Calculate your van benefit liability. Please note: Private use does not included use of the van to travel to and from the place of work (some other, insignificant usage may also be allowed). The van is considered to be 4 years old or more if it is at least 4 years old on the last day of the tax year. Further reductions may be available if the van is only available for part of the year; is unavailable for a period of more than 30 days; or if use of the van is shared.