Formula & method
Final = original × (1−d₁) × (1−d₂) …
Successive percentages apply to a shrinking base, so 20% then 10% is 28% off, not 30%.
Assumptions
- Inputs remain in your browser and are not saved.
- Rates are converted to the payment frequency shown.
- Results are rounded for display; internal calculations retain precision.
Example calculation
Example
$100 discounted 20% and then 10% becomes $72.
Important
Educational estimates only — not financial, tax or legal advice.