Candidates arrive able to build a leveraged buyout model and unable to say why the industry exists. That gap shows up immediately, because the good interview questions are not about the mechanics of the model. They are about why a fund would buy this company, at this price, with this much debt, and what has to be true for that to work.
The structure: who gives the money and who runs it
A private equity firm raises a fund, which is a pool of committed capital with a fixed life, usually ten years with extensions. The investors are limited partners: pension schemes, insurers, sovereign wealth funds, endowments, funds of funds and increasingly private wealth. The firm is the general partner, and it makes the investment decisions.
Capital is committed rather than paid. When the fund finds a deal it issues a capital call and the limited partners wire their share. When an investment is sold the proceeds are distributed. That structure is why cash sitting undrawn is not a cost to the fund and why a slow deployment period is nonetheless a problem: the clock on the fund life is running either way.
The economics, and why they shape behaviour
A firm earns in two ways. A management fee, historically around two per cent of committed capital during the investment period and then of invested capital, pays the salaries and the lights. Carried interest, typically twenty per cent of profits above a hurdle rate of around eight per cent, is where the wealth is made.
The hurdle matters more than candidates expect. A fund returning seven per cent annually pays no carry at all, so the incentive is not to be adequate but to clear the bar. That single fact explains the appetite for leverage, the concentration of the portfolio, and the pressure to exit before the fund life makes a sale compulsory.
| Term | What it means |
|---|---|
| Committed capital | What limited partners have promised, not what they have paid |
| Dry powder | Committed capital not yet invested |
| Capital call | The demand for cash when a deal is ready |
| Hurdle or preferred return | The return limited partners get before carry is paid, commonly 8% |
| Carried interest | The general partner share of profits above the hurdle, commonly 20% |
| Clawback | Repayment of carry already taken if later losses drag the fund below the hurdle |
| J-curve | Early negative returns from fees and costs, before exits arrive |
| DPI | Cash actually returned, divided by cash drawn |
| TVPI | Total value including unrealised holdings, divided by cash drawn |
| Vintage | The year the fund started investing, which drives comparability |
Where the returns come from
Every buyout return decomposes into three sources, and knowing the decomposition is the most useful single idea in the industry.
- Earnings growth: the business generates more profit than it did at entry, through revenue growth, margin improvement or acquisitions. This is the source the industry advertises and the one that survives scrutiny.
- Multiple expansion: the business is sold at a higher multiple than it was bought at. Real, unreliable, and largely a function of market conditions rather than anything the fund did.
- Debt paydown: the company cash flow repays borrowings, so the same enterprise value converts into more equity value. Mechanical, and dependent on the business generating cash.
- Ask which source a given deal relies on and you have the investment thesis. A deal that needs multiple expansion to work is a bet on the market, and a good interviewer will say so.
Why leverage, and what it really does
Debt amplifies the equity return because the lender takes a fixed claim and the sponsor keeps the upside. Borrow sixty per cent of the purchase price, grow the business, repay the debt from cash flow, and a modest gain in enterprise value becomes a large gain on the equity cheque.
It amplifies losses identically, and that symmetry is where the discipline comes from. Leverage also imposes a repayment schedule and covenants, which force decisions that a debt-free owner could defer. Sponsors describe that as a feature rather than a cost, and in operationally slack businesses they have a point.
The segments, which are different jobs
| Strategy | What it buys | How it earns |
|---|---|---|
| Large-cap buyout | Control of mature, cash-generative businesses | Leverage, scale efficiencies, multiple on exit |
| Mid-market buyout | Control of smaller businesses, often founder-owned | Professionalisation, buy-and-build, earnings growth |
| Growth equity | Minority stakes in fast-growing, often unlevered companies | Revenue growth, little or no debt |
| Venture capital | Minority stakes in early companies | A small number of very large outcomes |
| Private credit | Loans to sponsor-owned and mid-market companies | Contractual interest and fees |
| Distressed and special situations | Debt or equity of troubled companies | Restructuring, control through debt |
| Infrastructure and real assets | Long-life physical assets | Contracted cash flows, inflation linkage |
| Secondaries | Existing fund stakes from limited partners | Discount to net asset value, shorter duration |
The criticisms, and the honest answers
Interviewers at good funds ask the critical questions, and a candidate who has only read the marketing sounds naive. The criticisms worth being able to engage with are real ones.
That leverage transfers risk to employees and creditors while the sponsor keeps the upside. That fee structures reward asset gathering as much as performance. That multiple expansion in the decade to 2021 flattered a generation of returns that lower rates will not repeat. And that dividend recapitalisations can extract cash without improving anything.
The defensible reply is not that these never happen. It is that they describe a part of the industry rather than all of it, that concentrated ownership with a five-year horizon genuinely does fix things a dispersed public shareholder base will not, and that the returns which survive a rising-rate decade are the ones built on earnings growth. Say which of those you believe and why.
Frequently asked questions
How does a private equity firm make money?
Two ways. A management fee, historically around two per cent of committed capital, funds the business. Carried interest, typically twenty per cent of profits above a hurdle of about eight per cent, is where the economics sit. The hurdle is why adequate performance pays the general partner nothing.
Where do private equity returns come from?
Earnings growth, multiple expansion and debt paydown. Decomposing a deal into those three tells you what the thesis is really betting on. A return that depends on selling at a higher multiple than you bought at is a bet on the market rather than on the business.
What is the J-curve?
The shape of a fund returns over time. Early years show negative returns because fees and transaction costs are drawn before any investment has been sold, and the curve turns up as exits arrive. It is why judging a fund on its first three years tells you almost nothing.
What is the difference between DPI and TVPI?
DPI measures cash actually returned to investors against cash drawn, so it cannot be flattered by a valuation. TVPI adds the general partner own mark on holdings not yet sold. A fund with a strong TVPI and a weak DPI has not yet proved anything.
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