Quick guide
How to use this calculator
- Enter values from one real situation and keep currencies, quantities, and periods consistent.
- Use the optional fields only when they apply; the calculator will keep every entered adjustment visible in the result.
- Compare the component outputs and read the calculator-specific boundary before making a purchase or plan.
Calculation method
Calculation method
Valid promotion saving = fixed amount or eligible subtotal × percentage, limited by its entered cap and the eligible subtotal.
Entered fixed decimals use exact rational arithmetic wherever the task involves money, ratios, or allocations. Whole packages, tables, seats, and items round only where the real task requires indivisible units.
Worked example
Worked example
On an 80 basket, 15% off saves 12 while 10 off a 60 minimum saves 10, so the percentage promotion wins.
Valid promotion saving = fixed amount or eligible subtotal × percentage, limited by its entered cap and the eligible subtotal.
Supported inputs
Precision and limits
Your scenario
No live price, promotion, retailer policy, tax, cultural norm, household consumption rate, attendance rate, or media speed is supplied automatically.
Plan, not a guarantee
Results organize visitor-entered assumptions. They do not guarantee availability, attendance, product life, savings, suitability, or contractual rights.
Precision and privacy
Inputs stay in this browser. Invalid denominators, contradictory counts, impossible percentages, and unsupported ranges return explicit messages rather than misleading results.
Calculator-specific boundary
Enter one mutually exclusive offer per line. A zero cap means no separate cap. Eligibility, exclusions, stacking permission, reference-price law, and seller acceptance must be checked from the actual terms.
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