Discount Calculator

Quickly calculate the final price after discounts and taxes, and see how much you save.

Select Currency

Calculate Sale Price

Original Price (₹)

Discount (%)

Sales Tax / GST (%)

Final Price

₹0.00

You Save: ₹0.00

Find Original Price

Sale Price (₹)

Discount (%)

Original Price Was

₹0.00

The Ultimate Guide to Using a Discount Calculator

Everyone loves a good sale, but calculating the final price after a discount—and especially after sales tax—can sometimes be tricky. A discount calculator is a shopper's best friend, taking the guesswork out of sales and helping you stick to your budget. This guide will not only show you how to use our powerful sale price calculator but also explain the simple math behind it, so you can be a smarter shopper.

How to Use Our Discount Calculator

Our tool features two main calculators and a currency selector to cover all your needs.

1. Select Your Currency

Before you begin, use the dropdown menu at the top to select your currency, such as Indian Rupee (₹) or US Dollar ($). All calculations will use the selected currency symbol.

2. Calculate Sale Price

This is the primary tool for figuring out what you'll actually pay for an item on sale.

Enter Original Price: Type the item's original price (before the discount) into the first box.
Enter Discount Percentage: Input the percentage off (e.g., for 25% off, just enter `25`).
Enter Sales Tax / GST (Optional): If you want the most accurate final cost, enter your local sales tax or GST percentage. The calculator will apply this tax *after* the discount has been calculated, which is the correct method.
View Your Results Instantly: The calculator will immediately show you the **Final Price** you'll pay and, just as importantly, the total amount that **You Save**.

3. Find Original Price

Ever see a sale price and wonder what the item cost before the discount? This reverse calculator is for you.

Enter Sale Price: Input the price you paid or see on the tag.
Enter Discount Percentage: Input the percentage that was taken off.
View the Original Price: The tool will instantly calculate and show you the item's original, pre-discount price.

The Math Behind the Savings: How to Calculate Discounts

Understanding the formulas our percent off calculator uses can empower you to do quick mental estimates while shopping.

Formula 1: Calculating the Final Price

There are two simple steps to finding the final price.

Calculate the Savings: Convert the discount percentage to a decimal and multiply it by the original price.
Savings = Original Price × (Discount % / 100)
For a ₹1500 item with a 25% discount: `1500 × (25 / 100) = 1500 × 0.25 = ₹375` in savings.
Calculate the Sale Price: Subtract the savings from the original price.
Sale Price = Original Price - Savings
Continuing the example: `1500 - 375 = ₹1125`.

Formula 2: Adding Sales Tax Correctly

A crucial step that many forget is sales tax. **Tax is always calculated on the discounted price, not the original price.**

Calculate the Tax Amount: Convert the tax percentage to a decimal and multiply it by the sale price.
Tax Amount = Sale Price × (Tax % / 100)
If the sale price is ₹1125 and tax is 18%: `1125 × 0.18 = ₹202.50`.
Calculate the Final Price: Add the tax amount to the sale price.
Final Price = Sale Price + Tax Amount
Final cost: `1125 + 202.50 = ₹1327.50`.

Formula 3: Calculating the Original Price (Reverse Calculation)

To find the original price from a sale price, you need to determine what percentage of the original price you actually paid.

Original Price = Sale Price / (1 - (Discount % / 100))

If you paid ₹750 for an item that was 25% off: `750 / (1 - (25 / 100)) = 750 / 0.75 = ₹1000`.

Advanced Shopping Scenarios

Sometimes deals are more complicated. Here's how to tackle them:

Double Discounts (e.g., "40% off + an extra 20% off")

A common mistake is to simply add the percentages together (40% + 20% = 60%). This is incorrect. The second discount is applied to the *already discounted price*.

Step 1: Apply the first discount. For a ₹1000 item at 40% off: `₹1000 - ₹400 = ₹600`.
Step 2: Apply the second discount to the new price. 20% of ₹600 is ₹120. So, `₹600 - ₹120 = ₹480`.
Result: The final price is ₹480, which is a 52% total discount, not 60%.

Why a Discount Calculator is an Essential Tool

Budgeting with Confidence: Know the exact final cost before you get to the checkout, helping you stay within your budget.
Saves Time and Effort: Instantly get accurate results without doing complex math in your head or on a phone's basic calculator.
Compare Deals Effectively: Quickly compare different offers (e.g., 25% off at one store vs. ₹200 off at another) to find the true best deal.
Avoid Checkout Surprises: By including sales tax, our calculator ensures there are no unexpected costs when it's time to pay.

Frequently Asked Questions (FAQ)

How do you calculate 20 percent off?

To calculate 20% off a price, you can multiply the price by 0.20 to find the discount amount, then subtract that from the original price. An even faster way is to multiply the price by `(1 - 0.20)`, which is 0.80. So, for a ₹500 item, `₹500 * 0.80 = ₹400`.

Is sales tax calculated before or after a discount?

In virtually all retail situations, the discount is applied first, and then sales tax is calculated on the lower, discounted price. This is beneficial for the consumer. Our calculator follows this correct order of operations.

Is this online sale calculator free?

Yes, this tool is 100% free to use, with no limits on the number of calculations you can perform.

Conclusion

Being a savvy shopper means being an informed shopper. A discount calculator is a simple yet powerful tool that provides the clarity needed to make smart financial decisions. It demystifies sales, accounts for taxes, and ultimately helps you keep more money in your pocket. Bookmark this percent off calculator and make it your go-to companion for every shopping trip.