No, a pooled income fund (PIF) cannot invest in tax-exempt securities. This is one of the strictest and most absolute rules in all of charitable gift planning. Under IRC Section 642(c)(5)(C), a pooled income fund is prohibited from both accepting and investing in any security whose income is exempt from federal income tax—including municipal bonds, certain government obligations, and other tax-free instruments. The IRS enforces this rule so strictly that even the fund’s governing instrument must contain explicit written language banning these securities. According to PG Calc, charitable deductions for new PIF contributions have reached as high as 80% to 90% of funding amounts in low-interest-rate environments, making proper compliance even more important to preserve those benefits.
Here is what you will learn in this article:
- 🔒 Why the IRS bans tax-exempt securities in pooled income funds and what happens if the rule is broken
- 📜 The exact federal statutes and regulations that control this prohibition
- ⚖️ How PIFs compare to charitable remainder trusts and donor-advised funds when it comes to investment flexibility
- 💡 Real-world scenarios showing how donors and trustees can avoid costly mistakes
- ✅ A full breakdown of Do’s and Don’ts, common mistakes, and frequently asked questions
What Is a Pooled Income Fund?
A pooled income fund is a special type of charitable trust created by the Tax Reform Act of 1969. It allows multiple donors to pool their contributions into one investment fund maintained by a qualifying public charity. Each donor receives a stream of income for life based on their share of the fund’s earnings.
When a donor contributes to a PIF, they receive an immediate charitable income tax deduction based on the present value of the remainder interest that will go to the charity. The deduction amount depends on factors like the donor’s age, the expected income payments, and the IRS discount rate. Once the last income beneficiary passes away, the remaining assets attributed to that donor’s contribution go to the designated charity.
The income paid to PIF beneficiaries comes from the fund’s net investment income—dividends, interest, rents, and royalties. Capital gains stay inside the fund and are reinvested, which is a key structural difference from other charitable giving vehicles like charitable remainder trusts.
The Federal Prohibition on Tax-Exempt Securities
The Statute: IRC Section 642(c)(5)(C)
The core rule comes directly from the Internal Revenue Code. Section 642(c)(5)(C) states that a pooled income fund cannot hold “investments in securities which are exempt” from federal income tax. This is not a suggestion—it is a hard legal requirement for the fund to qualify as a PIF in the first place.
The Regulation: 26 CFR § 1.642(c)-5(b)(4)
The Treasury Department reinforces this rule through its regulations at 26 CFR § 1.642(c)-5. The regulation spells out the prohibition in three parts:
- The property transferred by any donor must not include any securities whose income is exempt from tax under Subtitle A of the Code.
- The fund itself must not invest in such securities at any time.
- The governing instrument of the fund must contain specific prohibitions against accepting or investing in such securities.
This triple layer of protection means the prohibition operates at the donor level, the fund level, and the document level. Missing any one of these layers can put the fund’s entire qualification at risk.
Why Does This Rule Exist?
The IRS designed pooled income funds so that all income flowing to beneficiaries is fully taxable as ordinary income. This is the tradeoff for the generous charitable deduction donors receive upfront. If a PIF held municipal bonds or other tax-exempt securities, the income flowing to beneficiaries would be partially or fully tax-free—which would undermine the entire tax framework.
Unlike a charitable remainder trust, which is a tax-exempt entity, a pooled income fund is not tax-exempt. It operates as a taxable trust. Because the PIF itself is taxable and passes its income through to beneficiaries, the IRS requires that all of that income be subject to federal income tax. Allowing tax-exempt securities would create a loophole where donors get a charitable deduction and receive tax-free income—a benefit the Code does not intend.
What Counts as a “Tax-Exempt Security”?
Understanding exactly which securities the IRS considers “exempt” is critical. The prohibition covers any security whose income is excluded from gross income under Subtitle A of the Internal Revenue Code.
Common Tax-Exempt Securities to Avoid
- Municipal bonds issued by state or local governments under IRC Section 103, including general obligation bonds and revenue bonds
- Private activity bonds that qualify for the tax exemption
- Build America Bonds (in certain configurations)
- Mutual funds or ETFs that hold primarily municipal bonds—even if the fund itself is not a single security, the underlying holdings can trigger the prohibition
- Tax-exempt money market funds that invest in short-term municipal obligations
Securities That Are Not Prohibited
- U.S. Treasury bonds and notes (the interest is taxable at the federal level)
- Corporate bonds
- Dividend-paying stocks
- Real estate investment trusts (REITs)
- Certificates of deposit
- Taxable money market funds
The distinction hinges on one question: Is the income from this security exempt from federal income tax? If the answer is yes, the PIF cannot hold it.
The Governing Instrument Requirement
One of the most important—and most overlooked—rules is the requirement that the PIF’s governing instrument include specific written language prohibiting tax-exempt securities. The IRS does not leave this to interpretation.
What Revenue Ruling 82-38 Requires
Revenue Ruling 82-38 provides sample provisions for PIF governing instruments. Section 01 of the ruling states that a pooled income fund must not accept from a donor, or invest in, any securities whose income is exempt from federal income tax. The governing instrument must contain express language to that effect.
Rev. Proc. 88-53: The IRS Sample Trust
The IRS published sample trust provisions in Rev. Proc. 88-53 that organizations can use when drafting their PIF declarations of trust. Taxpayers who follow these sample provisions receive assurance from the IRS that the trust meets all requirements under Section 642(c)(5), provided the trust operates consistently with its terms and is valid under local law.
If a charity creates a PIF and forgets to include the tax-exempt securities prohibition in the declaration of trust, the fund fails to qualify as a pooled income fund from the start. Donors would lose their charitable deductions, and the entire tax structure would collapse.
What the Language Should Look Like
A properly drafted prohibition clause typically reads something like:
“The Trustee shall not accept or invest in any securities or other property, the income from which is exempt from taxation under Subtitle A of the Internal Revenue Code.”
This language must appear in the declaration of trust and should be referenced in each instrument of transfer that donors sign when making contributions.
Real-World Scenarios
Scenario 1: The Donor Who Contributes Municipal Bonds
Margaret, a 68-year-old retiree, holds $100,000 in California municipal bonds. She wants to contribute them to her alma mater’s pooled income fund to receive lifetime income and a charitable deduction.
| Situation | Outcome |
|---|---|
| Margaret tries to transfer the municipal bonds directly to the PIF | The trustee must reject the contribution because the bonds produce tax-exempt income |
| Margaret sells the bonds first, then contributes the cash proceeds | The contribution is accepted because cash is not a tax-exempt security |
| The trustee accepts the bonds without checking | The fund risks disqualification under IRC 642(c)(5), and Margaret’s deduction is invalid |
| Margaret contributes the bonds and the PIF sells them the same day | Still a violation—the property transferred by the donor included tax-exempt securities |
The key lesson here is that the prohibition applies at the moment of transfer. Even if the trustee plans to sell the bonds right away, accepting them in the first place violates the rule.
Scenario 2: The Trustee Who Invests Fund Assets in a Muni Bond Fund
David serves as trustee for a university’s pooled income fund. Interest rates are low, and he is frustrated with the fund’s poor yields. He decides to invest 20% of the PIF’s assets in a high-yield municipal bond mutual fund to boost income for beneficiaries.
| Situation | Outcome |
|---|---|
| David invests PIF assets in a municipal bond mutual fund | The PIF violates the prohibition at 26 CFR 1.642(c)-5(b)(4) because the underlying income is tax-exempt |
| David moves the assets back to taxable bonds within 30 days | Damage is already done—the fund held prohibited securities, even briefly |
| The IRS audits and discovers the violation | The fund may be disqualified, and all donors’ charitable deductions could be challenged |
| David instead invests in taxable corporate bonds yielding similar rates | The investment is permissible and achieves the income goal without risking the fund |
This scenario shows that even indirect exposure to tax-exempt securities through a mutual fund or ETF can violate the rule. Trustees must scrutinize every investment vehicle for tax-exempt income.
Scenario 3: The Charity That Creates a New PIF Without Proper Language
A mid-size hospital creates a new pooled income fund to attract donors. The attorney drafting the trust document uses a generic charitable trust template and forgets to include the tax-exempt securities prohibition.
| Situation | Outcome |
|---|---|
| The trust document omits the tax-exempt securities prohibition | The fund fails to qualify as a PIF under Section 642(c)(5) from its inception |
| Three donors contribute $50,000 each and claim charitable deductions | All three deductions are potentially invalid because the fund was never a qualified PIF |
| The hospital discovers the error after two years and amends the document | The IRS may not accept a retroactive fix—the fund may need to be reestablished |
| The hospital uses the IRS sample provisions from Rev. Proc. 88-53 | The fund qualifies from the start, and all donor deductions are valid |
Consequences of Violating the Prohibition
The penalties for breaking the tax-exempt securities rule are severe and far-reaching. There is no “minor infraction” category here.
Fund disqualification. If the PIF invests in tax-exempt securities or accepts them from a donor, the fund risks losing its qualification under IRC 642(c)(5). A disqualified fund is no longer treated as a pooled income fund for tax purposes.
Loss of donor deductions. Every donor who contributed to the fund and claimed a charitable income tax deduction could have that deduction retroactively disallowed by the IRS. This can trigger back taxes, interest, and penalties for donors who did nothing wrong.
Income tax consequences for beneficiaries. The income allocation rules for PIF beneficiaries depend on the fund maintaining its qualified status. If the fund is disqualified, the tax treatment of distributions to beneficiaries becomes uncertain and potentially more costly.
Self-dealing risks. Under Section 4947(a)(2), pooled income funds are subject to certain private foundation rules, including the self-dealing provisions of Section 4941. A disqualified fund may trigger additional excise taxes if the IRS determines that prohibited transactions occurred.
Form 5227 filing issues. All pooled income funds must file Form 5227 annually with the IRS. If the fund is disqualified, previous filings may be deemed incorrect, leading to penalties of up to $130 per day for late or inaccurate filings, with a maximum of $65,000.
PIFs vs. Other Charitable Vehicles: Investment Flexibility
One of the most common questions donors ask is why they cannot just use a different vehicle if they want tax-exempt securities in their charitable portfolio. The answer lies in how each vehicle is structured under the tax code.
| Feature | Pooled Income Fund | Charitable Remainder Trust | Donor-Advised Fund |
|---|---|---|---|
| Can invest in tax-exempt securities? | No—expressly prohibited | Yes—no restriction | Yes—at sponsor’s discretion |
| Tax status of entity | Taxable trust | Tax-exempt entity | Part of sponsoring charity |
| Income to beneficiary | Taxed as ordinary income | Tiered taxation (capital gains, ordinary, tax-free) | No income to donor |
| Donor controls investments? | No | Yes (if donor is trustee) | Limited (advisory only) |
| Minimum contribution | Often low ($5,000–$10,000) | Typically higher ($100,000+) | Varies by sponsor |
| Annual payout requirement | Net income only | 5%–50% of trust assets | None required |
A charitable remainder trust can hold municipal bonds because it is a tax-exempt entity under Section 664. The trust does not pay tax on its investment income, so there is no policy reason to prohibit tax-exempt securities. A pooled income fund, by contrast, is taxable and must generate fully taxable income for its beneficiaries.
State-Level Considerations
While the prohibition on tax-exempt securities is a federal rule, state laws add layers of complexity for PIF trustees.
California
California conforms to federal tax treatment of pooled income funds under the state Revenue and Taxation Code. PIF income is also subject to California state income tax. Municipal bonds issued by California are exempt from state income tax for California residents. If a PIF could hold California munis (which it cannot), the income would be state-tax-free but the fund would be disqualified federally. The federal prohibition makes the question moot.
New York
New York imposes its own fiduciary income tax on trusts, including PIFs that are administered in the state. The trustee must file a New York fiduciary return in addition to the federal Form 5227. New York’s prudent investor standards also apply to PIF trustees, but the federal ban on tax-exempt securities overrides any state-level investment discretion.
Florida
Florida has no state income tax, which makes PIFs administered in Florida slightly more attractive for beneficiaries. However, the federal prohibition on tax-exempt securities still applies in full. A Florida-based PIF cannot hold municipal bonds issued by any state.
Multi-State Issues
When a PIF has beneficiaries in multiple states, the trustee may need to file fiduciary returns in several states. This adds to the administrative cost of maintaining the fund. The tax preparation costs for a PIF with multi-state filings can reach $4,000 or more per year, which can be a significant burden for smaller funds.
Mistakes to Avoid
Mistake 1: Accepting donated municipal bonds “temporarily.” Some trustees believe they can accept tax-exempt securities with the intention of selling them the next day. This violates the rule. The regulation prohibits the transfer itself, not just the ongoing holding.
Mistake 2: Investing in a “balanced” mutual fund that contains munis. Trustees must examine the underlying holdings of any mutual fund or ETF before investing PIF assets. A balanced fund that allocates even 5% to municipal bonds can trigger the prohibition.
Mistake 3: Omitting the prohibition language from the trust document. Without the express written prohibition in the governing instrument, the fund cannot qualify as a PIF. Using a generic trust template is one of the most common errors charities make.
Mistake 4: Confusing U.S. Treasury securities with tax-exempt securities. Treasury bonds are not tax-exempt securities for this purpose—their interest is subject to federal income tax. PIFs can and do invest in Treasuries.
Mistake 5: Assuming the IRS will allow a retroactive fix. If a PIF’s governing instrument lacks the prohibition, the IRS may not accept an amendment as a cure. The fund may need to be dissolved and reestablished, causing significant disruption to existing donors and beneficiaries.
Mistake 6: Failing to monitor commingled investments. The regulation permits PIFs to invest jointly with a charity’s general endowment fund. However, if that endowment holds tax-exempt securities, the PIF’s share must be clearly segregated from any tax-exempt holdings.
Do’s and Don’ts
Do’s
- Do include the explicit tax-exempt securities prohibition in the declaration of trust—this is required by the IRS regulations and is non-negotiable.
- Do use the IRS sample trust language from Rev. Proc. 88-53 as a starting point when drafting your PIF documents.
- Do have the trustee review every potential investment for tax-exempt income before purchasing it—a proactive screen prevents violations.
- Do ask donors to sell any municipal bonds before contributing to the PIF, then contribute the cash proceeds.
- Do consult with a qualified tax attorney before establishing a new PIF—the setup requirements are detailed and one mistake can disqualify the fund.
Don’ts
- Don’t accept tax-exempt securities from a donor under any circumstances, even with a plan to sell immediately.
- Don’t invest PIF assets in any mutual fund, ETF, or money market fund without verifying that none of the underlying holdings produce tax-exempt income.
- Don’t use a generic charitable trust template for your PIF documents—the governing instrument must include specific PIF provisions that a general template will not cover.
- Don’t assume that a small or brief investment in tax-exempt securities is harmless—there is no de minimis exception to this rule.
- Don’t commingle PIF assets with endowment funds that hold munis without strict accounting separation.
Pros and Cons of the Tax-Exempt Securities Prohibition
Pros
- Preserves PIF qualification. Following the rule ensures the fund stays qualified under Section 642(c)(5), which protects every donor’s charitable deduction.
- Simplifies income tax reporting. Because all PIF income is taxable, the trustee does not need to track or report different categories of tax-exempt versus taxable income to beneficiaries.
- Maintains IRS compliance. Strict adherence to the prohibition avoids audit triggers on Form 5227 and reduces the risk of penalties.
- Encourages higher-yield taxable investments. The prohibition pushes trustees toward taxable bonds and dividend-paying stocks, which can produce competitive yields compared to municipal bonds.
- Creates clarity for donors. Donors know exactly what they are getting—fully taxable income, a clear charitable deduction, and no surprises.
Cons
- Limits investment flexibility. Trustees cannot use municipal bonds to diversify the portfolio, even when munis offer superior risk-adjusted returns.
- May reduce income in certain markets. In environments where municipal bond yields exceed comparable taxable bond yields on a pre-tax basis, the PIF is at a disadvantage.
- Imposes a screening burden on trustees. Every investment must be reviewed for tax-exempt income, including indirect exposure through commingled funds—this takes time and effort.
- Prevents some donors from contributing. Donors whose primary assets are municipal bonds must sell them first and contribute cash, adding steps and potential tax consequences.
- Creates an uneven playing field. Charitable remainder trusts face no such restriction, which makes CRTs more attractive for donors who want investment flexibility.
Key Entities and Their Roles
Understanding who does what in the PIF ecosystem helps clarify why the tax-exempt securities rule matters for everyone involved.
The IRS writes and enforces the rules under IRC Section 642(c)(5) and the Treasury Regulations. They also publish sample trust provisions through Revenue Procedures.
The sponsoring charity maintains the pooled income fund and must retain control over it. The charity is the remainder beneficiary that receives the assets after income beneficiaries pass away.
The trustee manages the fund’s investments and distributions. The trustee bears primary responsibility for ensuring no tax-exempt securities enter the fund. Under the regulation, no donor or beneficiary (other than the charity) may serve as trustee of the fund.
The donor contributes cash or taxable securities and receives income for life plus a charitable deduction. The donor must ensure they are not transferring prohibited securities.
The income beneficiary receives a share of the fund’s net income each year. Their income is taxed as ordinary income, regardless of whether the underlying investments produced dividends, interest, or other types of income.
The SEC has provided a securities registration exemption for pooled income funds that comply with Section 642(c)(5). If the fund is disqualified because of a tax-exempt securities violation, this exemption could also be at risk.
Revenue Ruling 90-103: Related Compliance Requirements
While Revenue Ruling 90-103 does not address tax-exempt securities directly, it imposes an additional governing instrument requirement that PIF trustees must know. This ruling requires that the governing instrument of any new PIF created after February 15, 1991—or any existing PIF that accepts donations after that date—must either prohibit the fund from accepting or investing in depreciable or depletable property, or require the trustee to maintain a depreciation or depletion reserve in accordance with GAAP.
This ruling matters because it shows a pattern of how the IRS approaches PIF compliance. The agency requires that specific prohibitions or protective provisions be written into the trust document before problems arise. Trustees who are familiar with the tax-exempt securities prohibition should also confirm their documents address the depreciation reserve requirement from Rev. Rul. 90-103.
The Form 5227 Filing Process
Every pooled income fund must file IRS Form 5227 (Split-Interest Trust Information Return) each year. This form requires the trustee to report:
- The fund’s income and expenses
- Distributions to beneficiaries
- The fair market value of assets
- Information about contributions received during the year
The form implicitly requires the trustee to confirm that the fund has operated in compliance with Section 642(c)(5). If the IRS reviews a Form 5227 and discovers that the fund held tax-exempt securities, it can initiate an examination that could lead to disqualification.
For trusts with gross income exceeding $327,000, the penalty for late or inaccurate filing is $130 per day, up to a maximum of $65,000. Smaller funds face penalties of $20 per day, up to $10,000. These penalties apply on top of any consequences from fund disqualification.
Practical Tips for Trustees and Advisors
Managing a pooled income fund requires constant vigilance against tax-exempt securities creeping into the portfolio. Here are practical steps every trustee and advisor should follow.
Create an investment policy statement. The IPS should explicitly state that the PIF will not invest in any security producing income exempt from federal tax. Reference the specific regulatory prohibition at 26 CFR 1.642(c)-5(b)(4) in the policy.
Screen all contributions. Before accepting any contributed securities, verify they are not municipal bonds, tax-exempt money market instruments, or shares in a tax-exempt bond fund. Require donors to provide documentation.
Audit mutual fund holdings. If the PIF invests in any mutual fund, request the fund’s schedule of investments and confirm that zero allocation goes to tax-exempt bonds. Repeat this review at least annually.
Work with qualified counsel. An experienced estate planning or nonprofit attorney can review the governing instrument against the IRS sample provisions and flag any missing language before problems develop.
Train fundraising staff. The people who interact with potential donors should understand the prohibition. A well-meaning gift officer who accepts municipal bonds from a donor can trigger a violation. Ensure all solicitors are properly trained about what the fund can and cannot accept.
FAQs
Can a pooled income fund hold U.S. Treasury bonds?
Yes. Treasury bond interest is subject to federal income tax, so Treasuries are not prohibited securities. PIFs can and often do invest in them.
Can a donor contribute municipal bonds to a PIF if the trustee sells them immediately?
No. The regulation prohibits the transfer of tax-exempt securities to the fund, regardless of how quickly they are sold afterward.
Does the tax-exempt securities rule apply to charitable remainder trusts?
No. A CRT is a tax-exempt entity under Section 664 and faces no restriction on investing in municipal bonds or other exempt securities.
Can a PIF invest in a mutual fund that holds some municipal bonds?
No. If any underlying holdings of the fund produce tax-exempt income, the investment violates the prohibition under the Treasury Regulations.
What happens if a PIF accidentally invests in a tax-exempt security?
No safe harbor exists for accidental violations. The fund risks disqualification, and donors may lose their charitable deductions.
Is there a minimum dollar threshold before the prohibition applies?
No. There is no de minimis exception. Even one dollar invested in tax-exempt securities can trigger a violation.
Can a PIF’s governing instrument be amended to add the prohibition after the fund is created?
Yes, in some cases. However, the IRS may not treat the amendment as retroactive, meaning the fund may have been disqualified from inception if the language was missing from the start.
Do state income tax rules affect the tax-exempt securities prohibition?
No. The prohibition is a federal rule under IRC 642(c)(5). State tax rules cannot override or modify it.
Can a PIF invest jointly with a charity’s endowment that holds municipal bonds?
Yes, but only if the PIF’s share is completely segregated from any tax-exempt holdings. The regulation allows commingled investment as long as the PIF’s portion remains compliant.
Is a pooled income fund a tax-exempt entity?
No. A PIF is a taxable trust, unlike a charitable remainder trust. This is precisely why the tax-exempt securities prohibition exists.
Related reading
- Are Donor Advised Funds Taxable? + FAQs
- Are Donor Advised Funds Qualified Charitable Contributions? + FAQs
- What Is a Pooled Income Fund Donation? (w/Examples) + FAQs
- How Does a Pooled Income Fund Actually Work? (w/Examples) + FAQs
- How Are Pooled Income Funds Taxed? (w/Examples) + FAQs
- Are Charitable Lead Annuity Trusts Tax Exempt? (w/Examples) + FAQs
- What Donations Qualify for the Above-the-Line Charitable Deduction? + FAQs