THE NUMBERS, EXPLAINED
How to use this calculator.
All redeeming accounts retain the plan for the full coupon term. Valid cycles are supplied after expiry rules; no liability recognition conclusion.
Start with your inputs
Enter eligible coupon accounts, subscription price per billing cycle (currency), coupon discount (%), coupon-valid billing cycles, assumed eligible accounts redeeming (%). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Eligible coupon accounts | 100 |
| Subscription price per billing cycle (currency) | 20 |
| Coupon discount (%) | 25 |
| Coupon-valid billing cycles | 3 |
| Assumed eligible accounts redeeming (%) | 60 |
A worked example
With the example inputs above, maximum coupon discount exposure (currency) is 1,500. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Maximum coupon discount exposure (currency) | 1,500 |
| Scenario redeemed discount exposure (currency) | 900 |
| Discount per redeemed account (currency) | 15 |
How this is calculated
Maximum coupon discount exposure (currency)
Apply discount to all eligible accounts for every valid cycle.
Scenario redeemed discount exposure (currency)
Apply assumed account redemption to maximum exposure.
Discount per redeemed account (currency)
Calculate the full-cycle coupon benefit per redeeming account.
Symbols and units
- a
- Eligible coupon accounts
- b
- Subscription price per billing cycle (currency)
- c
- Coupon discount (%)
- d
- Coupon-valid billing cycles
- e
- Assumed eligible accounts redeeming (%)
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
All redeeming accounts retain the plan for the full coupon term. Valid cycles are supplied after expiry rules; no liability recognition conclusion.
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?
Maximum coupon discount exposure (currency); Scenario redeemed discount exposure (currency); Discount per redeemed account (currency). 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: All redeeming accounts retain the plan for the full coupon term. Valid cycles are supplied after expiry rules; no liability recognition conclusion.
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 →