SEC proposal to redefine 'small' advisers could reshape M&A activity and compliance strategies

The Securities and Exchange Commission has proposed sweeping changes to how it defines “small” for registered investment advisers, a move that would substantially lower the compliance bar for the vast majority of firms but could complicate mergers and acquisitions and post-deal integrations.

According to PlanAdviser, the SEC’s proposal would reclassify roughly 96% of registered investment advisers (RIAs) as small rather than large by raising the asset-based threshold for small-entity status from $25 million in assets under management (AUM) to $1 billion. The SEC said in a press release that the amendments are intended to better capture the types and numbers of investment advisers and companies that qualify as small entities under the Regulatory Flexibility Act and to tailor its rulemaking analyses to reflect the regulatory challenges those entities face.

The proposed change would mean many more firms are treated as small for RFA analyses, with industry commentary offering differing estimates of the impact. InvestmentNews and other industry summaries have reported that the new $1 billion line would bring roughly three quarters of RIAs into the small-entity category, a view echoed by Fairview Invest. The variation in these figures reflects differing data sets and definitions used by analysts but underscores that the change would encompass a far larger portion of the advisory business than the current rule.

Supporters say the move is intended to reduce one-size-fits-all regulatory burdens. “It’s an absurd jump to go from $25 million to $1 billion, it’s a 40-times jump, but I think it’s probably more about relieving administrative burden than anything else,” Peter Campagna, managing partner in Wise Rhino Group, told PlanAdviser. “You shouldn’t have the same scrutiny as BlackRock if you were managing under $1 billion.” Industry observers expect the lighter compliance footprint to encourage advisers to break away from wirehouses and to accelerate the trend toward independence, potentially increasing the pool of firms available for transactions.

However, advisers, consultants and dealmakers warn the redefinition could introduce friction in M&A activity, particularly in post-acquisition integration. “While more tailored regulatory requirements for smaller RIAs are directionally positive, they could introduce additional complexity in post-acquisition integration, particularly as firms scale or are consolidated into larger platforms,” Kim Kovalski, a managing director at MarshBerry, said to PlanAdviser. She added that those complexities , while manageable for sophisticated buyers , could require deliberate integration planning. Kovalski highlighted potential pain points such as the need to upgrade policies or reporting practices, changes in compliance staffing or systems, and designing staged integration plans to avoid regulatory missteps.

Valerie Mirko, an Armstrong Teasdale partner who leads the firm’s securities regulation and litigation practice, told PlanAdviser she expects the upward trend in adviser M&A seen last year , record activity according to data from Echelon Partners and MarshBerry , to continue despite the definitional shift. At the same time she observed that some individual owners might delay or forgo sales if lighter compliance burdens reduce the urgency to exit.

The SEC is also proposing related updates to the Investment Company Act merger rules to modernise the regulatory framework for fund combinations and to account for small entities, indicating a broader reassessment of how scale should influence oversight. The SEC’s press materials frame the package as an effort to ensure the agency’s analyses under the Regulatory Flexibility Act reflect contemporary market structure and the realities of smaller advisers and funds.

Regulatory distance will remain an important theme. Legal and industry sources emphasise that the change affects how the SEC evaluates rule impacts and crafts exemptions or tailored requirements under the RFA, rather than automatically altering substantive regulatory obligations across every rule. Observers note the distinction matters for buyers and sellers weighing compliance costs and integration timelines in deals.

As firms and advisers digest the proposal, dealmakers are likely to stress rigorous due diligence and phased integration roadmaps where transactions cross the $1 billion threshold in platform AUM. Industry data cited by MarshBerry and Echelon Partners showing strong transaction volumes in the prior year suggest demand among acquirers remains robust, but the practicalities of combining firms operating under different compliance regimes may reshape transaction structures, pricing and timelines.

The SEC’s proposal opens a comment period that will allow firms, trade groups and other stakeholders to weigh in before any final rule is adopted. In the interim, advisers, buyers and their counsel will be recalibrating both strategic plans and operational playbooks to account for an altered small‑entity landscape that promises both regulatory relief and new integration challenges.