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Discount Calculator

Percent off with stacked discounts and sales tax, plus a reverse mode that recovers the original price — 100% in your browser.

2 MODESPercent + fixedStacked discountsTax on topSavings shown

La calculatricePage 1

Mode

Original Price

Discount %

Additional Discount % (stacked, optional)

Sales Tax % (optional)

$67.49final price · you save $22.50 (25.0% off)

Your inputs

Original Price:$89.99Discount:25%

Final priceStarting from $89.99, the 25% discount removes $22.50. Sales tax is added last, on the discounted amount — you save $22.50 in total (25.0% effective off).

How the discount is calculated

Final = Price × (1 − D₁%) × (1 − D₂%) × (1 + Tax%)

Amount saved = Original − discounted subtotal · Stacked discounts are applied one after another, not added together

Original price$89.99

Discount (25%)− $22.50

Subtotal after discounts$67.49

Final price$67.49

Total savings$22.50

Worked example

A $89.99 item at 25% off with an extra 10% coupon and 8% sales tax.

After 25% off:$67.49
After extra 10% off:$60.74
Plus 8% tax (final):$65.60

💡 Stacked discounts are not additive

A “25% + 10% off” deal gives 32.5% total off (0.75 × 0.90 = 0.675), not 35%. Retailers apply coupons sequentially to the already-discounted price, which is exactly what the % Off mode above does.

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Data Source & Legal Disclaimer

Effective: 2026-01-01Last updated: 8 months agoUpdate: Annual

Sources: FTC — Consumer pricing & discount practices

Most stores apply stacked discounts sequentially (the second percentage applies to the already-reduced price), which this calculator follows. Always confirm how your retailer applies coupons and taxes.

See all data sources & update policy →

Discount Calculator

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