A rate can look generous until you count the empty miles, the wait at the depot, and the day the van is in the workshop. Write down the advertised figure, the hours they want, the miles they state, and whether fuel is yours. Add a daily slice of insurance, finance or rental, tyres and servicing. Many owner-drivers budget a standing-cost pot before they pay themselves. Then divide what is left by the hours the day actually runs. Supplied-van work is a different sum. The vehicle cost sits with the operator. Your time, and any fuel you are told to buy, still matter. Get that in writing. The calculator on Courier Drivers does this breakdown. Change the miles or the wait and run it again before you say yes. Figures and examples on this site are illustrative. They are not financial, legal or insurance advice. Check current rules with the relevant authority or a qualified adviser.
What if the miles change after I start?
Run the numbers again. A rate that worked on 80 miles may not work on 140, especially if waiting is unpaid.
Is this official guidance?
No. It is a working method, not financial advice.