Conduit financing is a way for a nonprofit, hospital, university, or qualifying private developer to borrow money through tax-exempt municipal bonds that a government agency issues in its own name on the borrower’s behalf. The agency, called the conduit issuer, never receives or spends the money and never pledges its credit. It lends its legal status to the deal so the bonds qualify for the lower interest rates that tax-exempt debt commands, and the borrower gets access to capital it could not otherwise reach on those terms.
The savings can be substantial. On a $50 million hospital expansion or university project, even a modest rate reduction compared to taxable commercial debt translates into millions over the life of the bonds. In exchange, the borrower accepts compliance duties that run for as long as the bonds are outstanding, and the stakes for ignoring them are high.
How the Structure Works
Under Internal Revenue Code Section 103, interest on bonds issued by state or local governments is generally excluded from the bondholder’s federal gross income.1Office of the Law Revision Counsel. 26 U.S. Code 103 – Interest on State and Local Bonds Investors who don’t owe federal tax on that interest will accept a lower yield than they would demand on comparable taxable debt. That lower yield is what the borrower pays.
The conduit, typically a state housing finance authority, a local industrial development agency, or a similar public body, issues the bonds in its own name and then lends the proceeds to the private borrower under a loan agreement. The borrower’s payments flow back through the trustee to bondholders. The conduit’s role is purely structural.
That structure also means the public issuer takes on no financial responsibility for repayment. Its taxing power and general credit are never pledged. Bondholders look only to the borrower’s revenues or the project’s cash flow, so if the borrower defaults, the public treasury is not on the hook. Some borrowers obtain credit enhancement, such as a bank letter of credit or bond insurance, which can lower the interest rate further by substituting the backer’s credit for the borrower’s. Enhancement adds its own cost, and whether it pencils out depends on the deal.
Who Can Use It
The largest group of users is organizations recognized as tax-exempt under Section 501(c)(3). Hospitals, private universities, charter schools, and other qualifying nonprofits finance capital projects through what the Code calls qualified 501(c)(3) bonds. All bond-financed property must be owned by the 501(c)(3) organization or a governmental unit, and no more than 5% of net proceeds can be used in an unrelated private trade or business.2Office of the Law Revision Counsel. 26 U.S. Code 145 – Qualified 501(c)(3) Bond
Non-hospital 501(c)(3) borrowers face a ceiling: total outstanding tax-exempt debt allocated to a single organization cannot exceed $150 million.2Office of the Law Revision Counsel. 26 U.S. Code 145 – Qualified 501(c)(3) Bond Hospitals are exempt from that cap, which is one reason health systems rely heavily on conduit financing.
For-profit borrowers can also use conduit bonds, but only for project categories Congress has designated as serving the public interest: affordable rental housing, airports, solid waste disposal, pollution control, and others. These are classified as private activity bonds and must satisfy the tests in Section 141, including a 10% limit on private business use with a matching private security or payment test.3Office of the Law Revision Counsel. 26 U.S. Code 141 – Private Activity Bond; Qualified Bond
Most private activity bonds, other than qualified 501(c)(3) bonds, also count against a state-by-state annual volume cap. For 2026, each state’s ceiling is the greater of $135 per resident or $397,625,000. Affordable housing bonds, industrial development bonds, and similar issues compete for that limited capacity, so a borrower in a high-demand state may face allocation delays or denials.
What It Costs
Beyond the bond interest rate, conduit financing carries upfront and recurring costs. Conduit authorities typically charge a one-time application fee ranging from a few hundred dollars up to about $25,000 depending on the authority and deal size, and many charge an annual administrative fee for the life of the bonds.
Bond counsel is a significant line item. These are specialized attorneys who handle the tax-compliance work and draft the trust indenture and loan agreement, and the fees scale with deal complexity. The borrower also pays the underwriter’s discount (the spread between what the underwriter pays for the bonds and what investors pay), trustee fees, and any premiums for credit enhancement.
On small deals, those fixed costs can erase the interest-rate savings. That is why most conduit issues involve at least several million dollars in proceeds; below a certain size, conventional financing is simply cheaper.
Getting Approved
The timeline from application to closing typically runs three to six months.
Application
The borrower submits a package to the conduit authority that generally includes a detailed project description, several years of audited financial statements, a narrative on the public benefit, and a projected budget. The borrower must also identify bond counsel at this stage.
TEFRA Public Hearing
Federal law requires public approval of every private activity bond issue before it is sold. Under Section 147(f), the bonds must be approved by the issuing governmental unit and by each governmental unit with jurisdiction over the project’s location. Approval requires either a vote by the applicable elected representative after a public hearing with reasonable notice, or a voter referendum.4Office of the Law Revision Counsel. 26 U.S. Code 147 – Other Requirements Applicable to Certain Private Activity Bonds In practice, nearly every issuer uses the hearing route. This is commonly called the TEFRA hearing.
Board Vote and Closing
After the hearing, the authority’s board votes. Approval is not automatic. The board weighs public benefit, financial feasibility, and compliance with the authority’s own policies. If the bonds are authorized, the underwriter sells them to investors and the transaction moves to closing, when proceeds are disbursed to the borrower.
Compliance After Closing
Closing is not the end of the borrower’s obligations. The tax exemption that makes the deal work depends on ongoing compliance, and the duties below last the full life of the bonds.
IRS Filing
The issuer must file IRS Form 8038 (for private activity bonds) or Form 8038-G (for governmental bonds) by the 15th day of the second calendar month after the close of the calendar quarter in which the bonds are issued.5Internal Revenue Service. Instructions for Form 8038-G A missed filing doesn’t automatically kill the exemption, but it requires corrective action.
Arbitrage Rebate
Section 148 bars the issuer from investing bond proceeds at a yield materially higher than the bond yield and keeping the spread. Any excess earnings must be rebated to the U.S. Treasury.6Office of the Law Revision Counsel. 26 U.S. Code 148 – Arbitrage
Rebate is paid in installments. The first computation period runs no more than five years from the issue date, and later installments follow at intervals of no more than five years. Each installment must equal at least 90% of the rebate owed as of its computation date, and payment is due within 60 days.7eCFR. 26 CFR 1.148-3 – General Arbitrage Rebate Rules A final payment within 60 days of discharge brings the total to 100%.8Internal Revenue Service. Instructions for Form 8038-T
Treasury regulations recognize spending exceptions that can eliminate the rebate obligation if proceeds are deployed on a fast enough schedule, including a six-month, an eighteen-month, and a two-year construction exception.9eCFR. 26 CFR 1.148-7 – Spending Exceptions to the Rebate Requirement Borrowers who expect construction to run beyond two years should plan for rebate calculations from day one.
Private Use Monitoring
For 501(c)(3) bonds, the borrower has to track how the financed property is actually used. Leasing space to a for-profit tenant, entering management contracts with private companies, or allowing unrelated commercial activity in the facility can all count toward private business use. If use climbs above the 5% threshold, the bonds risk losing their tax exemption.2Office of the Law Revision Counsel. 26 U.S. Code 145 – Qualified 501(c)(3) Bond This is where many borrowers run into trouble years after closing, often through routine lease arrangements no one flagged as a tax issue.
Continuing Disclosure
SEC Rule 15c2-12 requires that before an underwriter can sell municipal securities, the obligated person (the borrower, in a conduit deal) enters a written agreement to provide ongoing information to the Municipal Securities Rulemaking Board. That means annual financial statements and operating data, plus notice of material events such as payment defaults, rating changes, bankruptcy filings, or adverse tax opinions. Material event notices are due within ten business days of the triggering event.10eCFR. 17 CFR 240.15c2-12 – Municipal Securities Disclosure Borrowers who neglect continuing disclosure may struggle to access the bond market again.
If the Borrower Loses Qualifying Status
Losing 501(c)(3) status, or shifting bond-financed property to a non-qualifying use, puts the tax exemption at risk retroactively. Under Section 150, a change in use of property financed with qualified private activity bonds can affect the tax treatment of the outstanding bonds.
Treasury regulations give the borrower a limited menu of remedial actions. The most direct is redeeming the affected bonds within 90 days of the change in use. In some cases, the borrower can show that the facility has moved to a different qualifying use, or that proceeds from a disposition were redirected to another qualifying purpose.11eCFR. 26 CFR 1.150-4 – Change in Use of Facilities Financed With Tax-Exempt Private Activity Bonds
If no remedial action is taken in time, the bonds lose tax-exempt status, bondholders owe back taxes on the interest they received, and the borrower faces potential liability for the resulting losses. The borrower’s reputation and future access to the bond market take the hit as well. That outcome is why competent bond counsel and a disciplined post-issuance compliance program are a built-in cost of using conduit financing, not an optional add-on.