AP Style holds that a corporation is an entity that is treated as a person in the eyes of the law. It is able to own property, incur debts, sue, and be sued.
You should abbreviate “corporation” as “Corp.” when a company or government agency uses the word at the end of its name. For example,
- the Federal Deposit Insurance Corp.
Spell out “corporation” when it occurs elsewhere in a name. For example,
- the Corporation for Public Broadcasting
Spell out and lowercase “corporation” whenever it stands alone.
The form for possessives can be seen in the example below,
- General Motors Corp.’s quarterly profits