Discount & Sale Price Calculator

Savings ÷ original price × 100. With percent-off it matches your input; with amount-off it tells you the equivalent percentage.

Almost universally to the sale price (post-discount). The calculator follows that convention.

Two 10%-off discounts = 19% off (1 − 0.9 × 0.9), not 20%. Apply one discount, then enter the result as the new 'original' and apply the second.

It is half price pre-tax. But anchoring to the original price, even a 50% discount can still feel expensive if the original was inflated for 'MSRP' purposes.

For a percentage discount, no — multiplication commutes, so 20% off then 10% tax and 10% tax then 20% off both land on 88.00 from a price of 100. For a fixed amount it matters: a coupon of 20 applied before 10% tax gives 88.00, applied after gives 90.00. The gap is the tax on the coupon itself, 20 × 10% = 2. This calculator takes the discount first, which is what most jurisdictions require, but check your receipt if a fixed-amount coupon looks 'too small'.

The saving is capped at the original price, so the sale price bottoms out at zero rather than going negative — a 50 coupon on a 30 item shows 30 saved, not 50, which is how almost every till behaves. Tax is then charged on zero, so the total is zero. If your retailer actually pays out the excess as store credit, that part is outside what this models; enter the two transactions separately.