2. the amount upon which interest is charged
3. within an actuarial context, the principal is the actuary's client/employer.
In situations where the actuary has both a client and an employer, the facts & circumstances will determine which one is – or whether both are – the principal. Such situations commonly arise for consulting actuaries.
In some legal proceedings, the principal will be determined by the rules of evidence/procedure.
4. in the law of agency, a principal is a person who has permitted (or engaged) another person/entity to act:
(b) in accordance with the principal’s direction; and
(c) subject to the principal’s control.
