Discount Calculator
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Free Discount Calculator for Shoppers & Retailers

Discount Calculator — Find Your Final Price Instantly

Calculate the discounted price, savings, discount percentage, or original price — for a single item or a full bill. Free, accurate, and built for real pricing decisions.

100% FreeNo Login RequiredInstant ResultsSimple & Item-level ModesTax Before or After
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Enter your original price and discount to find the final price — or enter the final price and discount to find the original price.

Tax sequencing

Result summary

Enter values

Final price

—

You save —

Original price

N/A

Discount amount

N/A

Discount %

N/A

Tax amount

N/A

Tax sequencing changes the final bill. Match the rule your invoice or POS uses (tax after discount is common for GST billing).

What is a Discount Calculator and How Does It Work?

A discount calculator helps you find the price of a product or service after a discount is applied. Discounts can be flat (a fixed amount) or percentage-based, and the calculator shows both the final price and how much you're saving. It works by taking the original price and subtracting the discount — and can also work in reverse to find the original price or discount rate from a known final price.

Discount Formula

Solve forward for final price or reverse for discount rate and original price.

Final Price formula

Final Price = Original Price − (Original Price × Discount % ÷ 100)

With tax after discount: Final = (Original − Discount Amount) × (1 + Tax% ÷ 100)

Example: ₹90 at 20% off → discount ₹18 → final ₹72

How to Calculate a Discount Using This Free Calculator

1

Choose a mode

Pick Simple for a single item, or Item-level for up to 5 items in one bill.

2

Enter price and discount

Add the original price and your discount as a percentage or a flat amount — or enter a known final price to work backward.

3

Add tax if needed

Optionally enter a tax percentage and choose whether tax applies before or after the discount.

4

Read final price & savings

See your final price and total savings instantly. Adjust any field and results update live.

Simple Definitions of Discount-Related Terms

Original Price

Also called the list price, this is the price of a product or service before any discount is applied.

Final Price (Amount After Discount)

Also known as the selling price, this is the price after the discount has been deducted (and tax, if applied).

Flat Discount

A direct reduction of a specific amount, regardless of the original price (for example, ₹500 off).

Percentage Discount

A percentage-based reduction; the discount amount changes depending on the original price (for example, 20% off).

Discount Calculation Examples

10% off ₹1,000

Original

₹1,000

Discount

10%

You save

₹100

Final

₹900

Discount amount = 1,000 × 10 ÷ 100 = ₹100. Final price = 1,000 − 100 = ₹900.

20% off ₹2,500

Original

₹2,500

Discount

20%

You save

₹500

Final

₹2,000

Discount amount = 2,500 × 20 ÷ 100 = ₹500. Final price = 2,500 − 500 = ₹2,000.

30% off ₹800

Original

₹800

Discount

30%

You save

₹240

Final

₹560

Discount amount = 800 × 30 ÷ 100 = ₹240. Final price = 800 − 240 = ₹560.

Reverse: final ₹80, 20% off

Original

₹100

Discount

20%

You save

₹20

Final

₹80

Original = 80 ÷ (1 − 0.20) = 80 ÷ 0.8 = ₹100. You save ₹20.

Flat ₹500 off + 18% tax after

Original

₹5,000

Discount

₹500 flat

You save

₹500

Final

₹5,310

Base after discount = 5,000 − 500 = ₹4,500. Final with 18% tax after = 4,500 × 1.18 = ₹5,310.

What Are the Different Types of Discounts?

There are three common types of discounts businesses use. Quantity discounts reward customers for buying more units at once. Trade discounts are offered by suppliers to distributors, letting them set their own resale pricing. Promotional discounts are the most familiar to consumers — seasonal sales, coupon codes, and limited-time offers designed to drive purchases.

Quantity Discounts

A discount tied to the number of units purchased — rewarding bulk buying and larger order values.

Trade Discounts

Discounts a supplier offers to distributors or resellers so they can set their own downstream retail pricing.

Promotional Discounts

Consumer-facing offers such as seasonal sales, coupon codes, and “20% off this week” campaigns.

How to Spot a Fake Discount

A “fake discount” happens when a seller inflates the listed “original” price just to make a markdown look bigger than it really is, or when the so-called “discounted” price is actually the item’s normal market price. Before trusting a big discount percentage, check the price history of an item or compare it with similar products elsewhere — this calculator can help you verify whether the maths behind a claimed discount actually adds up.

  • Compare the “original” price with the usual market rate for the same product.
  • Enter the final price and claimed % off here to reverse-check the list price.
  • Be cautious of perpetual “sale” tags that never return to the full price.
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FAQ Guide

Frequently Asked Questions

Discount formulas, tax sequencing, item-level bills, fake discounts, and privacy.

A discount calculator computes the price after a flat or percentage discount, the amount you save, and can reverse-solve for the original price or discount rate from any two known values.
For a percentage discount: Discount Amount = Original Price × Discount% ÷ 100, then Final Price = Original Price − Discount Amount. For a flat discount, subtract the fixed amount from the original price.
Final Price = Original − (Original × Discount% ÷ 100). Discount% = ((Original − Final) ÷ Original) × 100. Original = Final ÷ (1 − Discount% ÷ 100).
Yes. It is free forever with no signup, no login, and no account required.
No. Open the page, enter your numbers, and get results instantly in your browser.
A flat discount subtracts a fixed amount (for example ₹500 off). A percentage discount reduces the price by a share of the original (for example 20% off), so the rupee savings scale with price.
Enter the final (sale) price and the discount percentage. Original Price = Final Price ÷ (1 − Discount% ÷ 100). Example: final ₹80 at 20% off → original ₹100.
Tax after discount: tax is charged on the reduced price — Final = (Original − Discount) × (1 + Tax%/100). Tax before discount: tax is applied on the original, then the discount is subtracted. Sequencing changes the final bill, so choose the rule your invoice uses.
Simple mode solves one amount at a time with reversible fields. Item-level mode lets you add up to 5 line items with their own discounts and tax, then shows bill totals for original, after discount, savings, and tax.
You can add up to 5 items. That keeps the tool focused as a quick bill calculator rather than a full invoice builder.
A fake discount is when the listed “original” price is inflated so the markdown looks larger, or when the “sale” price is really the normal market price. Use reverse calculation to check whether a claimed % off is mathematically consistent.
Yes. Enter any tax percentage (for example 5%, 12%, or 18% GST) and choose whether tax applies before or after the discount.
No. Calculations run entirely in your browser. Values are not uploaded or stored on T7 servers by default.
Yes. The calculator is fully usable on phones and tablets with the same modes and results as desktop.
Turn the numbers into a professional document with the free Invoice Generator or Quotation Generator, or refine tax with the GST Calculator and pricing with the Profit Margin Calculator.

Ready to Apply This Discount to a Real Bill?

Use our free Invoice Generator or Quotation Generator to turn this calculation into a ready-to-send document.

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