
Congress is once again considering legislation that would allow 403(b) retirement plans to invest in Collective Investment Trusts (CITs). More than 30 financial industry organizations are urging the Senate to act, arguing that teachers, nonprofit employees and clergy deserve access to the same institutional investment vehicles already available in many 401(k) plans.
There is merit to that argument.
Many Collective Investment Trusts are excellent investment vehicles.
Vanguard’s Retirement Savings Trust (RST) funds are an excellent example. Low-cost institutional index strategies offered through CITs can reduce expenses for participants.
But Congress should recognize one important fact:
The CIT market of 2026 is not the CIT market of twenty years ago.
Today, the same legal structure that can deliver a low-cost Vanguard index fund can also deliver private equity, private credit, insurance-company separate accounts, lifetime-income products, and multiple layers of affiliated financial products.
Those are entirely different worlds.
Congress Is Looking at the Wrong Problem
Supporters frame the legislation as a simple fairness issue.
Why should 401(k) participants have access to institutional CITs while many 403(b) participants do not?
That is a reasonable question.
A better question is this:
If Congress expands access to CITs, what protections should participants receive in return?
Unfortunately, almost all of the lobbying has focused on expanding access.
Very little has focused on expanding fiduciary protections.
The Fee Story
The retirement business has changed dramatically.
Large defined contribution plans increasingly use index funds costing roughly 10 to 30 basis points.
Competition from Vanguard, Fidelity, BlackRock and others has pushed investment costs steadily lower.
Meanwhile, many alternative products remain dramatically more expensive.
Traditional insurance products often contain spreads and embedded compensation measured in hundreds of basis points.
Academic studies of traditional private-equity funds, including work by Oxford professor Ludovic Phalippou, have estimated total costs that can approach several hundred basis points once management fees, carried interest and other expenses are considered.
That economic reality matters.
As traditional investment management became less profitable, the industry’s fastest-growing products increasingly became those where fees are harder to observe and harder to compare.
The New Reality of Collective Investment Trusts
Many of today’s newest retirement products no longer consist simply of diversified portfolios of publicly traded stocks and bonds.
Instead, a participant’s money may move through several legal structures before reaching the underlying investments.
A target-date CIT may invest in another CIT.
That CIT may invest in an insurance-company separate account.
The separate account may invest in private-equity or private-credit partnerships.
Each legal structure has different disclosure rules.
Different accounting standards.
Different regulators.
Different fiduciaries.
Participants, however, usually receive one unit value.
The complexity is increasing.
Congress should recognize that reality before expanding these products to millions of additional retirement savers.
If Congress Passes the Bill, It Needs Guardrails
Congress should not simply expand access.
It should modernize investor protections.
At a minimum:
1. Require federally supervised trustees for ERISA CITs.
If a CIT is offered to ERISA retirement plans, it should be administered by an OCC-supervised national bank or federal savings association—not through regulatory shopping among state-chartered trust companies.
The legal structure should not depend upon selecting the least demanding supervisory regime.
2. Apply one fiduciary standard to all 403(b) participants.
One of the greatest weaknesses in today’s retirement system is that roughly half of 403(b) participants receive ERISA protections while many public-school teachers, public universities and governmental employers do not.
Congress should not expand investment complexity while leaving millions of educators outside ERISA’s fiduciary framework.
If anything, Congress should use this legislation to move toward one national fiduciary standard for all employer-sponsored defined contribution plans.
3. Full look-through fee disclosure.
Participants should see every layer of compensation.
Investment-management fees.
Insurance spreads.
Private-equity management fees.
Carried interest.
Performance allocations.
Consulting compensation.
Revenue sharing.
Affiliated compensation.
If participants ultimately bear the cost, they should see it.
4. Full look-through investment disclosure.
Participants should know when their target-date fund ultimately owns:
- private equity;
- private credit;
- insurance-company separate accounts;
- real estate partnerships;
- infrastructure funds; or
- other illiquid investments.
The legal structure should not obscure the economic investment.
5. Independent valuation standards.
Where illiquid assets are used, fiduciaries should understand who values those assets, how often they are valued, and whether any independent verification occurs.
Don’t Repeat the Mistakes of the Past
Supporters correctly point out that many CITs are less expensive than comparable mutual funds.
That is true.
But not every CIT looks like Vanguard.
Some are simple institutional index funds.
Others are becoming delivery systems for increasingly complex, higher-fee products.
Congress should not assume they are all the same.
The Bottom Line
This legislation should not be a choice between “allow CITs” and “ban CITs.”
The better approach is straightforward.
Allow low-cost institutional investment vehicles.
But require modern safeguards that reflect today’s retirement marketplace—not the marketplace that existed twenty years ago.
If Wall Street wants access to millions of additional teachers, professors and nonprofit employees, it should welcome stronger fiduciary protections, stronger fee disclosure and stronger federal oversight.
The best CITs have nothing to fear from transparency.
The worst ones do.









