Private equity law is the body of rules that governs how private investment funds raise capital from wealthy and institutional investors, acquire private companies, manage them, and eventually sell them for a profit. It pulls together federal securities regulation, state partnership and corporate law, and federal tax law into one connected framework. Every stage of a fund’s life, from the first fundraising pitch to the final distribution check, runs on legal structures that decide who holds power, who bears risk, and how the money moves.
The Securities Rules That Make Private Funds Possible
Private equity funds do not register their offerings with the SEC. They rely on exemptions in federal securities law, and those exemptions are the starting point for the whole field.
Most funds raise capital under Rule 506 of Regulation D. Rule 506(b) lets a fund accept an unlimited number of accredited investors plus up to 35 non-accredited investors who are financially sophisticated, but prohibits public advertising of the offering.1eCFR. 17 CFR 230.506 – Exemption for Limited Offers and Sales Rule 506(c) permits general solicitation, but every purchaser must be accredited and the fund must take reasonable steps to verify that status.2Investor.gov. Private Placements Under Regulation D
An individual is accredited by having a net worth over $1 million excluding a primary residence, or annual income over $200,000 individually ($300,000 with a spouse or partner) for the past two years with a reasonable expectation of continuing at that level.3U.S. Securities and Exchange Commission. Accredited Investors Entities generally need investments or assets above $5 million. The thresholds exist because federal law assumes wealthy and institutional investors can absorb the risks of illiquid, unregistered securities without the protections of public-market disclosure.
A fund that pools investor capital to buy securities would also qualify as an “investment company” under the Investment Company Act of 1940, which would trigger mutual-fund-style regulation. PE funds avoid that by qualifying under Section 3(c)(1), which exempts a fund with no more than 100 beneficial owners that does not make a public offering, or Section 3(c)(7), which lifts the investor cap but requires every investor to be a “qualified purchaser” — generally individuals with at least $5 million in investments or institutions with at least $25 million.4Office of the Law Revision Counsel. 15 USC 80a-3 – Definition of Investment Company Larger funds almost always use 3(c)(7) because it lets them accept more investors.
How a Private Equity Fund Is Built
With the securities framework in place, the fund’s real architecture lives in its formation documents. The limited partnership agreement is the central contract. It defines the relationship between the general partner, who manages the fund and makes investment decisions, and the limited partners, who contribute most of the capital but take no role in daily operations. That separation is not just organizational. A limited partner who gets involved in management risks losing the liability shield that caps losses at the amount committed to the fund.5U.S. Securities and Exchange Commission. PMF TEI Fund LP Amended and Restated Agreement of Limited Partnership
Why Delaware
Most PE funds organize as Delaware limited partnerships. Delaware’s statute explicitly adopts a policy of giving “maximum effect to the principle of freedom of contract and to the enforceability of partnership agreements.”6Delaware Code Online. Delaware Code Title 6 Chapter 17 Subchapter XI In practice, parties can customize nearly every term of their relationship, and Delaware courts enforce what the parties wrote rather than substituting default rules. That contractual flexibility, backed by a deep body of case law on partnership disputes, is the reason Delaware is the default.
The Economics: Fees, Carry, and the Fund’s Life
The partnership agreement spells out how the GP gets paid. The standard structure includes a management fee of roughly 2% of committed capital during the investment period, which covers operating costs and salaries. The real upside comes from carried interest: the GP’s share of investment profits, usually 20% of gains above a preferred return hurdle. Most funds set that hurdle at 8%, so the GP earns no carried interest until LPs have received an 8% annualized return.
The agreement also sets the fund’s typical ten-year life, with the first five years designated as the investment period during which the GP can deploy capital into new deals. After that, the GP manages and exits existing investments. Capital commitments are drawn down in installments as the GP identifies targets, not collected all at once.
Tax Law and the Three-Year Carry Rule
The partnership form is chosen primarily for tax efficiency. A PE fund operates as a pass-through entity, so the fund itself pays no income tax. Each partner reports their share of gains and losses on their own return through a Schedule K-1.7Internal Revenue Service. Partners Instructions for Schedule K-1 Form 1065 That avoids the double taxation that applies to corporations, where profits are taxed at the entity level and again when distributed as dividends.
The most contested area of PE tax law is how carried interest is taxed. Under Section 1061 of the Internal Revenue Code, gains from an “applicable partnership interest” held in connection with performing services, which is what carried interest is, must be held more than three years to qualify for long-term capital gains rates. If the GP sells an investment before that mark, the profits are recharacterized as short-term capital gains and taxed at ordinary income rates, which can be roughly double the long-term rate.8Office of the Law Revision Counsel. 26 USC 1061 – Partnership Interests Held in Connection With Performance of Services The three-year requirement, added in 2017, was a compromise between those who wanted carried interest taxed entirely as ordinary income and those who defended the prior one-year standard, and it directly shapes deal timing: managers now have a strong tax incentive to hold investments at least three years.
The Law of the Deal: Leveraged Buyouts
The transactional core of PE law is the leveraged buyout, where a fund acquires a company using a mix of its own equity and a large amount of borrowed money secured against the target’s own assets.
The legal work begins long before signing. Due diligence surfaces risks that can destroy value after closing: pending lawsuits, regulatory violations, intellectual property weaknesses, environmental contamination, and unfavorable contracts. Those findings shape how the deal is structured. A stock purchase transfers the entire legal entity with all its liabilities, known and unknown. An asset purchase lets the buyer choose which assets and contracts to take and leave unwanted liabilities with the seller.9Penn State Law Review. Asset Acquisitions Assuming and Avoiding Liabilities Most large PE acquisitions are structured as stock purchases because assets like government contracts and licenses can be hard to transfer one by one.
The purchase agreement is where risk gets split between buyer and seller. One of the most heavily negotiated provisions is the material adverse effect clause, which lets the buyer walk away if the target’s business deteriorates significantly between signing and closing. Sellers push to carve out broad economic downturns, industry-wide changes, and the effects of the deal announcement itself. Buyers push back. When a buyer invokes an MAE and the seller disagrees, the result is usually expensive litigation.
Debt financing adds another legal layer. Credit agreements and security documents set the interest rates, repayment schedules, and restrictive covenants limiting the company’s ability to take on more debt, sell major assets, or make distributions without lender approval. The equity rights of the fund and the security interests of the lenders then govern the company together for years after closing.
Antitrust and National Security Approvals
Large acquisitions face regulatory review before they can close. The Hart-Scott-Rodino Act requires buyers and sellers to notify the Federal Trade Commission and the Department of Justice before closing deals above thresholds adjusted annually for inflation. The agencies then have a waiting period to decide whether the acquisition would substantially reduce competition.
Funds pursuing “roll-up” strategies, acquiring multiple small companies in the same industry to build a dominant platform, face heightened scrutiny. The FTC and DOJ have flagged serial acquisitions as an antitrust concern, noting that a pattern of smaller deals can create market dominance as effectively as a single large merger, and have proposed requiring more detailed disclosure of prior acquisitions in premerger filings.10Federal Trade Commission. FTC and DOJ Seek Info on Serial Acquisitions Roll-Up Strategies Across US Economy
When a fund has foreign LPs or is controlled by non-U.S. persons, acquisitions in sensitive industries may trigger a mandatory filing with the Committee on Foreign Investment in the United States. Under the Foreign Investment Risk Review Modernization Act of 2018, foreign investors acquiring interests in U.S. companies involved in critical technology, critical infrastructure, or sensitive personal data must file a declaration at least 30 days before closing. The fund’s structure, the identity of its controlling parties, and the governance rights of foreign LPs all factor into whether that filing is required.
Governing the Portfolio Company
Once a deal closes, the legal focus shifts to how the fund runs the company it now owns. The shareholders’ agreement typically gives the fund the right to appoint a majority of the board. Those directors owe fiduciary duties of care and loyalty to the corporation itself, meaning they must act in the company’s best interests even when those interests diverge from the fund’s preferences. The resulting tension is real: the fund wants to maximize return within a defined time horizon, while the directors’ duty runs to the company.
PE firms often sit on the boards of multiple portfolio companies in overlapping industries. Delaware law lets corporations waive the doctrine of corporate opportunity in their charter, so a director who learns of a business opportunity through one company is not obligated to offer it to every affiliated company first. Courts have not yet tested the enforceability of overly broad waivers, so drafting that identifies specific categories of opportunities carries less risk than a blanket renunciation.
To align management with the fund, PE firms create equity incentive plans that give executives a stake in the upside, usually with vesting schedules and repurchase rights that let the company buy back unvested equity if an executive leaves. Separately, the fund often charges the portfolio company monitoring fees, transaction fees, or director fees for ongoing strategic support.11U.S. Securities and Exchange Commission. Management Services Agreement The partnership agreement typically requires that a portion of those fees, commonly 50% to 100%, be credited against the management fee LPs pay. These fee offsets are heavily negotiated during fundraising because they determine whether the GP is effectively collecting fees twice.
SEC Oversight of the Fund Manager
The Dodd-Frank Act of 2010 eliminated the “private adviser exemption” that had previously let most PE fund managers avoid SEC registration.12U.S. Securities and Exchange Commission. Rules Implementing Dodd-Frank Act Amendments to the Investment Advisers Act of 1940 Today, an investment adviser with $110 million or more in assets under management generally must register with the SEC unless another exemption applies.13U.S. Securities and Exchange Commission. Transition of Mid-Sized Investment Advisers From Federal to State Registration Smaller advisers register with their home state.
Registered advisers file Form ADV, which discloses the firm’s ownership, business practices, conflicts of interest, and disciplinary history. Managers advising private equity funds with $2 billion or more in combined PE assets also file Form PF, which gives the SEC confidential data on positions, leverage, and risk.14U.S. Securities and Exchange Commission. Form PF Failing to file Form PF is itself an enforcement violation.15U.S. Securities and Exchange Commission. SEC Charges Seven Private Fund Advisers for Repeatedly Failing to File Form PF
SEC enforcement against PE firms covers overcharging management fees, failing to disclose conflicts of interest, misallocating fund expenses, and insider trading.16U.S. Securities and Exchange Commission. SEC Charges New York-Based Investment Adviser With Breaching Fiduciary Duty by Overcharging Management Fees to Private Funds Registered firms must maintain compliance programs that monitor employee trading, prevent misuse of material non-public information, and verify investor identities through anti-money laundering and know-your-customer procedures during fundraising.
Exits, Waterfalls, and Clawbacks
The whole legal structure exists to deliver a profitable exit. The three common paths are a sale to a strategic corporate buyer, a secondary buyout to another PE fund, or an IPO. A trade sale means a new round of purchase agreements and due diligence. A secondary buyout adds negotiation with another sophisticated financial buyer. An IPO triggers registration under the Securities Act and ongoing public-company disclosure.
After exits, the partnership agreement’s distribution waterfall decides who gets paid and in what order. A typical waterfall has four tiers: LPs receive their invested capital back, then the preferred return (usually 8% annualized), then the GP receives a “catch-up” until it has reached its carried interest percentage, and the rest is split between GP and LPs at the agreed carry ratio.
The waterfall also drives whether a clawback is likely. In a “whole of fund” (European-style) waterfall, the GP earns no carried interest until all investments are liquidated and LPs have received their full capital and preferred return. In a “deal by deal” (American-style) waterfall, the GP earns carried interest on profitable deals while other investments remain unrealized, which risks overpaying the GP if later deals lose money. When that happens, the clawback provision requires the GP to return previously distributed carried interest to make LPs whole. Some funds hold back part of the carry in escrow to make sure the GP can actually pay a clawback if one is triggered.
When all investments are exited and distributions are complete, counsel prepares the final tax documents and dissolution filings to wind down the fund and release the partners from their remaining obligations.