### Question
How is the "business interest income" defined?


### Answer
The term **business interest income** is defined in *26 U.S.C. § 163* as follows -

> the amount of interest includible in the gross income of the taxpayer for the taxable year which is properly allocable to a trade or business

#### Citation:
  - *26 U.S.C. § 163*
  - Heading: **Subtitle A-Income Taxes > CHAPTER 1-NORMAL TAXES AND SURTAXES > Subchapter B-Computation of Taxable Income > PART VI-ITEMIZED DEDUCTIONS FOR INDIVIDUALS AND CORPORATIONS**

