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Discount Calculator

Calculate sale prices, savings, and stacked discounts instantly. Free 2026 discount calculator with sales tax support and percentage breakdowns.

$150.00
$112.50
You save $37.50

How to Use the Discount Calculator

Enter the original price and discount percentage. The calculator shows the dollar amount saved and your final sale price. Add a sales tax percentage to see the total at checkout. For stacked discounts (a 20% sale plus a 10% coupon), enter the first discount, then use the resulting sale price as the new "original" for the second discount calculation.

The Math Behind Discounts

Percentages off are simple multiplication: a 25% discount means multiplying by 0.75 (1 minus 0.25). On a $200 jacket: $200 × 0.75 = $150 sale price; $200 × 0.25 = $50 saved. For 30%, multiply by 0.70; for 40%, by 0.60. The mental shortcut: take 10% (move decimal one place left), then multiply by however many "tens" you want. $200 × 30% = ($20 × 3) = $60 saved.

Stacking Discounts Without Getting Fooled

The common trap: "20% off + 15% off = 35% off!" Wrong. Discounts multiply: $100 × 0.80 × 0.85 = $68 — actually 32% off the original. The difference seems small but adds up. A 50% sale plus 20% coupon doesn't get you 70% off; it gets you 60% off. Always run the actual math through this calculator before assuming the deal is what the sign claims.

Recognizing Real Deals vs Marketing Tricks

Three classic deceptions: (1) MSRP inflation — listing a fake "regular" price to make the sale look bigger; (2) seasonal fake sales — items go on "70% off" two days after being marked up 70%; (3) anchor pricing — showing a $1,000 item next to your "$200 SALE" item to make $200 feel cheap. Browser extensions like Honey, Rakuten, and CamelCamelCamel show actual price history. If today's "sale" price is the price the item has been for 6 months, it's not really a sale.

When Discounts Are Worth It

The only good discount is one on something you would have bought anyway. Saving 50% on a $200 item you didn't need still costs you $100. The 50% sale becomes a 100% loss. Make a list of things you actually plan to buy, then watch for deals on those specific items. Black Friday, Cyber Monday, Prime Day, and end-of-season clearances are the best times for genuine markdowns on planned purchases. Use our savings goal planner to redirect the money you "save" through smart shopping into actual investments.

❓ Frequently Asked Questions

How do I calculate a discount?
Discount amount = Original Price × (Discount % ÷ 100). Sale price = Original − Discount. A $100 item at 25% off saves you $25, leaving a sale price of $75. The calculator handles this instantly along with any added sales tax.
What does '20% off' really mean for my wallet?
On a $50 item, 20% off saves $10 — you pay $40. But '20% off' marketing often follows a price hike. Always check the item's historical price using browser extensions like Honey or CamelCamelCamel before assuming the discount is real.
How do stacked discounts work?
Discounts multiply, they don't add. 20% off plus a 10% coupon is NOT 30% off. It's: $100 × 0.80 × 0.90 = $72. That's actually 28% off the original — close but not the same. Some retailers apply discounts in sequence; some take the bigger one only. Check the order of operations on the receipt.
How do I figure out what a percentage discount equals in dollars saved?
Quick mental math: 10% = move the decimal one place left ($240 → $24). 5% = half of 10%. 25% = quarter of total. 50% = half. 33% = divide by 3. Most discounts can be approximated this way without a calculator.
Does sales tax apply before or after a discount?
After. The discount comes off first, then tax is calculated on the discounted price. A $100 item with 20% off ($80) and 8% sales tax becomes $80 × 1.08 = $86.40. This works in your favor — discounts reduce your tax burden too.
What's the difference between 'percentage off' and 'percent of'?
30% OFF means you save 30% — you pay 70%. 30% OF means you pay 30% — you save 70%. The first is 'discount', the second is 'fraction'. Marketers love ambiguity; read carefully.

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