Which document provides guidelines on reimbursable items during travel?

The Joint Travel Regulations (JTR) are a comprehensive set of guidelines that outline what expenses are reimbursable when traveling for official purposes. The JTR addresses various situations and types of travel, offering detailed instructions about allowable expenses, per diem rates, transportation methods, and other pertinent travel-related matters.

This document serves as the authoritative source for understanding the procedures and policies regarding travel reimbursements, ensuring that travelers know what costs they can expect to have covered. By following the JTR, individuals and organizations can maintain compliance with federal regulations while accurately processing travel expenses.

In contrast, local trip vouchers, travel authorization forms, and expense reports each serve different administrative roles in the travel process but do not provide the comprehensive guidelines on reimbursable items that the JTR does. Local trip vouchers are typically used for specific local trips, while travel authorization forms are meant for obtaining pre-approval before travel commences. Expense reports are used to summarize and claim reimbursement after travel has occurred.