Travel Authorization/Travel Advance and Expense form is an all-in-one form that can be used to authorize and plan travel, prepay travel expenses and get reimbursed for travel expenses upon return from a trip.

A "travel form" is a broad term for any official document required by a government or airline to facilitate the movement of people across borders. In 2026, the most common type is the Electronic Travel Authorization (ETA), such as the upcoming ETIAS for Europe or the ESTA for the United States. These forms are usually completed online before travel and collect personal data, passport details, and security background information. Other examples include Customs Declaration forms (often now digital like the "Visit Japan Web" or "ArriveCAN"), and Health Declaration forms which were popularized during the pandemic but are still used by some countries to track infectious diseases. Additionally, a "Travel Expense Form" is a common internal business document used by employees to list and claim reimbursement for business-related travel costs. Whether digital or paper, the purpose of these forms is to ensure security compliance, manage immigration flow, and collect data for national safety and economic monitoring.