When getting a travel insurance quote, the trip cost must be entered. Trip cost should be the total amount of the pre-paid and non-refundable expenses associated with the trip. If the trip cost is unknown at the time of the travel insurance quote, then the traveler has two options. First, the traveler can enter the trip costs that are known at that time. Later, when the traveler incurs additional trip costs, they can update their travel insurance policy then. The second option is to estimate the expected trip cost. However, if the actual trip cost ends up being less than the estimated amount, then the insurance cannot be reduced. This means that there is a possibility of unnecessarily paying more in premium, but can avoid having to update the trip cost later. If the actual trip cost ends up exceeding the estimated amount, then the traveler can update the policy at that time. Always refer to the certificate of insurance for details.