### Question
How does DOMESTIC INTERNATIONAL SALES CORPORATIONS define base period T-bill rate?


### Answer
Under *26 U.S.C. § 995*, **base period T-bill rate** is defined as:

> the annual rate of interest determined by the Secretary to be equivalent to the average investment yield of United States Treasury bills with maturities of 52 weeks which were auctioned during the 1-year period ending on September 30 of the calendar year ending with (or of the most recent calendar year ending before) the close of the taxable year of the shareholder

#### Citation:
  - *26 U.S.C. § 995*
  - Heading: **Subtitle A-Income Taxes > CHAPTER 1-NORMAL TAXES AND SURTAXES > Subchapter N-Tax Based on Income From Sources Within or Without the United States > PART IV-DOMESTIC INTERNATIONAL SALES CORPORATIONS > Subpart B-Treatment of Distributions to Shareholders**

