The Illinois General Assembly approved House Bill 5487 on Saturday, sending a measure to Gov. JB Pritzker that would close what lawmakers describe as a loophole allowing private-equity firms to exert control over state law practices. The legislation strengthens existing state rules that prohibit nonlawyers from managing legal firms, targeting corporate arrangements that critics say grant outside investors de facto operational authority.
State Sen. Michael Hastings, a Democrat who sponsored the bill, said the measure addresses an evolving corporate strategy. “Private-equity companies are starting to get creative with how they influence law firms,” Hastings said. “It is time for Illinois to act decisively and shut down this loophole that is being abused.”
The bill specifically targets management-services organizations, or MSOs, a structure increasingly used across medicine, accounting and legal sectors. Under these arrangements, a law firm pays fees to an outside corporate entity to handle back-office operations, compliance, technology and marketing. When those MSOs are backed by private-equity capital, critics argue that buyout firms effectively dictate law firm strategy and profitability through complex fee-sharing agreements and stock-transfer mechanisms that skirt traditional ownership bans.
Gov. JB Pritzker, a Democrat, now has 60 days to sign or veto the legislation after the General Assembly passed it earlier in the session and the state Senate delivered final approval over the weekend. His decision will determine whether Illinois codifies explicit restrictions on how outside capital interacts with the state’s legal providers.
Illinois is not moving in isolation. The measure reflects a coordinated state-level response to the financial restructuring of the legal profession. Colorado lawmakers passed a bill in May restricting outside investment in law firms, though Gov. Jared Polis has not yet acted on it. California advanced a similar proposal in April, though it has stalled in the legislature. Each state’s legislation varies in scope, but all focus on neutralizing the MSO model as a vehicle for corporate influence.
Deals involving private equity so far have largely centered on regional or boutique law firms rather than major national practices. Bloomberg reported this week that Dallas-based Trive Capital is backing Los Angeles firm Massumi + Consoli through an MSO structure. In late May, Uplift Investors-backed MSO announced a deal with Hughes & Coleman Injury Lawyers, following a similar arrangement with a Louisiana personal-injury firm earlier in the year.
Attorneys tracking these transactions say the trend is expanding. Larger firms are exploring whether to accept outside capital, with the Financial Times reporting that McDermott Will & Schulte and Cohen & Gresser have both considered taking on private-equity investment.
A major driver of the capital search is the anticipated disruption of legal work by artificial intelligence. Law firms face mounting pressure to acquire computing infrastructure, train legal AI models and restructure service delivery, making outside capital more attractive. Private-equity firms have already begun positioning for this shift, with Blackstone recently investing in the AI-driven legal startup Norm AI.
Many lawyers and lawmakers contend that the influx of buyout capital could fundamentally alter the relationship between attorneys and their clients. Where traditional law practice relies on professional independence and fee-based retention, MSO arrangements introduce corporate profit targets, standardized billing metrics and third-party oversight into legal decision-making.
If Gov. Pritzker signs the bill, Illinois will join a small but growing group of states explicitly prohibiting these financial entanglements. The outcome will be closely watched by legal industry stakeholders evaluating whether similar corporate-control restrictions will spread to other professional service sectors or become a standard feature of state-level regulatory frameworks.