Trying to add vehicle sales order forms but where do I enter how much it cost to purchase the vehicle and the prep? Or do I just put the total as the profit?

Hi @sales-vans4adven 

Usually, you would create an Invoice for the £5000 & enter the costs as Bills or Expenses in QB.

However, if you're VAT registered & inside the second-hand vehicle margin scheme, you need to be careful as QB will not calculate the margin VAT itself.

Hope this helps.