Coupon Calculator
Estimate coupon savings from percent-off and dollar-off coupons. Choose an application order and compare the stacked result.
Enter Values
Percentage off coupon
Fixed dollar amount off
Minimum purchase required for coupon
Result
Enter values above and click Calculate to see your result.
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Formula
The tool applies the selected order. Percentage reduces the current price, and dollar coupons are capped at the remaining price after prior discounts.
Worked Example
How Coupon Stacking Works
- Percentage-off first: reduces the price before the dollar amount is subtracted, often yielding different savings than the reverse order
- Dollar-off first: lowers the base price before the percentage discount applies, which can sometimes save more on smaller purchases
- Best order mode: this calculator automatically checks both stacking sequences and shows you the option that produces the lowest final price
- Minimum purchase rules: some coupons require a minimum spend before they activate, and the calculator enforces this threshold
Try both stacking orders to see which combination gives you the lowest final price for your specific purchase amount.
You can also calculate changes using our Shopping Discount Calculator or Discount Price Calculator.
Frequently Asked Questions
Why does coupon application order change the final price?
Each coupon reduces the price for the next one. If you apply 20% off first on a $50 item, you get $40, then subtract $5 for $35 total. But if you apply $5 off first, you get $45, then 20% off gives $36. The order changes the intermediate price that each coupon acts on.
Does the calculator enforce a minimum purchase requirement?
Yes. If the minimum purchase field is set and your original price is below that threshold, the coupon is treated as not applicable in the estimate.
When does applying the dollar coupon first save more money?
Applying the dollar coupon first tends to save more when the percentage discount is large and the dollar amount is small relative to the price. The best-savings mode checks both orders automatically.
Can I stack more than two coupons?
This calculator supports one percentage coupon and one dollar coupon. Most retailers limit stacking to two coupons per transaction, making this the most common real-world scenario.
Does this include sales tax in the final price?
No. This calculator only estimates the discounted product price. Sales tax is calculated after discounts in most jurisdictions, so apply your local tax rate to the final discounted price.
AI Assistant
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I can help you understand the coupon calculator formula, interpret your results, and answer follow-up questions.
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