Fill out a Travel Authorization Form (TAR). This comprehensive guide on "how to charge clients for travel expenses" will walk you through the essential steps while keeping their satisfaction in mind.Business travel is tax deductible! Every dollar you spend on travel related to your business may help you legally save on taxes. Therefore, a State Employee renting a vehicle for travel outside Maryland must rely on personal auto insurance or separately purchased vehicle insurance. Take on your out-of-town business trips. If you do not fit any of these categories,. Take on your out-of-town business trips. If you do not fit any of these categories,. Key coverage areas for the policy should include: Distance; Mode of transportation; Traveling time; Accommodation costs.