I have created a new supplier called ‘Expenses - Approved Mileage’ and generated a new purchase invoice form where I can add all the mileage. I understand I then pay this in one go from Proprietors drawing account.
My question is: Some customers pay mileage, when I add a mileage charge to their invoice, does that still go general sales ?
If you did want to separate this from your actual sales figures (just so you know how much of your income is actual sales), you could create a separate nominal code for this in your Chart of Accounts report.
As @FaradayKeynes mentions however, it would come in the sales range of 4000-4999.