### Question
Can you define what C-CPI-U means?


### Answer
**C-CPI-U** is defined as the following in *26 U.S.C. § 1*:

> the Chained Consumer Price Index for All Urban Consumers (as published by the Bureau of Labor Statistics of the Department of Labor)

#### Citation:
  - *26 U.S.C. § 1*
  - Heading: **Subtitle A-Income Taxes > CHAPTER 1-NORMAL TAXES AND SURTAXES > Subchapter A-Determination of Tax Liability > PART I-TAX ON INDIVIDUALS**

