KPMG sees private market investments reshaping 401(k) plans

Private markets are moving toward the 401(k) menu

KPMG’s “The New Frontier of Retirement” treats private-market access in 401(k) plans as more than a Wall Street experiment. The core argument is simple: retirement design is starting to shift from a narrow, public-market model toward something broader, more customizable, and much harder to run well. That creates a real opening for stronger diversification and possibly better long-term returns, but it also introduces a set of tradeoffs that benefits teams, fiduciaries, and workers will have to understand in plain English.

For anyone at KPMG who works in employee benefits, audit, or tax, the story lands in familiar territory. This is not just about adding a shiny new fund line-up. It is about whether a retirement plan built around daily liquidity and easy valuation can absorb private equity, private credit, venture capital, real estate, or other illiquid assets without undermining governance, participant understanding, or the sponsor’s risk posture.

Why the idea is gaining traction now

The shift is being pushed by two forces at once: regulatory signals and product innovation. That matters because private markets were long treated as something for pensions, endowments, sovereign wealth funds, and other institutional pools, not ordinary defined-contribution plans. The momentum changed when the Trump administration issued a 2025 executive order directing federal agencies to broaden retirement plan participants’ access to alternative assets, including private equity, private credit, venture capital, real estate, and cryptocurrency.

The Department of Labor also rescinded a 2021 information letter that had questioned whether private investments belong in retirement plans. At the same time, industry commentary noted that the DOL still had not yet delivered guidance required under SECURE 2.0. Put together, that has made the idea more plausible, but not fully settled. The policy direction is clearer; the operating rules are not.

What the opportunity really is

Supporters see democratization. They argue that ordinary workers should not be locked out of asset classes that have historically been available to wealthier investors and large institutions. That argument has real appeal in a retirement system that holds enormous amounts of capital. One industry source put the U.S. 401(k) system at more than $9 trillion in assets, while another described it as roughly a $12 trillion market opportunity.

That scale explains why asset managers, consultants, and law firms are racing to frame the debate. PwC has described private markets in 401(k) plans as a $1 trillion opportunity, and that framing is less about marketing than about market structure. If even a small slice of plan assets moves into private-market strategies, the business implications for managers, recordkeepers, consultants, and fiduciaries become significant.

The catch: complexity lands on the plan, not the pitch deck

The challenge is that private assets do not fit neatly into the architecture of a traditional 401(k). These plans are built around daily pricing, easy comparisons, and frequent liquidity. Private-market investments bring valuation lag, limited transparency, more complex fees, and the possibility that participants may not be able to access their money when they want it.

That is why critics are uneasy about the current rush to expand access. They warn that opening the door without strong fiduciary safeguards could increase legal exposure for plan sponsors and create confusion for workers who may not understand what they are buying. The issue is not just whether private assets can outperform public-market benchmarks over time. It is whether participants can actually judge what they own when pricing is delayed and comparison tools are imperfect.

What this means for plan sponsors and fiduciaries

For sponsors, the question is less “Should we offer private markets?” and more “Can we do this without creating a governance headache?” That means thinking through recordkeeping, daily liquidity management, disclosure, valuation protocols, and the education burden on participants. It also means deciding how much complexity belongs in a retirement menu that employees often expect to use passively.

The fiduciary standard is especially important here. Goodwin has noted that the U.S. 401(k) system is the biggest test for opening private markets to mainstream investors because it combines a huge asset base with some of the tightest fiduciary constraints in the world. That is the pressure point: if the product is too complex to explain, too hard to price, or too risky to administer, the sponsor owns the fallout.

Why KPMG professionals should care

This is where the story gets very practical for KPMG’s own consulting model. Employee-benefits teams can use this framework to advise clients on whether private-market exposure belongs in a defined-contribution plan at all, and if so, what guardrails have to exist before it does. Those guardrails could include tighter disclosure, limits on allocation, stronger education, and more careful governance around valuation and liquidity.

Tax and audit professionals have their own stake in the shift. A plan design change like this can ripple into reporting, controls, and oversight, especially if sponsors experiment with structures that look nothing like the traditional target-date lineup. For a firm that lives inside the details of controls and client risk, this is not a side issue. It is a live advisory problem.

What workers may see on their side of the screen

For employees, the biggest change is not abstract. It is what shows up in the retirement menu and how hard it is to understand. Private-market options could offer broader diversification and the possibility of better long-term outcomes, but they also ask workers to tolerate assets that may be harder to value, harder to compare, and harder to exit.

That makes education central. If workers are asked to make choices inside a 401(k) that look more like institutional portfolio decisions, the burden of understanding rises with the complexity of the menu. The risk is that “more choice” becomes a kind of false promise unless the plan also gives employees the tools to understand liquidity, fees, and performance context.

The bigger question: better outcomes or just more machinery?

This is the tension KPMG’s piece gets at most directly. Retirement savings are no longer a static, one-size-fits-all exercise, but that does not automatically mean every innovation improves outcomes. Some changes make the system more flexible and resilient; others mostly add layers of cost, explanation, and liability.

Private markets in 401(k)s may turn out to be a meaningful upgrade for some plans and a costly distraction for others. The difference will come down to execution: how sponsors design the menu, how fiduciaries document their decisions, and how clearly workers can understand the tradeoffs before they commit their savings.