Percent Off Calculator
Quickly calculate sale prices and savings from percentage discounts with optional tax considerations.
How Percent Off Calculator Works
This calculator helps you figure out exactly how much you'll pay after a discount and how much you'll save. It handles the tricky math when taxes are involved, which can be confusing since some stores include tax in their prices while others add it afterward.
The calculator works with two tax scenarios: tax-inclusive pricing (where tax is already built into the original price) and tax-exclusive pricing (where tax gets added to the final discounted price). This distinction matters because it affects your final savings.
You'll get two key results: the total discount amount you're saving and the final price you'll actually pay. The calculator automatically handles the complex formulas behind percentage discounts, so you don't have to do the math yourself.
Percent Off Calculator Formula Breakdown
Formula
For tax-inclusive pricing: Discount = Original price × (Discount percentage ÷ 100)
For tax-exclusive pricing: Discount = (Original price + tax amount) × (Discount percentage ÷ 100)
Final price = Original price - Discount (for tax-inclusive) or (Original price + tax) - Discount (for tax-exclusive)Variables Explained
- Original PriceThe starting price of the item before any discounts are applied. This should be the price you see on the price tag or product listing, typically found on store shelves, websites, or receipts.
- Percentage DiscountThe discount rate being offered, expressed as a percentage (like 20% off or 50% off). You'll usually find this information in store advertisements, promotional emails, or sale signs.
- Tax Included in PriceWhether the original price already includes sales tax or if tax will be added separately at checkout. This varies by store and location - some European retailers include tax in displayed prices while most US retailers add tax at the register.
- Tax RateThe sales tax percentage charged in your area, typically ranging from 0% to 10% depending on your state and local tax rates. You can find your local tax rate on government websites or by checking recent receipts from purchases.
Example Calculation
Given:
- Original Price: $100.00
- Percentage Discount: 10%
- Tax Included in Price: Yes
- Tax Rate: 10%
Calculation:
Since tax is included in the original price:
Discount amount: $100.00 × (10 ÷ 100) = $10.00
Final price: $100.00 - $10.00 = $90.00Result:
Final price: $90.00, Total discount: $10.00Explanation
This example shows a $100 item with tax already included in the price, getting a 10% discount. You save $10 and pay $90 total - no additional tax calculations needed since tax was already part of the original price.
Tips for Using Percent Off Calculator
- 💡Check whether the displayed price includes tax or if tax will be added at checkout - this significantly affects your final savings calculation.
- 💡For online shopping, many retailers show tax-exclusive prices but will add tax during checkout, so use the tax-exclusive option to get accurate totals.
- 💡When comparing deals across different stores, make sure you're calculating the final after-tax price to see which offer actually saves you more money.
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Eugen
Creator of Creative Widgets“After 10+ years in digital marketing, I’ve built calculators that drove thousands of new leads for clients. I realized one thing: calculators convert. They're killer for CRO and great for SEO. That's why I built Creative Widgets—an easy, no-code calculator builder. ”
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