Run a Sale Without Killing Your Profits
Enter the original price and discount to see the final price, how much your customer saves, and what the discount really costs you.
📥 Enter Your Numbers
$
The regular price before any discount.
How much % off you are offering.
Tax is calculated on the discounted price.
🔒 Privacy-first: all calculations happen in your browser. Nothing is uploaded or stored.
🏷️ Your Sale Numbers
—
FINAL PRICE (AFTER DISCOUNT + TAX)
Customer Saves—
Effective Discount—
Sales Lift Needed to Break Even—
Discounts: Powerful but Dangerous
A discount must grow volume enough to protect total profit.
⚠️
The Volume Trap
A 25% discount needs ~33% more sales to earn the same profit. Deep discounts can hurt more than they help.
💡
The Anchor Effect
Showing the original price next to the sale price makes the deal feel bigger and lifts conversions.
🎯
Smart Alternatives
Free shipping, bundles or small gifts often cost less than a percentage discount while feeling more valuable.
Frequently Asked Questions
Quick answers for busy business owners.
How do I calculate a discount?
Sale price = original × (1 − discount%). Then add tax on the discounted amount. This calculator does it all instantly.
What is a good discount percentage?
10–20% is typical retail. Above 30% customers start questioning quality, and your margins suffer badly.
How much more do I need to sell after a discount?
Rule of thumb: required increase ≈ discount ÷ (1 − discount). 25% off → sell 33% more to break even.
Is this calculator really free?
Completely free, forever, no signup. All calculations run in your browser.