A private equity fund works by pooling money from a limited group of wealthy and institutional investors into a ten-year limited partnership, which a professional manager then uses to buy controlling stakes in private companies, improve them, and sell them at a profit. Understanding how private equity funds work matters before you commit, because the manager charges roughly 2% of your committed capital every year and keeps 20% of the profits above a negotiated hurdle, and your money is largely locked up until the fund winds down. The rest of this piece walks through who can invest, how the partnership is structured, how and when cash moves in both directions, and what to expect at tax time.
Who Can Put Money In
Private equity funds are not open to the public. Federal securities law lets these funds skip the registration process that public companies go through, but only if they limit who can invest. Most funds rely on an exemption under SEC Regulation D that restricts participation primarily to accredited investors and, for larger funds, qualified purchasers.
Accredited Investor Thresholds
To qualify as an accredited investor, you need to meet at least one of these tests:
- Individual income above $200,000 in each of the two most recent years, or $300,000 jointly with a spouse, with a reasonable expectation of the same level in the current year.
- Individual or joint net worth above $1,000,000, excluding the value of your primary residence.
These thresholds come from SEC Rule 501 of Regulation D.1eCFR. 17 CFR 230.501 – Definitions and Terms Used in Regulation D Certain professionals holding Series 7, Series 65, or Series 82 licenses also qualify regardless of income or net worth.
Qualified Purchaser Threshold
Larger funds, particularly those expecting more than 100 investors, often rely on a separate exemption that requires every investor to be a qualified purchaser. For individuals, that means owning at least $5,000,000 in investments.2Legal Information Institute. 15 U.S. Code 80a-2(a)(51) – Qualified Purchaser Definition The higher bar exists because funds using the qualified-purchaser exemption under the Investment Company Act can accept an unlimited number of investors without registering as an investment company.3Office of the Law Revision Counsel. 15 U.S. Code 80a-3 – Definition of Investment Company Funds accepting only accredited investors are generally capped at 100 beneficial owners under a narrower exemption in the same statute.
How the Fund Reaches You
Most private equity funds raise capital under Rule 506(b) of Regulation D, which prohibits the fund from advertising or publicly soliciting investors. Securities can be sold to an unlimited number of accredited investors and up to 35 non-accredited investors, though in practice nearly all PE funds accept only accredited investors.4U.S. Securities and Exchange Commission. Private Placements – Rule 506(b) A newer option, Rule 506(c), allows public advertising, but every investor must be accredited and the fund must take extra steps to verify that status, such as reviewing tax returns or brokerage statements.5Investor.gov. Rule 506 of Regulation D
The Partnership You Are Joining
A private equity fund is structured as a limited partnership. That structure draws a legal line between the person managing the money and the people supplying it, and it defines what you can and cannot do once you invest.
The General Partner Runs the Fund
The general partner (GP) controls every investment decision: which companies to buy, how to operate them during the holding period, and when and how to sell. The GP signs contracts, represents the fund in legal proceedings, and bears unlimited personal liability for the partnership’s debts. In practice the GP is almost always a separate limited liability entity rather than an individual, specifically to manage that liability exposure.
Limited Partners Supply the Capital
Limited partners (LPs) are the passive investors: pension funds, endowments, insurance companies, sovereign wealth funds, and high-net-worth individuals. Your financial risk as an LP is capped at the amount of capital you commit. To preserve that protection, LPs cannot participate in running the fund’s day-to-day operations. Under the Delaware Revised Uniform Limited Partnership Act, which governs the vast majority of U.S. private equity funds, a limited partner who participates in controlling the business risks losing that liability shield and becoming personally responsible for fund debts.
The Limited Partnership Agreement
The limited partnership agreement (LPA) is the binding contract that defines every material term of the relationship: the fund’s lifespan, fee arrangements, distribution rules, capital call procedures, restrictions on the GP, and the circumstances under which the fund can be extended or dissolved. It is negotiated before any capital is committed and governs the entire life of the fund. Large institutional LPs sometimes negotiate supplemental side letters granting them preferential terms, such as reduced fees or enhanced reporting.
Ten Years, Not Overnight
A private equity fund has a predetermined lifespan, typically around ten years. The first three to five years are the investment period, during which the GP identifies and acquires companies. The remaining years form the harvest period, during which the GP manages, improves, and sells those companies. Because the fund is a closed-end vehicle, you generally cannot withdraw your money before the partnership dissolves, though a secondary market exists where LPs can sell their interests to other investors, usually at a discount.
What You Commit and When You Pay
Commitments and Dry Powder
When you invest in a private equity fund, you don’t hand over all your money at once. You sign a legally binding commitment to contribute up to a specific total amount over the fund’s life. Until the GP actually requests that money, your unspent commitment is called dry powder. This arrangement gives the fund flexibility to deploy capital as opportunities arise rather than sitting on a large cash pile earning minimal returns.
Capital Calls
When the GP identifies an investment or needs to cover fund expenses, it issues a capital call, a formal notice requiring LPs to wire a portion of their committed capital within a short window, typically 10 to 14 days. Missing a capital call can trigger severe consequences laid out in the LPA, including penalty interest for each day the payment is late, forced sale of your entire stake in the fund on terms dictated by the GP, or forfeiture of your existing interest. Practically, this means you need to keep committed capital liquid and available across the investment period, even though you don’t know exactly when the calls will come.
Management Fees
The GP charges an annual management fee, traditionally 2% of total committed capital, to cover operating costs such as salaries, office overhead, deal sourcing, and due diligence. On a $500 million fund, that translates to $10 million per year. The fee is not tied to performance, so the GP collects it whether the fund is up or down. During the harvest period, some funds shift the fee calculation from committed capital to invested capital, which reduces the fee as investments are sold off. Fee structures are negotiated between LPs and the GP when the fund is created, and larger investors frequently negotiate discounts.
What the Fund Does With Your Money
Leveraged Buyouts
The most common investment strategy in private equity is the leveraged buyout. The fund acquires a controlling stake in a company using a combination of its own equity and a significant amount of borrowed money, with debt typically making up 60% to 80% of the total purchase price. That debt sits on the acquired company’s balance sheet, not the fund’s. The company’s own cash flow is used to service the interest and principal payments. Leverage magnifies returns when the company performs well, and it increases the risk of financial distress if cash flow falls short.
Operational Improvements
After acquiring a company, the GP actively works to increase its value. Common tactics include replacing management, cutting costs, restructuring supply chains, expanding into new markets, and investing in technology to boost productivity. The goal is to grow the company’s earnings, which drives up the sale price when the fund eventually exits. Because the GP holds a controlling stake, it can implement these changes faster than a typical public company board could.
Dividend Recapitalizations
A dividend recapitalization is a technique where the GP directs a portfolio company to take on new debt and uses the proceeds to pay a cash dividend back to the fund’s investors. This allows the GP to return capital, and lock in partial gains, before actually selling the company. It also increases the company’s debt load, which can limit its future flexibility and increase risk for the business.
How and When You Get Paid Back
The fund’s returns are realized when the GP sells its portfolio companies. Each exit route has different implications for timing, price, and complexity.
- Initial public offering. The GP takes the company public by listing shares on a stock exchange. This can produce the highest valuations but involves regulatory filings, lock-up periods preventing immediate sale of all shares, and market-timing risk.
- Strategic sale. The company is sold to a larger corporation, often a competitor or a company looking to expand into the same market. Strategic buyers frequently pay a premium because they expect to generate cost savings or revenue gains from combining the businesses.
- Secondary buyout. The company is sold to another private equity fund that believes it can drive further improvement. This is one of the most common exit routes in the industry.
- Continuation vehicle. Instead of selling, the GP transfers one or more portfolio companies from the expiring fund into a newly created vehicle managed by the same GP. Existing LPs choose whether to cash out at the transfer price or roll their investment into the new fund. This route creates a conflict of interest, since the GP is effectively acting as both buyer and seller.
The Distribution Waterfall
When exits generate cash, the proceeds flow to investors according to a contractual payment order called the distribution waterfall. Every LPA is different, but the typical sequence starts with returning LPs their original invested capital. After LPs have been made whole, most funds include a preferred return, a minimum annual rate (typically around 8%) that LPs must receive before the GP shares in any profits. The preferred return functions as a hurdle: if the fund’s investments don’t clear it, the GP earns no performance-based compensation.
Carried Interest
Once the preferred return is met, the GP receives a share of the remaining profits called carried interest, traditionally 20% of total profits above the hurdle. On a fund that generates $100 million in profit after returning capital and paying the preferred return, the GP would receive roughly $20 million as performance compensation, with the remaining $80 million going to LPs. Carried interest is the GP’s primary financial incentive and is designed to align its interests with those of the investors.
Clawback Provisions
Because the GP may receive carried interest on early profitable exits before the fund’s full performance is known, most LPAs include a clawback provision. If the fund underperforms over its full life, meaning the GP collected more carried interest than it would have earned based on overall results, the GP must return the excess to the LPs. This obligation is typically triggered when the fund is being wound down and final distributions are calculated.
The J-Curve
Plot a PE fund’s cumulative returns over time and the line resembles the letter J. In the first few years, returns are negative because you are paying management fees, funding capital calls, and the fund’s investments are still unrealized. As the GP begins selling companies, typically five to eight years in, cash flows back to investors and cumulative returns swing positive. Recognizing this pattern matters so you don’t misread early negative performance as a sign the fund is failing.
Two metrics dominate performance reporting. IRR (internal rate of return) measures the annualized rate at which your money grows, factoring in the timing of every cash flow. TVPI (total value to paid-in capital) measures the total value you’ve received or expect to receive as a multiple of the money you put in; a TVPI of 1.8x means you received $1.80 for every $1.00 invested. IRR is sensitive to timing, while TVPI captures total wealth creation regardless of timing. Looking at both gives you a fuller picture than either alone.
Tax Reporting You Should Expect
The Annual K-1
Because private equity funds are structured as partnerships, they don’t pay taxes at the fund level. All income, gains, losses, and deductions flow through to the individual partners. Each year, the fund provides you with a Schedule K-1 (Form 1065) detailing your share. Partnerships must deliver K-1s by the 15th day of the third month after the end of the fund’s tax year, or March 15 for calendar-year funds.6Internal Revenue Service. Publication 509 (2026), Tax Calendars In practice, PE fund K-1s frequently arrive late or require revisions due to the complexity of the underlying investments, which can delay your personal tax filing or force you to file an extension.
UBTI for Retirement Accounts
If you invest through a tax-exempt vehicle such as an IRA, pension fund, or endowment, you may still owe taxes on certain fund income. Unrelated business taxable income (UBTI) arises when a tax-exempt entity earns income from activities unrelated to its exempt purpose, which commonly happens when PE funds use leverage in their acquisitions. The debt-financed portion of investment income can trigger UBTI. When total UBTI across all investments in a retirement account reaches $1,000 or more, the account custodian must file Form 990-T and pay the resulting tax from the account’s cash balance. The tax does not disqualify the account from its exempt status, but it reduces your net returns.
Governance and Oversight
The Limited Partner Advisory Committee
Most PE funds establish a Limited Partner Advisory Committee (LPAC) composed of representatives from the fund’s largest institutional investors. The LPAC does not manage the fund, because doing so would jeopardize the members’ limited liability. It serves as a check on the GP, reviewing and approving potential conflicts of interest, such as when the GP wants the fund to co-invest alongside another fund it manages or when a transaction involves a related party. The LPAC also reviews requests to waive certain LPA provisions.
SEC Registration of the Manager
The Dodd-Frank Act eliminated a prior exemption that allowed most PE fund advisers to avoid SEC registration. Today, advisers to private funds with $150 million or more in assets under management in the United States generally must register with the SEC under the Investment Advisers Act.7U.S. Securities and Exchange Commission. Private Fund Adviser Overview Registration imposes compliance obligations including regular SEC examinations, disclosure of conflicts of interest on Form ADV, and recordkeeping requirements. Advisers solely to private funds with less than $150 million in U.S. assets qualify for a narrower exemption and report to the SEC as exempt reporting advisers rather than full registrants.