A Membership Interest Purchase Agreement, or MIPA, is the contract used to buy or sell ownership interests in a limited liability company. It is the LLC equivalent of a stock purchase agreement: the buyer acquires the seller’s membership interest, which represents a share of the LLC’s profits, losses, voting rights, and management authority. Because the buyer is taking over an ownership stake in the entity itself rather than picking out individual assets, a MIPA agreement carries a specific set of risks and protections that both sides need to understand before anyone signs.
What a MIPA Actually Transfers
The single most important thing to understand about a MIPA is what travels with the ownership interest. The buyer steps into the seller’s shoes as an owner of the LLC. The entity keeps existing, with every contract, debt, lease, lawsuit, and tax obligation still attached. Liabilities ride along with the membership interest, so the buyer inherits everything, known and unknown.
That is a different deal from an asset purchase, where the buyer picks which assets to acquire and generally walks away from the seller’s debts and legal exposure. A MIPA buyer who discovers an undisclosed tax bill or a pending lawsuit after closing owns that problem, because they now own the entity that owes it. This is why the representations, warranties, and indemnification sections of a MIPA tend to be heavily negotiated.
The structure has real advantages that can outweigh the liability risk. Transferring the LLC itself is often simpler than transferring dozens of individual assets, contracts, and licenses one by one. Permits, leases, and government approvals tied to the LLC usually stay in place without new applications or third-party consent. For businesses with complex regulatory licenses, that continuity alone can make a MIPA the preferred structure.
Purchase Price and Working Capital Adjustments
The purchase price can be a fixed dollar amount, but in practice it often includes an adjustment tied to the LLC’s working capital at closing. The parties set a target working capital figure based on the company’s normal operating needs. After closing, an accountant calculates actual working capital as of the closing date and compares it to the target. If the company had more than expected, the buyer pays the seller the difference. If it had less, the seller refunds the shortfall.
This matters because weeks or months can pass between signing and closing. The business keeps running during that gap, collecting receivables, paying bills, drawing down inventory. The adjustment keeps either side from getting a windfall from normal fluctuations. The agreement will spell out the accounting rules, a timeline for the post-closing calculation, and a process for resolving disputes over the numbers.
Payment terms vary. Some deals are all-cash at closing. Others involve installment payments, a seller-financed promissory note, or earnout provisions where part of the price depends on the LLC’s future performance. Each structure shifts risk differently. An earnout protects the buyer from overpaying if the business underperforms. A promissory note leaves the seller exposed to the buyer’s creditworthiness long after closing.
Representations and Warranties
Representations and warranties are factual statements each party makes about itself and, for the seller, about the LLC being sold. They force disclosure before closing and create a contractual basis for the buyer to seek compensation afterward if something turns out to be false.
Sellers typically represent that the LLC is properly organized, in good standing, and authorized to do its business. A real-world agreement filed with the SEC states that the company is “a limited liability company duly organized, validly existing and in good standing” and “has all requisite limited liability company power and authority to own, lease and operate its properties.”1U.S. Securities and Exchange Commission. Membership Interest Purchase Agreement Beyond the organizational basics, sellers typically represent that financial statements are accurate, that there are no undisclosed liabilities, that the company complies with applicable laws, that there is no pending or threatened litigation, and that the membership interests themselves are free of liens or other encumbrances.2U.S. Securities and Exchange Commission. Better For You Wellness, Inc. – Membership Interest Purchase Agreement Buyers make fewer representations, usually confirming they are properly organized, authorized to enter the agreement, and financially able to close.
Not every representation carries equal weight. Agreements usually distinguish “fundamental” representations from ordinary ones. Fundamental representations cover the most basic assurances: that the seller actually owns the interests, that the LLC exists, that the seller has authority to sell. A breach of a fundamental representation typically exposes the seller to greater liability and for a longer time than a breach of an ordinary representation about something like the accuracy of a customer list.
Indemnification, Caps, and Escrow
Indemnification is what gives the representations teeth. It obligates one party to compensate the other for losses caused by breaches of the agreement. In a MIPA, the seller typically indemnifies the buyer for losses from inaccurate representations, breached covenants, undisclosed liabilities, and unpaid taxes attributable to the pre-closing period.1U.S. Securities and Exchange Commission. Membership Interest Purchase Agreement
Those obligations are rarely unlimited. Most MIPAs include three negotiated limits:
- A deductible, sometimes called a basket, that blocks indemnification claims until total losses pass a specified dollar amount. This filters out minor issues and nuisance claims.
- A cap on the seller’s total indemnification exposure for ordinary representation breaches, often set as a percentage of the purchase price. Breaches of fundamental representations and fraud claims are typically carved out of the cap.
- A survival period that sets how long each type of representation can support a claim. Ordinary representations commonly survive 12 to 18 months after closing. Fundamental representations often survive five to six years or until the applicable statute of limitations runs. Once the period ends, the buyer loses the right to bring an indemnification claim based on that representation.
Having a right to indemnification is only useful if the seller still has money when the claim comes. Buyers often negotiate an escrow holdback: a portion of the purchase price goes to a third-party escrow agent at closing and sits there for the length of the survival period. Valid indemnification claims come out of escrow first. Whatever is left when the survival period ends gets released to the seller. The size of the escrow, usually a percentage of the total price, is one of the most contested points in the whole deal.
Covenants and Closing Conditions
Covenants are promises about what the parties will and will not do, both before and after closing. Pre-closing covenants matter because the seller keeps running the LLC during the gap between signing and closing, and the buyer does not want the business damaged in the meantime. Common pre-closing covenants require the seller to operate in the ordinary course, maintain insurance, preserve relationships with key customers and suppliers, and refrain from entering material contracts without the buyer’s consent.
Post-closing covenants often include non-compete and non-solicitation restrictions that keep the seller from starting a competing business or poaching the LLC’s employees and customers after the sale. Enforceability varies by jurisdiction, so these restrictions need to be reasonable in scope, duration, and geographic reach.
Closing conditions are the gates that must open before either side has to go through with the deal. Typical conditions include:
- The other party’s representations are still accurate as of the closing date, not just the signing date.
- Each party has performed its pre-closing covenants.
- No material adverse change has hit the LLC’s business or financial condition since signing.
- Required consents from lenders, landlords, or key contract counterparties are in hand.
- Any required regulatory or antitrust approvals have been obtained.
If a condition is not met, the party it protects can walk away without liability or waive the condition and close anyway. The agreement sets a drop-dead date; after that date, either side can terminate if the conditions still haven’t been satisfied.
Consent From Other LLC Members
A MIPA does not operate in a vacuum. Most LLCs have an operating agreement that restricts how membership interests can change hands, and those restrictions directly affect whether a sale can close. Operating agreements commonly require approval from other members or from a manager before any transfer. Some give existing members a right of first refusal, letting them buy the interest on the same terms before an outside sale can proceed.
Transfers among family members, affiliates, or existing members often get a pass on these approvals, but sales to outside buyers usually trigger the full consent process. If the operating agreement demands unanimous or majority consent and a member refuses, the deal can stall or fall apart. A well-drafted MIPA addresses this risk by making closing conditional on obtaining whatever consents the operating agreement requires. Some transfers may also be restricted for tax reasons: if the LLC is taxed as a partnership, a transfer that would change its tax classification can be prohibited regardless of member consent.
Tax Treatment of Membership Interest Sales
Tax consequences are a major reason parties pick a MIPA over an asset purchase, and in larger deals the tax analysis often drives the structure.
For the seller, gain from the sale of a membership interest is generally treated as capital gain under IRC Section 741.3Office of the Law Revision Counsel. United States Code Title 26 – Section 741 Capital gain rates are meaningfully lower than ordinary income rates for most sellers, which is a clear advantage over an asset sale, where part of the gain can be taxed as ordinary income depending on the type of assets sold.
There is an important exception. If the LLC holds what the tax code calls “hot assets,” meaning unrealized receivables and inventory, the portion of the sale price attributable to those assets is taxed as ordinary income rather than capital gain.4eCFR. 26 CFR 1.751-1 – Unrealized Receivables and Inventory Items This recharacterization can be an unpleasant surprise if nobody has looked carefully at the LLC’s balance sheet. A service business with large accounts receivable, for example, can carry a substantial hot-assets component that converts what the seller expected to be capital gain into ordinary income. When hot assets are involved, the LLC must file IRS Form 8308 to report the transaction.5Internal Revenue Service. About Form 8308, Report of a Sale or Exchange of Certain Partnership Interests Both parties need their own tax advisors to allocate the purchase price between the capital gain and ordinary income portions, because getting that allocation wrong can trigger penalties and interest on underpaid taxes.
For the buyer, the tax treatment turns on whether a Section 754 election is already in place or is made in connection with the transaction. Without the election, the buyer inherits the LLC’s existing tax basis in its assets, which may be well below what the buyer paid. With a 754 election, the buyer gets a step-up in the tax basis of the LLC’s assets to reflect the actual purchase price, which produces larger depreciation and amortization deductions going forward. Whether to make this election is one of the most consequential tax decisions in a MIPA transaction.
When Federal Antitrust Filings Are Required
Membership interest acquisitions can trigger reporting under the Hart-Scott-Rodino Act. For 2026, the size-of-transaction threshold is $133.9 million; if the value of the interests being acquired exceeds that amount, the parties generally must file a pre-merger notification with the Federal Trade Commission and the Department of Justice and observe a waiting period before closing.6Federal Trade Commission. Current Thresholds Additional size-of-person thresholds apply to transactions valued between $133.9 million and $535.5 million, requiring that one party have at least $267.8 million in total assets or net sales and the other have at least $26.8 million.7Federal Trade Commission. FTC Announces 2026 Update of Jurisdictional and Fee Thresholds for Premerger Notification Filings Transactions valued at $535.5 million or more must be reported regardless of the parties’ size. Failing to file when required can result in penalties of over $50,000 per day. Even in deals that fall well below the thresholds, parties should confirm with counsel whether an exemption applies, because the rules around non-corporate interests have nuances that do not show up in straightforward stock purchases.
Due Diligence Before You Sign
Because a MIPA buyer inherits the LLC’s full legal and financial history, due diligence is the buyer’s primary defense against overpaying or walking into a disaster. Representations and warranties only help after closing if something has gone wrong. Due diligence is the chance to find the problems before they become yours.
A thorough review usually covers:
- Financial records, including audited or reviewed financial statements, tax returns, accounts receivable aging, and outstanding debt. Watch for gaps between what the seller represents and what the numbers actually show.
- Material contracts: customer and supplier agreements, leases, loan documents, and any contract with a change-of-control provision that the membership transfer could trigger.
- Litigation and claims, including pending or threatened lawsuits, regulatory investigations, and the LLC’s dispute history. This is the single most dangerous area in a MIPA deal because the buyer inherits all of it.
- Tax compliance: filed returns, taxes paid, worker classification. Unpaid payroll taxes can create personal liability for the new owners.
- Environmental exposure for LLCs that own real property or operate in regulated industries. Cleanup obligations can dwarf the purchase price.
- Intellectual property, including the ownership and registration status of trademarks, patents, copyrights, and trade secrets. Confirm the LLC actually owns what the seller says it owns.
Findings from diligence often lead to a renegotiated price, a specific indemnity for an identified risk, or in some cases a buyer walking away from the deal. Rushing or skipping this work to close faster is the most expensive mistake buyers make in MIPA transactions.