Hi there, @callumpearson28-. Let me assist you with your query.
I’m assuming you are using QuickBooks Self-Employed, they are using the simplified expense method (with flat rates) to calculate the allowable business expense for your car, van, or motorcycle. The rate is based on the mileage you drive.
- Cars and goods vehicles: 0 - 10,000 miles - 45p
- Cars and goods vehicles: After 10,000 miles - 25p
- Motorcycles: 24p
You can refer to this article to know more about Simplified expense method.
If you want to do the calculation by yourself, you might want to give this link a visit.
Feel free to let me know if you need anything else. I'll be here to help. Keep safe!
