Use only customers actually eligible in the selected period, and keep new sales separate from renewals.
Try this with your own numbersFormula and worked example
Renewal revenue = eligible customers × renewal rate × fee
| Input | Example |
|---|---|
| Customers eligible for renewal | 200 |
| Renewal rate | 80 % |
| Renewal fee per customer | 300 |
| Calculated result | 48,000 |
Choose reliable inputs
Plan materials, travel and crew time before committing to a price. For this commercial janitorial calculation, use a completed job sheet, supplier quotes and a crew schedule and a consistent definition of one contract visit.
- Shift staffing: include the portion belonging to this contract visit or reporting period, and record where the value came from.
- Supplies: include the portion belonging to this contract visit or reporting period, and record where the value came from.
- Supervision: include the portion belonging to this contract visit 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.
Should all customers be used in a renewal forecast?
Use only customers actually eligible in the selected period, and keep new sales separate from renewals.
This is revenue before service costs, refunds, taxes, and cancellations.
What if this input changes?
If customers eligible for renewal rises by 10%, this example changes by 4,800 . 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.