Is buy-one-get-one-free the same as 50% off?

Only if you buy exactly 2 items. BOGO means every second item is free, so buying 2 saves 50%, but buying 3 saves only 33% (pay for 2, get 1 free). The more items you buy, the closer the effective discount approaches 50% but never reaches it for odd quantities.

When is tax applied on discounted items?

Sales tax is calculated on the final discounted price, not the original price. If an $80 item is 25% off ($60 final price) and tax is 8%, you pay $60 + $4.80 = $64.80. The discount reduces your tax bill too.

How do I compare deals from different stores?

Use the Compare Deals tab. Enter each store's price and discount, and the calculator shows the final price for each deal side by side. It automatically highlights the best deal (lowest final price).

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Discount Calculator

Calculate the final price after percentage, fixed, or BOGO discounts. Stack multiple discounts, add sales tax, and compare deals across stores.

Last updated: March 31, 2026

Discount Type

Original Price

Discount

Quantity (optional)

Second Discount (optional)

Tax Rate (optional)

How to Use This Calculator

Choose your discount type: percentage, fixed amount, or buy-X-get-Y.
Enter the original price and discount details.
Optionally add a second discount, quantity, or tax rate.
Use the Compare Deals tab to compare prices across multiple stores.

The Formula

Percent: Final = Price × (1 - Discount/100). Fixed: Final = Price - Amount. Double: Final = Price × (1 - D1/100) × (1 - D2/100). BOGO: Paid Items = Total - Free Items; Final = Paid × Price.

Frequently Asked Questions

Stacked (double) discounts are applied sequentially, not added together. A 20% off coupon plus a 10% off sale means: first 20% off the original price, then 10% off the reduced price. So 20% + 10% off $100 = $72, not $70.