Know when a new logbook is required Keeping a car logbook may be required to accurately calculate the business-use percentage of vehicle expenses (e.g., fuel, registration, insurance and depreciation) for tax deductions. Taxpayers can keep the same logbook for their car for five years, but there are circumstances where they may need a new one during that period. Relying on a logbook that no longer represents a client’s work-related travel…  Read more