x MOIC; approximately 28% IRR
Fee Structure and How PE Firms Get Paid
Management fee: Typically 1.5-2 percent of committed capital annually during the investment period, transitioning to 1-1.5 percent of invested capital thereafter. On a $5 billion fund, this generates $75-100 million per year — enough to cover firm operating costs, base salaries, and overheads.
Carried interest: 20 percent of profits above the preferred return (hurdle rate), typically set at 8 percent annually. This is calculated on a fund-level basis (not deal-by-deal), meaning early losses can reduce carry earned from later gains. The carry is the primary wealth-generation mechanism for PE partners.
Transaction fees: Many PE firms charge portfolio companies advisory fees when transactions close. These have faced increasing LP scrutiny and are often rebated back to the fund (50-100 percent offset against the management fee).
Value Creation vs Value Extraction: The Ongoing Debate
Private equity generates most of its returns through a combination of genuine operational improvement and financial engineering. The relative contribution of each is contested.
Academic research has found mixed evidence on whether PE ownership genuinely improves business operations. A 2020 study by Pitchbook and the American Investment Council found that PE-backed companies grew revenue and employment faster than industry averages on average. However, a 2019 study in the Journal of Finance found that healthcare facilities under PE ownership cut costs in ways that affected patient care quality.
The debate matters because PE firms own hospitals, nursing homes, retail chains, media companies, and technology platforms. The effects of their ownership model are not purely financial — they shape how those businesses operate for workers, customers, and communities. This context is worth understanding for anyone working in finance or at PE-owned companies.
Who Works at PE Firms
PE firms are small relative to the capital they manage. A $10 billion PE firm might employ 50-150 investment professionals, compared to the thousands employed by investment banks or asset managers.
Investment professionals — associates, senior associates, VPs, principals, and partners — are responsible for sourcing deals, performing diligence, managing portfolio companies, and working toward exits.
Operating partners — typically executives with C-suite experience in relevant industries — provide operational expertise to help portfolio companies improve performance.
Investor relations and capital formation teams manage LP relationships and raise new funds.
The extreme leverage of PE economics — a small team controlling enormous capital — means that individual professionals at senior levels have unusually high economic impact and correspondingly high compensation.
Practical Takeaways
Private equity is a compelling career and investment strategy with genuinely interesting mechanics, but it is also a business model with critics and real-world consequences that are worth understanding. For career purposes: PE offers the best-structured path from investment banking for those who want to work in investment management with meaningful operational involvement. The financial rewards at senior levels are exceptional, built on carried interest that compounds over successful fund cycles. The path is demanding and selective, but the skills it develops — analytical rigor, deal structuring, business judgment — are transferable and valuable for any subsequent career in business or finance.
References
- Preqin, 'Private Equity Industry Report 2023.' preqin.com
- PitchBook, 'US PE Breakdown: Annual 2023.' pitchbook.com
- Rosenbaum, J., Pearl, J. 'Investment Banking: Valuation, LBOs, M&A and IPOs.' 3rd ed. Wiley, 2020.
- Kaplan, S., Stromberg, P. 'Leveraged Buyouts and Private Equity.' Journal of Economic Perspectives, 2009.
- American Investment Council, 'Private Equity Growth Report 2022.' investmentcouncil.org
- Mergers and Inquisitions, 'Private Equity Explained: The Complete Guide.' 2024.
- Wall Street Oasis, 'How Does Private Equity Work?' 2024.
- Rubenstein, D. 'The American Story: Conversations with Master Historians.' Simon & Schuster, 2019.
- Financial Times, 'Private equity returns: separating fact from fiction.' 2023.
- Appelbaum, E., Batt, R. 'Private Equity at Work.' Russell Sage Foundation, 2014.
- Bloomberg, 'The Mechanics of a Leveraged Buyout, Explained.' 2022.
- Harvard Business Review, 'The Strategic Secret of Private Equity.' 2007 (classic reference, updated with 2023 context).
Frequently Asked Questions
What is a leveraged buyout (LBO)?
A leveraged buyout is the acquisition of a company using a combination of equity and significant debt. Typically 60-80 percent of the purchase price is financed with borrowed money, with the debt secured against the target company's assets and cash flows. The PE firm contributes the remaining 20-40 percent as equity. Returns are amplified by the leverage effect: if the company's value grows, the equity portion benefits disproportionately.
How long does a PE fund hold a company?
Private equity firms typically hold portfolio companies for 3-7 years, with 5 years being a common average. The hold period is used to implement operational improvements, strategic acquisitions, and financial restructuring before selling the company at a higher valuation than the entry price.
What is the typical return target for a PE fund?
Most PE firms target gross IRRs of 20-25 percent and equity multiples of 2-3x invested capital (MOIC) over the fund lifecycle. Top-quartile funds have historically achieved these targets; average funds significantly underperform. These returns are before management fees and carried interest, which reduce net returns to LPs.
How do PE firms make money?
PE firms earn management fees (typically 1.5-2 percent of committed capital annually) and carried interest (typically 20 percent of investment profits above an 8 percent preferred return hurdle). The management fee covers operational costs; the carry is the primary wealth-generation mechanism for firm partners.
Who invests in private equity funds?
PE funds raise capital from institutional investors including pension funds, university endowments, sovereign wealth funds, insurance companies, and family offices. The minimum commitment is typically $5-25 million, making PE inaccessible to most individual investors directly. Some investors gain PE exposure through fund-of-funds or publicly traded PE firms.
