Andrey1:
burnley-si:
put it to contexted, one of my trucks last week did £2500 + vat used £585 in fuel and did 1350 miles roughly and minus £700 in drivers wages£1.28 per mile
Where’s the insurance, truck finance(if any), operator rental, night out costs ■■
I`d be looking to take it out of the £562.50 cost pot
£2500.00 - Gross
£1915.00 - After Fuel
£1215.00 - After Wages [Night Outs included ?, if not, take them out of the cost pot]
£1125.00 - After Trailer Rental [Guess]
£562.50 - In the Cost Pot
£562.50 - In the Gross Profit Pot - 
22.5%
It`s not a bad return for providing a unit + driver, and collecting the paperwork on a Saturday afternoon
Very simplistic maths, but it`s worked for me over the years