Need recurring invoices & client management? Need more than a free tool? Try Billora — Invoicing Software for Small Businesses Calculate sale prices , discount amounts, and savings instantly. Supports stacked discounts, reverse calculations, and sales tax — with a full step-by-step breakdown . Calculate Your Discount Enter values to see instant results Your Savings Breakdown Enter your price and discount to see exactly how much you'll save. Price Breakdown Step-by-Step Solution Common Discount Examples Quick reference for the most popular discount calculations — click any card to auto-fill the calculator. Why Use Our Discount Calculator? More than a simple percent-off tool — four modes, instant results, and a full savings breakdown every time. Instant Results Get accurate discount calculations in real-time. Final price, savings amount, and percentage — all shown the moment you click Calculate . Stacked Discounts Handle complex scenarios with two successive discounts . See the true combined saving — not just a simple sum of percentages. Reverse Calculation Know the sale price but not the original? Find the original price or the exact discount percentage from any two known values. Price Comparison Compare two stores side by side — enter different prices and discounts to instantly see which deal saves more . Sales Tax Support Optionally add a sales tax rate to get the true total after both discount and tax — no surprises at checkout. Mobile Friendly Calculate discounts on-the-go while shopping in stores or online. No app, no sign-up — works in any browser. How to Use the Discount Calculator Four simple steps — enter a price, set a discount, and get a full savings breakdown instantly. Select Standard , Multiple , Reverse , or Compare depending on your calculation need. Enter Original Price Type the original price of the item. Use the quick-preset buttons or drag the slider to set the discount percentage. Click Calculate Press Calculate for instant results. Optionally enable Sales Tax to include tax in the final total. Read Your Savings The result panel shows final price , amount saved , savings percentage, and a full step-by-step solution. Pro Tip: Use the Compare mode when shopping across two stores — enter each store's price and discount to instantly see which deal saves you more money. How to Calculate Discounts — Formulas & Examples A discount calculator helps shoppers, retailers, and students quickly find sale prices, savings amounts, and original prices. Whether you're comparing deals, calculating stacked promotions, or working out a reverse discount, the formulas below explain exactly how each calculation works. Standard Discount Formula The core formula to find the sale price: Sale Price = Original Price × (1 − Discount% ÷ 100) $80 item at 25% off → $80 × 0.75 = $60 Savings = Original − Sale Price → $80 − $60 = $20 Savings % = (Savings ÷ Original) × 100 → 25% Stacked / Multiple Discounts When two discounts apply in sequence, each one reduces the already-discounted price — they do not simply add up: $100 at 20% off → $80, then 10% off → $80 × 0.90 = $72 Combined saving = $28 = 28% , not 30% Formula: Final = Original × (1 − D1÷100) × (1 − D2÷100) Reverse Discount Formulas Two common reverse problems solved: Find original price: Original = Sale Price ÷ (1 − Discount% ÷ 100) . Paid $60 after 25% off → $60 ÷ 0.75 = $80 Find discount %: Discount% = ((Original − Sale) ÷ Original) × 100 . $80 → $60 → ((80−60)÷80)×100 = 25% Discount with Sales Tax Tax is applied after the discount in most jurisdictions: Total = Sale Price × (1 + Tax% ÷ 100) Pro Tips for Discount Calculations Two 50% discounts ≠ 100% off. Stacked discounts compound — 50% then 50% leaves you paying 25% of the original price. Use the Reverse mode when a price tag shows only the sale price — enter the sale price and the discount % to recover the original retail price.

Compare mode is ideal for Black Friday shopping — enter two stores' prices and discounts to find the better deal in one click. Tax timing matters: in most US states, sales tax applies to the discounted price, not the original — always calculate discount first, then tax. Frequently Asked Questions Common questions about discount calculations, sale prices, and savings. Still stuck? Contact us . How do I calculate a discount price? Formula: Sale Price = Original × (1 − Discount% ÷ 100) Example: $80 at 25% off → $80 × 0.75 = $60 Savings = $80 − $60 = $20 How do I find the original price before a discount? Formula: Original = Sale Price ÷ (1 − Discount% ÷ 100) Example: paid $60 after 25% off → $60 ÷ 0.75 = $80 Use the Reverse mode tab to do this automatically How do stacked or multiple discounts work? $100 at 20% off = $80, then 10% off = $80 × 0.90 = $72 Combined saving = $28 = 28% , not 30% Use the Multiple mode tab for automatic stacked calculation How do I calculate the discount percentage from two prices? Formula: Discount% = ((Original − Sale) ÷ Original) × 100 Example: $80 original, $60 sale → ((80−60)÷80)×100 = 25% Use the Reverse → Find Discount % panel for instant results Is sales tax applied before or after the discount? Formula: Total = Sale Price × (1 + Tax% ÷ 100) Example: $80 at 25% off = $60, then 8% tax → $60 × 1.08 = $64.80 Enable Include Sales Tax in Standard mode to add tax automatically What is the difference between discount and markdown? Discount — a temporary reduction offered to buyers (e.g. sale, coupon, promo code) Markdown — a permanent reduction in the listed retail price (e.g. clearance, end-of-season repricing) The calculation formula is identical for both — this calculator handles either scenario How do I calculate 20% off a price quickly? $150 at 20% off → $150 × 0.80 = $120 Mental math shortcut: $150 ÷ 5 = $30 saved → $120 Use the 20% preset button in Standard mode for instant results Can I use this discount calculator on my phone? Works on desktop, tablet, and mobile browsers No app download or account sign-up required 100% free with no ads blocking your results Tested on Chrome, Firefox, Safari, and Edge Have a question not answered here? Start Saving Smarter Today Calculate sale prices, compare store deals, and uncover hidden savings in seconds — completely free , no sign-up required. Related Calculators More free tools to help with everyday math and financial calculations. Percentage Calculator Calculate X% of Y, percentage change, and reverse percentages. Percentage Calculator Calculate X% of Y, percentage change, and reverse percentages. Fraction Calculator Add, subtract, multiply, and divide fractions with step-by-step solutions. Fraction Calculator Add, subtract, multiply, and divide fractions with step-by-step solutions. Loan EMI & Mortgage Calculate monthly payments, total interest, and full amortization schedule. Loan EMI & Mortgage Calculate monthly payments, total interest, and full amortization schedule. Compound Interest Calculate investment growth with compound interest over any time period. Compound Interest Calculate investment growth with compound interest over any time period. This tool will be released soon. Stay tuned!