Examples
Examples
Try the starting example
- Current eligible basket ($)
- 90
- Full-basket tiers in increasing order: minimum $, discount %
- 0,0 100,10 150,20
- Candidate additional items at undiscounted value ($)
- 30
- Current basket payment ($)
- $90.00
- Payment with candidate additions ($)
- $108.00
- Incremental payment ($)
- $18.00
- Undiscounted value of candidate additions ($)
- $30.00
- Increase in basket discount ($)
- $12.00
- Additional spend to next tier after candidate (USD)
- $30.00
Try another scenario
- Current eligible basket ($)
- 90
- Full-basket tiers in increasing order: minimum $, discount %
- 0,0 100,10 150,20
- Candidate additional items at undiscounted value ($)
- 70
- Current basket payment ($)
- $90.00
- Payment with candidate additions ($)
- $128.00
- Incremental payment ($)
- $38.00
- Undiscounted value of candidate additions ($)
- $70.00
- Increase in basket discount ($)
- $32.00
- Additional spend to next tier after candidate (USD)
- No higher tier
Calculation method
Calculation method
Current basket payment ($)
Use the highest entered threshold reached and apply its percentage to the full eligible basket, half-up to US cents.
Payment with candidate additions ($)
Apply the same rule to old basket+candidate undiscounted amount.
Incremental payment ($)
New payment−old payment; negative values remain visible if a threshold creates that arithmetic outcome.
Undiscounted value of candidate additions ($)
Entered candidate value, without claiming its utility.
Increase in basket discount ($)
New discount−old discount.
Additional spend to next tier after candidate (USD)
Next threshold−new undiscounted basket, or explicit no-higher-tier status.
Symbols and units
- a
- Current eligible basket ($)
- b
- Full-basket tiers in increasing order: minimum $, discount %
- c
- Candidate additional items at undiscounted value ($)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A full-basket tier comparison using stated thresholds and rates. It does not recommend unnecessary spending, check eligibility or imitate a platform’s marginal-tier implementation.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Shopify: discount types, thresholds and combination background; this tool uses its displayed rules ↗
Background reading; this does not imply endorsement or independent review of SumFizz.