Legal Definitions - terminus a quo

Terminus a quo is a Latin phrase that translates to "the point from which." In legal terms, it refers to the specific starting point or the earliest possible time from which a calculation begins, an action can be taken, or a legal right or obligation commences. It marks the initial event or condition that triggers subsequent periods, deadlines, or legal consequences.

• Example 1: Statute of Limitations

  Imagine a situation where a product defect causes an injury. The law often sets a "statute of limitations," which is a deadline by which a lawsuit must be filed. The terminus a quo for this deadline would typically be the date the injury occurred or the date the injury was discovered. From this specific starting point, the clock begins to run for the injured party to initiate legal action.

• Example 2: Contractual Performance

  Consider a contract for building a new home. The agreement might state that construction must begin within 60 days of the buyer securing all necessary financing and permits. The date on which the buyer successfully obtains the final permit and loan approval would be the terminus a quo. This is the precise moment from which the 60-day period for the builder to commence work is calculated, triggering their obligation.

• Example 3: Calculation of a Lease Term

  A commercial lease agreement might specify that a five-year lease term begins on the date the tenant takes physical possession of the property, even if rent payments are deferred for the first month. In this scenario, the date the tenant receives the keys and occupies the premises serves as the terminus a quo. This is the definitive starting point for calculating the entire duration of the lease, regardless of when other financial obligations might activate.