What is a discount calculator?
A discount calculator turns an original price and a markdown (percent or dollars) into the sale price, savings amount, or the discount rate when you know both prices. Retail, wholesale, and freelance quotes all use the same core relationships—only the labels change. Chain this page with the percentage calculator when you need intermediate ratios, and with the sales tax calculator once you know whether tax applies before or after coupons.
How to use this discount calculator
- Enter the list or MSRP value before coupons—that is your baseline “100%.”
- Provide either the discount percent or the dollars off; the tool fills in the complementary value.
- Compare sale price to your budget threshold and round only when presenting to customers, not while comparing SKUs.
Reference: essential formulas
Sale price equals list price minus savings, and savings can be expressed as a fraction of list.
| Solve for | Formula |
|---|---|
| Sale price | List × (1 − discount/100) |
| Discount % from prices | (List − Sale) ÷ List × 100 |
| Original from sale | Sale ÷ (1 − discount/100) |
Worked example
List $249, coupon 35% off — what do you pay? Savings = 249 × 0.35 = 87.15 → sale ≈ $161.85 before tax. If tax is assessed on the discounted subtotal, multiply that—not the list—by your jurisdiction rate.
Sequential (“stacked”) discounts
Applying 20% then 10% is not the same as a single 30% off—you multiply remaining factors, you do not add percents.
| Scenario | Math | Takeaway |
|---|---|---|
| $100 list | −20% → $80 | −10% on $80 → $72 (28% total off list) |
| Same as single discount | — | Would need ~28% off in one step—not 30% |
Markdown tips and best practices
Always know whether “50% off second item” applies to the cheaper line or the tagged SKU—policies differ by retailer.
B2B quotes often show discounts in cascade (list → channel discount → volume rebate); mirror that order on invoices so audits reconcile.
When comparing membership “percent back” programs, convert to effective dollars saved on your actual annual spend—not headline percents.
Short answers to common discount questions → Frequently Asked Questions.