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Estimating Retail Markdowns and Savings
Evaluate discount options during sales. This tool computes the final price after applying single or stacked discounts (such as an extra 10% off an already discounted item).
Formula for Stacked Discounts
Stacked discounts are calculated sequentially, not additively. An item with 20% off plus an extra 10% off does not equal 30% off. It equals 28% off: Price × 0.80 × 0.90 = Price × 0.72.
Frequently Asked Questions
What is tax inclusion on discounts?
In most regions, sales tax is calculated on the post-discount price, reducing the overall tax paid.
