Chapter 18. Bank Service Companies 12 U.S. Code §1861. Short title and definitions 12 U.S. Code §1862. Amount of investment in bank service company 12 U.S. Code §1863. Permissible bank service company activities for depository institutions 12 U.S. Code §1864. Permissible bank service company activities for other persons 12 U.S. Code §1865. Prior approval for investments in bank service companies 12 U.S. Code §1866. Services to nonstockholders or nonmembers 12 U.S. Code §1867. Regulation and examination of bank service companies