Black Friday falls on 27 November 2026. Big percentages are designed to make you buy fast, so check the numbers first. The discount calculator works out the real price and saving in seconds.
1. Stacked discounts do not add up
“30% off, plus an extra 20% off at checkout” sounds like 50%. It is not: a $200 item becomes $140 after 30%, then $112 after another 20%. That is a 44% discount, not 50%.
2. Check the “was” price
A “was $150, now $99” label suggests 34% off. If the item normally sold for $119, the real saving is $20, or about 17%. Look at the price history or other shops before trusting the crossed-out price.
3. Add tax and delivery
In the US, sales tax is added at checkout, and delivery fees can wipe out a small discount. Enter the tax rate in the calculator to see the price you will actually pay.
4. Compare the price per unit
Multi-buys and bigger packs are not always cheaper. Divide the price by the quantity to compare fairly.
Frequently asked questions
How do I calculate the percentage I saved?
Saving ÷ original price × 100. Paying $112 for a $200 item saves $88, which is 44%. See how to calculate percentage change.
Is buy now, pay later a good deal on Black Friday?
Only if you repay on time with no fees. Late fees or interest can cost more than the discount saved. Set a limit first with the budget calculator.
Related: Discount calculator · VAT calculator