Sale Price and Checkout Checks
How to use discount results before comparing them with tax, shipping, coupon, and checkout totals.
Start with the advertised discount
A discount calculator is best for checking the advertised percent-off amount and the pre-tax sale price. It keeps the first step clear before checkout rules add more detail.
Compare against the checkout total
Stores can apply coupons, tax, shipping, membership offers, or item-level rounding in different orders. Always compare the calculator result with the final cart total before paying.
Watch stacked promotions
When offers stack, one discount may apply after another instead of all discounts applying to the original price. Use the first final price as the next original price only when that matches the store's stated rule.
FAQ
Does the discount calculator include tax or shipping?
No. It shows the percent-off amount and pre-tax final price based on the values you enter. Add local tax, shipping, and fees separately.
Why can checkout totals differ from the calculator?
Checkout systems can apply rounding, tax, shipping, coupons, store credit, or membership rules after the advertised discount.
How should I check stacked coupons?
Confirm the store's rule first. If discounts apply one after another, calculate the first discount, then use that final price as the next original price.