Does anyone know if "Commercial Truck Insurance" is tax deductable ... I am looking to upgrade my insurance to cover my trailer and equipment ... I was told that commercial truck insurance would do just that and of course it is more expensive than just the normal insurance ... Can I deduct the difference between what normal insurance would cost vs commercial truck insurance ... My accountant seems to think so and that is what scares me, she is thinking ... I have been using the mileage deduction for tax purposes since my truck is both for personal and business use ... Any comments, or suggestions ( excluding getting a new accountant - she's hot ) would fall under the heading of being most appreciated ... Thanks .