Discount Calculator
Final price after one, two or three successive discounts.
Final price
$80.00
You save
$20.00
Total discount (%)
20%
How it works
This calculator solves an everyday problem: you see a 20% off sale, plus a 10% coupon, and you want to know the actual final price. The answer is not 30% — successive discounts don't add up directly. Here you can apply up to three chained discounts and see the final price, total savings, and effective discount percentage.
Formula:
Final Price = Price × (1 − d₁) × (1 − d₂) × (1 − d₃) Savings = Price − Final Price Total Discount (%) = Savings / Price × 100
Why don't discounts add up? Because each discount applies to the already-reduced price. A $100 item with 20% + 10% stacked becomes: $100 × 0.80 = $80, then $80 × 0.90 = $72. The effective discount is 28%, not 30%. The bigger the individual discounts, the wider the gap between advertised and real.
Use this tool to verify Black Friday and Cyber Monday promotions, compare stackable coupons, calculate volume-based progressive discounts, and identify when "sale on sale" is actually worth it. E-commerce stores commonly advertise "up to 70% off" using artificial successive discounts — knowing how to calculate protects your wallet.
Practical examples
$100 with 20% off
Final price $80.00 · You save $20.00 · Total discount 20%
$200 with 30% + 10% stacked
Final price $126.00 · You save $74.00 · Total discount 37%
$500 with 50% + 20% + 10% (Black Friday)
Final price $180.00 · You save $320.00 · Total discount 64%
$1,000 with 25% + 15% (subscription + coupon)
Final price $637.50 · You save $362.50 · Total discount 36.25%
Frequently asked questions
Does 20% + 10% equal a 30% discount?
No. Successive discounts always yield a total below the sum. 20% + 10% = 28% effective. The gap comes from applying the second discount to the already-reduced amount.
What if the store adds the discounts together first?
Then the effective discount is just the sum. But beware: most stores apply discounts sequentially by default. Always confirm before buying.
Can I use this for compound depreciation?
Yes. The formula is mathematically equivalent to compound devaluation. Useful for calculating accumulated depreciation or value loss across multiple periods.
Does the order of discounts matter?
For pure successive discounts, no — (1−0.2)×(1−0.1) = (1−0.1)×(1−0.2). Order only matters if there's rounding at each step or fixed-amount discounts mixed in.
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⚠️ Disclaimer
This calculator is for educational and informational purposes only. Results are estimates based on public formulas and may contain inaccuracies or be outdated. We are not accountants, lawyers, doctors, or financial advisors — for any important decision (tax filings, contracts, diagnoses, financial planning), always consult a qualified professional. calculadora.work assumes no liability for decisions made based on the content of this site.