Title 26 › Subtitle Subtitle A— - Income Taxes › Chapter CHAPTER 1— - NORMAL TAXES AND SURTAXES › Subchapter Subchapter B— - Computation of Taxable Income › Part PART IV— - TAX EXEMPTION REQUIREMENTS FOR STATE AND LOCAL BONDS › Subpart Subpart C— - Definitions and Special Rules › § 150
Defines words and limits when interest on loans tied to tax-exempt bonds cannot be deducted. Key terms: "bond" means any debt obligation; "governmental unit" does not include the United States or its agencies; "net proceeds" means issue proceeds minus amounts held in required reserve or replacement funds; "501(c)(3) organization" means a nonprofit that meets section 501(c)(3) and is tax-exempt; property counts as owned by a government if it is owned on the government’s behalf; "tax-exempt" means bond interest is excluded from gross income. The rule stops people from claiming an interest deduction in several cases. If a home bought with proceeds of a tax-exempt mortgage bond is not the mortgagor’s main home for a continuous period of at least 1 year, interest that accrues during that time cannot be deducted, unless the Secretary allows relief for undue hardship. Interest is also not deductible when a project financed by private activity bonds was supposed to qualify for tax-exempt treatment but the property does not meet the required rules, including rental projects, exempt-facility projects, or qualified small-issue bonds. If part of a facility funded by a 501(c)(3) bond is used in a business by someone other than the charity (even though the charity still owns it), interest for the period of that use is not deductible. If a facility must be owned by a government or 501(c)(3) to get tax-exempt status but is not so owned, interest is disallowed. When amounts paid for use are not called interest, they are treated like interest up to the actual interest amount. Partial uses are prorated. The Treasury Secretary may issue rules to carry out these limits. Certain special bonds are treated in particular ways. A qualified scholarship funding bond is treated like a state or local bond; it is issued by a nonprofit corporation set up to buy federally insured student loans at a state’s request and required to use income to buy more loans or pay the U.S. If such an issuer changes structure, tax-exempt status can continue only if specified transfers, assumptions of debt, ownership of senior stock, or a change to 501(c)(3) status with at least 80 percent independent board members are met. "Senior stock" must have priority in liquidation, a set redemption right within 10 years of the election, and no superior equity. A board "independent member" is one who gets no pay for services to the transferee. Bonds issued for a qualified volunteer fire department are treated as local government bonds if the department serves an area lacking other firefighting services, is required by written agreement to provide those services, and at least 95 percent of net proceeds go to a firehouse or firetruck; such bonds are generally not treated as private activity bonds except for two narrow tax rules.
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Internal Revenue Code — Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 150
Title 26 — Internal Revenue Code
Last Updated
Apr 6, 2026
Release point: 119-73