### Question
What is the definition of semimonthly period?


### Answer
The definition of **semimonthly period** is as follows in *26 CFR § 40.0-1*:

> the first 15 days of a calendar month (the "first semimonthly period") or the portion of a calendar month following the 15th day of the month (the "second semimonthly period")

#### Citation:
  - *26 CFR § 40.0-1*
  - Heading: **Title 26—Internal Revenue > PART 40—EXCISE TAX PROCEDURAL REGULATIONS > CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)**

