Calculate coupon and duplicate discount
Compare the order, limit, minimum purchase, and free shipping conditions of precision and fixed-amount coupons. Also check the input order, reverse order, and unused coupon amounts.
Required except for selection. Input is calculated in this tab and disappears on refresh.
Result
Click ‘Calculate All’ after input.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
Calculation method and criteria
Tool for comparing payment amounts across two discount sequences based on coupon conditions and unit handling.
Actual example
Starting from 50,000 won, subtract 10% first and then 5,000 won, giving a product price of 40,000 won. The reverse order gives 40,500 won. If the discount results in 40,000 won or more and free shipping applies, both have a shipping fee of 0 won. If the free shipping threshold is changed to 45,000 won, both orders incur a shipping fee.
Frequently Asked Questions
For duplicate discounts, should the discount rate be added?
No. Each fixed-rate coupon is multiplied by the product price just before applying the coupon. For example, 10% twice results in a 19% discount instead of 20%. Order differences occur based on fixed-rate coupons, maximum discount limits, and minimum purchase thresholds.
Is this similar to the actual payment in the e-commerce store?
Calculations based on directly entered assumptions. Allowed multiple use of coupons·Products excluded from application·Card discount is not automatically checked. Minimum purchase threshold is the amount of the product at the beginning or just before application·Selects rounding to the nearest whole number·Rounding·Rounding also applied. Shipping fees do not include coupons
Does it automatically find the minimum payment combination?
It compares input order and reverse order with unused coupons and does not explore all permutations and coupon combinations. Up to 5 orders can be changed directly. Free shipping means no condition, and 0 always means free shipping. The maximum discount field is unlimited, and 0 means no discount.
Calculation criteria and reference materials
The calculation formula and scope of this tool are disclosed in the above description. Examples can be checked by substituting input values into the formula or following the specified string and calendar handling rules.
Verification of calculation criteria: · Calculation·verification principles · Report errors