Calculate the final price and amount saved from any percentage off, with optional sales tax.
Direct answers for the most-searched percent-off queries:
Final price (before tax) for a $100 item at the most-searched discount rates. Click “Use this” on any row to pre-fill the calculator below.
| Discount | Original price | You save | Final price | Apply |
|---|---|---|---|---|
| 10% off | $100.00 | $10.00 | $90.00 | Use this → |
| 15% off | $100.00 | $15.00 | $85.00 | Use this → |
| 20% off | $100.00 | $20.00 | $80.00 | Use this → |
| 25% off | $100.00 | $25.00 | $75.00 | Use this → |
| 30% off | $100.00 | $30.00 | $70.00 | Use this → |
| 50% off | $100.00 | $50.00 | $50.00 | Use this → |
For stacked discounts (e.g. 30% + extra 20%), the second discount applies to the already-slated price — not the original. Calculator above supports this.
Cross-checked against authoritative formulas (IRS, NIST, ACSM) and updated for 2025/2026 tax years and rates.
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.
Concrete worked math for the discounts shoppers actually see — BOGO, Black Friday, clearance, and stacked coupons. Starting from a $80 item unless noted.
| Scenario | Effective discount | You save | Final price | Quick formula |
|---|---|---|---|---|
| Buy One Get One 50% Off (BOGO 50%) | 25% | $20 (2 items @ $80 each) | $120 total ($60 + $20) | $80 + $80 × 0.5 |
| Buy One Get One Free (BOGO free) | 50% | $80 | $80 total (2 items for the price of 1) | $80 + $0 |
| Black Friday "40% off original $150" | 40% | $60 | $90 | $150 × 0.6 |
| Clearance 70% off (then 10% coupon) | 73% | $58.40 | $21.60 | $80 × 0.3 × 0.9 |
| Stacked: 30% off + extra 20% coupon | 44% | $35.20 | $44.80 | $80 × 0.7 × 0.8 |
| Add 15% tip on already-discounted bill | — (tip, not discount) | — | $92 (e.g. 20% off $80 + 15% tip = $64 + $9.60) | $80 × 0.8 × 1.15 |
| Employee discount 30% on already-sale item | 51% | $40.80 | $39.20 | $80 × 0.7 × 0.7 |
Stacked discounts multiply, they don’t add. Two 20% coupons do not equal 40% off — they equal 36% off (0.8 × 0.8 = 0.64). BOGO "50% off" is a 25% effective discount on two items, not 50%.
Discount is applied first, then sales tax is calculated on the reduced price (the same way every U.S. retailer does it). Below: a $80 item with a 25% off coupon ($60 sale price), then state sales tax.
| State | State sales tax | Tax on $60 sale price | Final total |
|---|---|---|---|
| California | 7.25%–10.75% (local add-ons) | $4.35–$6.45 | $64.35–$66.45 |
| New York | 4% state + 0%–4.875% local | $2.40–$5.33 | $62.40–$65.33 |
| Texas | 6.25% state + up to 2% local | $3.75–$4.95 | $63.75–$64.95 |
| Florida | 6% state + up to 2% local | $3.60–$4.80 | $63.60–$64.80 |
| Illinois | 6.25% state + up to 4.75% local (max 11%) | $3.75–$6.60 | $63.75–$66.60 |
| Pennsylvania | 6% state + up to 2% local (max 8%) | $3.60–$4.80 | $63.60–$64.80 |
| Washington | 6.5% state + up to 4.1% local (max 10.6%) | $3.90–$6.36 | $63.90–$66.36 |
| Massachusetts | 6.25% state + up to 0.75% local | $3.75–$4.20 | $63.75–$64.20 |
| Colorado | 2.9% state + up to 8.3% local (max 11.2%) | $1.74–$6.72 | $61.74–$66.72 |
| No state sales tax (AK, DE, MT, NH, OR) | 0% | $0 | $60.00 |
Tax rates are 2026 estimates from state Departments of Revenue. Some cities (e.g. Seattle, Chicago, NYC) add their own local tax on top. Clothing, groceries, and prescription drugs are tax-exempt in many states — check your state’s rules before checkout.
FAQ
Everything you need to know about this calculator. Can't find what you're looking for? Email our team.
A percent off calculator is a free tool that finds the sale price after a percentage discount, and shows the dollar amount saved. Our percent off calculator also adds sales tax to the discounted price for the final total. The percent off calculator handles stacked discounts (e.g. 20% off + extra 10% off) and shows the effective discount.
How it works
Our percent off calculator lets you find the sale price and amount saved from any percentage discount, with optional sales tax.
Type the original price of the item. The percent off calculator accepts any amount - dollars, euros, or other currencies. The original price is what you would pay without the discount.
Type the discount as a percentage (e.g. 20 for 20% off). Optionally enter the sales tax rate and toggle stacked discount mode for multiple sequential discounts. The percent off calculator handles all common scenarios.
The result shows the discount amount, sale price, sales tax, and final total. The percent off calculator also shows the effective total discount when stacked discounts are used. The share button creates a link with your inputs pre-filled.
Sponsored
Percentage off calculations are among the most commonly needed math in everyday life, especially during sales and shopping. The formula is straightforward: Discount Amount = Original Price × (Discount Percentage ÷ 100). The sale price is then: Sale Price = Original Price - Discount Amount.
Example: A $80 item at 25% off has a discount of $80 × 0.25 = $20. The sale price is $80 - $20 = $60. With 8% sales tax, the final price is $60 × 1.08 = $64.80.
Stacking discounts: Some stores offer "extra 20% off sale items." These are typically applied sequentially, not added together. A $100 item marked 30% off is $70. An additional 20% off reduces it to $70 × 0.80 = $56 — not $100 × 0.50 = $50. Sequential discounts always result in a higher final price than adding the percentages.
Quick mental shortcuts: For 10% off, move the decimal one place left ($45 → $4.50 discount). For 20%, double the 10% amount. For 25%, divide by 4. For 50%, divide by 2. For 15%, calculate 10% and add half of that.
Type the pre-discount price. This is the regular price or the price before any sale is applied.
Type the percentage off, like 20% off or 30% off. The calculator handles any value from 1% to 99%.
Get the final price after the discount is applied, the dollar amount saved, and the equivalent fixed amount off for easy comparison.
For related calculations, try our discount calculator.