Fuel is one of the biggest profit killers for ADIs. Use the calculator below to estimate your fuel cost per mile, your weekly fuel spend, and the fuel cost per lesson. Then track it automatically in InstructorOS alongside income, expenses, profit and tax estimates.

Choose the method you prefer. MPG + fuel price is usually the best reflection of your real-world cost.
Tip: Use your real-world average (not the brochure figure).
Fuel is only one cost. If you want real take-home clarity, track insurance, repairs, training and everything else — then use the tax estimator.
Because a “£35 lesson” isn’t £35 when fuel spikes. Fuel cost per lesson gives you a clean baseline for pricing, planning your diary, and protecting your profit.
Compare lesson prices against your real costs, not vibes.
If miles creep up, profit drops — this makes it obvious.
Higher lesson volume can increase miles. Track the impact.
Knowing fuel cost helps you set aside cash before you get stung.
£15/month after your 7-day trial. No spreadsheets. No admin chaos.
Start your 7-day trial and track costs properly all year.