We have gotten to know our way around fuel tax by being a part of a 35 year old trucking software company, listening to our own users and clients for the past three years, and attending the last three IFTA / IRP Audit Workshops. For example, we have learned the best ways to get your miles-per-state or kilometers-per-province data. https://etrucks.com/best-ways-record-miles-per-state/