Title 26 › Subtitle A — Income Taxes › CHAPTER 1 — NORMAL TAXES AND SURTAXES › Subchapter B — Computation of Taxable Income › PART IX — ITEMS NOT DEDUCTIBLE › § 279
Limits how much interest a company can deduct when it borrows money to buy another company or its assets. A company cannot deduct interest on that kind of purchase debt to the extent the interest is more than $5,000,000 minus certain interest on related purchase obligations that are not treated as “purchase debt” here. “Corporate acquisition indebtedness” means debt issued to pay for stock or for assets when the buyer gets at least two-thirds (by value) of the seller’s business assets. To count as this kind of debt, the debt must be subordinated to ordinary trade creditors or clearly subordinated to major unsecured debt, and it must either be convertible into the buyer’s stock or come with an option to buy that stock. Also, on a test date, the buyer must have either a debt-to-equity ratio over 2 to 1 or projected earnings no more than three times the annual interest on the debt. Projected earnings are the average annual earnings over a three-year period (computed without reducing for interest, depreciation, taxes, and most distributions); banks and finance companies get special adjustments. The rule is worked out at the end of the tax year when the debt is issued, can carry forward for later years with rules for changes in control, and excludes some foreign-company buys. Refinancings aren’t treated as new debt, and if another company guarantees the debt it’s treated the same. Calling an instrument a bond does not make it debt for other tax rules.
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Internal Revenue Code, Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 279
Title 26, Internal Revenue Code
Last Updated
Sep 22, 2026
Release point: 119-110