Use your own preparation time. This is before personal taxes and excludes costs not entered.
Try this with your own numbersFormula and worked example
Hourly return = (fee − other costs) / ((lesson + preparation) / 60)
| Input | Example |
|---|---|
| Fee per lesson | 50 |
| Lesson time | 60 minutes |
| Preparation and admin | 30 minutes |
| Other cost per lesson | 5 |
| Calculated result | 30 per hour |
Choose reliable inputs
Connect teaching time, preparation, attendance and room capacity to each lesson or class. For this music teaching calculation, use attendance records, teaching schedules and room costs and a consistent definition of one lesson.
- Teaching time: include the portion belonging to this lesson or reporting period, and record where the value came from.
- Preparation: include the portion belonging to this lesson or reporting period, and record where the value came from.
- Studio overhead: include the portion belonging to this lesson or reporting period, and record where the value came from.
Use the same currency for every money input. Do not mix weekly costs with monthly revenue, or count the same expense in both an itemised cost and allocated overhead.
What happens to my hourly return when preparation doubles?
Use your own preparation time. This is before personal taxes and excludes costs not entered.
What if this input changes?
If fee per lesson rises by 10%, this example changes by 3.3333 per hour. This shows the effect of one change; it does not predict what will happen.
Open the calculator, save your baseline, then change the input supported by the least reliable estimate in your records. Compare both scenarios before committing to a price or capacity promise.