The problem
A driver app might show £900 earned this week.
It is easy to think of that £900 as “what I made”.
But the car had to travel to produce it.
Fuel or electricity cost money. The vehicle also has other real-world costs such as insurance, maintenance and depreciation.
So gross earnings and actual business profit are not the same thing.
Why it matters
If you only look at gross fares, two weeks can appear equally good even though one used much more fuel or involved far more mileage.
Gross earnings are still useful. They tell you how much fare revenue was recorded.
The mistake is treating them as the final answer.
A better way to think about the money is in layers.
Layer 1 — Gross fares
Money paid for completed work before driver costs.
Layer 2 — Known or estimated running costs
For example, fuel or electricity that can be estimated from the analysed distance and vehicle settings.
Layer 3 — Wider business costs
Insurance, finance, depreciation, maintenance, tax, licensing and other costs may still need to be accounted for separately.
Layer 4 — True profit
The amount left after all relevant business costs and tax treatment are considered.
FareWorth should not call Layer 2 “profit”.
How to work it out
Start with gross completed fares.
Subtract the running costs you can estimate reliably.
Then keep a separate record of wider business expenses rather than pretending they do not exist.
A simple reporting calculation can be:
Completed fares − estimated fuel/energy = after-fuel estimate
That is useful, but it still stops short of net profit.
Simple worked example
Illustrative weekly example
- Completed fares: £900
- Estimated fuel/energy cost: £140
After-fuel estimate:
£900 − £140 = £760
It would be wrong to label the £760 as final profit without considering other costs.
The driver may still have expenses such as:
- insurance;
- vehicle finance or depreciation;
- servicing and repairs;
- tyres;
- licensing;
- cleaning;
- tax;
- phone/data or other business expenses.
If those wider costs came to £210 for the period, the simple illustration would then be:
£760 − £210 = £550 before any further tax/accounting treatment
The £210 is only an illustrative figure. FareWorth does not currently claim to calculate every one of these business costs.
What to watch out for
Do not mix cash flow with profit
A payment entering your bank account is not proof that the whole payment is profit.
Some costs happen later
Tyres, servicing and repairs may not happen every week, but the vehicle is still being used up over time.
Tax is personal
Tax treatment depends on the driver’s circumstances and jurisdiction. This guide is not tax advice.
Estimates are still estimates
Fuel and electricity use can change with traffic, weather and driving style.
How FareWorth helps
FareWorth can use the driver’s configured vehicle and fuel or energy settings to add estimated running-cost context to ride analysis.
In reporting, After Fuel Est. can be shown where the required information is available.
That gives the driver a more useful view than gross fares alone while keeping the label honest.
FareWorth does not need to pretend that After Fuel Est. is the driver’s full net profit.
Practical takeaway
- Gross fares are revenue, not final profit.
- Fuel or energy is one important cost, not every cost.
- Keep wider business expenses separate.
- Treat After Fuel as an estimate, not a final accounting result.
- Use several layers of information rather than one headline total.