Third-party litigation funding and liability insurance

Third-party litigation funding (TPLF) is money from an outside investor who pays for a lawsuit, or advances cash against it, in exchange for a share of any recovery and usually with no repayment if the case is lost. For a business that carries liability insurance, the practical effect is indirect: funded plaintiffs may hold out longer and demand more, insurers say that pushes up claim costs (the social inflation debate), and no federal rule yet makes the funding visible to the defense.

There is real disagreement about how much funding changes outcomes. This guide sets out what is documented, where disclosure rules stand in 2026, and what a policyholder should do when a funded case lands on the desk.

What litigation funding is

Funding comes in several forms, and they affect liability insurers differently.

• Commercial case funding. An investor pays legal fees for a business plaintiff in a patent, antitrust, contract or arbitration case and takes a share of the proceeds. Westfleet Advisors, which tracks the U.S. commercial litigation finance market, reported that capital commitments rose about 23% in 2025 from 2024, a rebound after two straight years of decline, according to its 2025 market report page.
• Portfolio funding. A funder lends to or invests in a law firm against a group of cases rather than a single claim. The Advisory Committee's materials describe this structure as particularly associated with mass torts and as one of the hard drafting problems for any disclosure rule.
• Consumer advances. A person with an injury claim receives cash against a future settlement, often to cover living costs. West Virginia regulates this form under its litigation financing statute, Chapter 46A, Article 6N.

Funders say they enable meritorious claims that would otherwise go unbrought and that they screen out weak ones. Insurers and business groups respond that profit-driven capital, sometimes from foreign or institutional investors with little transparency, encourages claims and inflates demands. Triple-I lists TPLF among the drivers of legal system abuse, alongside plaintiff attorney advertising, rising contingency fees and eroding damage caps. Evidence on the size of the effect is limited, so treat strong claims from either side with caution. The wider context is in nuclear verdicts and social inflation: why liability costs keep rising.

Why it matters at the settlement table

A liability insurer evaluating a claim wants to know who can accept an offer and what that party needs. A funded plaintiff adds a third voice:

1. Return thresholds. A funder expects a multiple of its investment or a share of the recovery, and an offer below that figure may be rejected even when the plaintiff would take it.
2. Settlement control. Some agreements require the funder's consent to settle. The District of New Jersey's disclosure rule asks specifically whether the funder's approval is necessary for litigation or settlement decisions.
3. Duration. If the funder is paying costs, the plaintiff can afford to go to trial. The defense's cost-of-delay leverage weakens.
4. Policy-limits demands. A funded plaintiff may send a time-limited demand for the policy limit. In many states, refusing a reasonable demand within limits can expose the insurer to liability for the excess, discussed in insurer bad faith: what it is and the remedies, and the insured faces personal exposure above limits.

A defendant who learns of funding mid-case cannot always find out the details, which is the heart of the disclosure debate.

Where disclosure rules stand

There is no general federal disclosure requirement. As of the Civil Rules Advisory Committee's April 14, 2026 agenda book, its Third-Party Litigation Funding Subcommittee "is continuing its work in considering a disclosure rule," and the subcommittee's report said drafting one is difficult: disclosing the fact of funding ought not often pose problems, but required disclosure of all the details would raise serious work-product questions. The same agenda book lists five bills before Congress, including the Litigation Transparency Act of 2025 (H.R. 1109), the Protecting Our Courts from Foreign Manipulation Act of 2025 (H.R. 2675, which the committee's materials describe as reported favorably by the House Judiciary Committee), and the Tackling Predatory Litigation Funding Act (S. 1821).

The sources are the H.R. 1109 text, the S. 1821 text, the Wisconsin statute, the Kansas legislature's SB 54 page and the Advisory Committee's agenda book on uscourts.gov. Other states have acted as well, and the content differs: some require disclosure, some limit discovery, some restrict foreign funders or register funders. Check your state before assuming any particular rule applies (the wider reform picture is in tort reform and liability insurance: what changes for business buyers), and confirm the current status of the federal bills, which can change between sessions.

A worked example

Say a regional trucking company with a $1 million primary auto policy and a $5 million umbrella is sued over a crash. Plaintiff's counsel sends a demand for the $1 million primary limit, open for 10 days. The company's defense counsel suspects the plaintiff's law firm is funded through a portfolio arrangement. This example is hypothetical.

What should the company do?

1. Tell the broker and both insurers immediately and send the demand to the umbrella carrier. The primary insurer must evaluate the demand within the time given, and delay can matter if a verdict later exceeds limits.
2. Ask defense counsel whether the court or the state requires disclosure of funding. In a district with a rule like New Jersey's, or in Wisconsin, the answer comes without a fight.
3. Do not treat the funding as a coverage issue. Funding of the plaintiff is not an exclusion under the defendant's policy; it affects negotiating dynamics, not what the policy covers. See the insurer's duty to defend: what triggers it and when it ends.
4. Understand consent rules. If the policy has consent-to-settle terms, read them; see the hammer clause: what happens if you refuse a settlement.
5. Document your side. If a limits demand is refused and a larger verdict follows, the quality of the insurer's evaluation will be examined.

If your business is the funded plaintiff

Some businesses fund their own claims, for example a patent holder or a company in an arbitration. Read the funding agreement's control and consent clauses before signing, ask who decides on settlement, and understand how the funder's share changes the economics of an early offer. This is a contract and litigation decision for your attorney, not an insurance one, although when your business is sued: working with your insurer covers the insurance side if the opponent counterclaims.

Key takeaways

• TPLF is outside investment in a lawsuit in return for a share of the recovery, in commercial, portfolio and consumer forms.
• Insurers see funding as a driver of higher demands and longer cases; funders see it as access to justice. The measurable effect on liability claim costs is not settled.
• There is no federal disclosure rule yet. A federal subcommittee is still studying one, several bills are pending, and rules exist in places such as the District of New Jersey, Wisconsin and Kansas.
• Funding of the plaintiff does not change what your policy covers, but it can change settlement dynamics, including limits demands and the exposure above limits.
• If you are sued, report fast, check disclosure rules in your court, and know your umbrella and consent-to-settle terms.