5/9/14 Not many of my clients own a car for the business only so what can be claimed can vary but the most common question I get asked is should I lease or should I buy the car. There is no one answer as it will depend on if you are sole trader or limited company, what tax you are paying, the Co2 emissions of the car, if it is new or old etc etc Then the rules change every year as well so if you are thinking of making such a decision please seek professional advice