Hi all newbie post alert. Apologies I am new to being self employed and new to completing a return. I have attached a screenshot of my current situation which is up-to-date with accurate financial information. I don’t know if I should have added the mileage on as a business vehicle transaction as mileage is calculated In a separate box on the homepage? The main reason for this post is should my estimated tax at this stage be zero or should I start putting to one side monies to cover a future tax bill? Finally what happens to and National insurance...Should I be paying in Anything at this stage? Thanks in anticipation of your help. Phil