47 CFR §64.1002

1. (a)Investment and expenses not used and useful in the ordinary course. The following investments and expenses are presumed not used and useful (and thus unreasonable):
   1. (1)Personal expenses, including but not limited to personal expenses for food and beverages, housing, such as rent or mortgages, vehicles for personal use, and personal travel;
   2. (2)Tangible property not logically related or necessary to offering voice or broadband services;
   3. (3)Political contributions;
   4. (4)Membership fees and dues in social, service and recreational, or athletic clubs or organizations;
   5. (5)Penalties or fines for statutory or regulatory violations; and
   6. (6)Penalties or fees for late payments on debt, loans, or other payments.
2. (b)Non-customary investments and expenses. Unless customary for similarly situated companies, the following investments and expenses are presumed not used and useful (and thus unreasonable):
   1. (1)Personal benefits, such as gifts, housing allowances, and childcare, that are not part of taxable compensation;
   2. (2)Artwork and other objects that possess aesthetic value that are displayed in the workplace;
   3. (3)Aircraft, watercraft, and off-road vehicles used for work and work-related purposes;
   4. (4)Cafeterias and dining facilities;
   5. (5)Charitable donations;
   6. (6)Entertainment;
   7. (7)Food and beverage expenses for work and work-related travel;
   8. (8)Membership fees and dues associated with professional organizations;
   9. (9)Scholarships; and
   10. (10)Sponsorships of conferences or community events.