THE NUMBERS, EXPLAINED
How to use this calculator.
One plan per ticket/account and one reporting period. Handling time must include after-contact work if it is to be costed.
Start with your inputs
Enter support ticket counts by subscription plan, mean handling time by plan (minutes), active accounts by plan, loaded support labour rate (currency/hour). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Support ticket counts by subscription plan | 100,50 |
| Mean handling time by plan (minutes) | 6,12 |
| Active accounts by plan | 200,50 |
| Loaded support labour rate (currency/hour) | 30 |
A worked example
With the example inputs above, support labour hours by plan is 10, 10. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Support labour hours by plan | 10, 10 |
| Support cost by plan (currency) | 300, 300 |
| Support cost per active account by plan | 1.5, 6 |
How this is calculated
Support labour hours by plan
Multiply tickets by mean handling time.
Support cost by plan (currency)
Price measured handling work at the supplied labour rate.
Support cost per active account by plan
Allocate each plan cost across its active accounts.
Symbols and units
- a
- Support ticket counts by subscription plan
- b
- Mean handling time by plan (minutes)
- c
- Active accounts by plan
- d
- Loaded support labour rate (currency/hour)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
One plan per ticket/account and one reporting period. Handling time must include after-contact work if it is to be costed.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Support labour hours by plan; Support cost by plan (currency); Support cost per active account by plan. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: One plan per ticket/account and one reporting period. Handling time must include after-contact work if it is to be costed.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Describe and Identify Cost Drivers ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →