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Discount Calculator

Calculate sequential percentage discounts, savings and final price, with optional tax on a purchase amount.

A price estimate only. Actual checkout rules, coupon eligibility and tax treatment may differ.

Up to two decimal places; no commas.

First discount amount₹200.00
Price after first discount₹800.00
Additional discount amount₹80.00
Price after all discounts₹720.00
Tax on discounted price₹0.00
Final price₹720.00
Total savings before tax₹280.00

Calculation explanation

D₁ = original × d₁/100; D₂ = (original − D₁) × d₂/100; final = original − D₁ − D₂ + tax

Discounts apply sequentially. Each discount and the tax are rounded half-up to two decimals before the next step. Tax applies after both discounts. Total savings excludes tax; blank optional percentages mean zero.

How to use Discount Calculator

Check a stacked promotion before comparing checkout prices. A second discount applies to the already reduced price, while optional tax is calculated after both reductions. Savings are shown separately from tax.

  1. Enter the original price and first discount percentage.
  2. Optionally add a second discount and tax rate. The second discount applies to the already reduced price.
  3. Compare savings before tax with the final price, which includes any entered tax.

Formulas and assumptions

  • First discount = original × first rate / 100.
  • Additional discount = (original − first discount) × additional rate / 100.
  • Final price = price after both discounts + tax on that price. Savings before tax = original − price after both discounts.
  • Each discount and the tax round half-up to cents before the next operation.
  • Blank optional percentages are zero. Shipping, fixed coupons and tax exemptions are not modeled.

Practical examples

Two successive promotions

Input
1,000 with 20% then 10% off
Result
Price after all discounts: ₹720.00; Total savings before tax: ₹280.00

The second discount is 80, so the combined saving is 28%, not 30%.

Tax after discounts

Input
1,000 with 20% then 10% off and 18% tax
Result
Tax on discounted price: ₹129.60; Final price: ₹849.60

Tax is calculated on 720, after both reductions.

A single sale price

Input
80 with 25% off and no further discount or tax
Result
Final price: ₹60.00; Total savings before tax: ₹20.00

One quarter of the original price is saved.

Frequently asked questions

How do double or stacked percentage discounts work?

Successive discounts (such as 20% off plus an additional 10% off) apply sequentially rather than additively. The second discount is calculated on the already reduced intermediate price, not the original sticker price. A 20% + 10% sequential discount yields an effective total discount of 28%, not 30%.

Is sales tax calculated before or after the discount is applied?

In standard retail transactions, sales tax or VAT is calculated on the net discounted checkout price you actually pay, rather than on the original manufacturer's suggested retail price (MSRP).

Can I calculate fixed currency discount vouchers with this tool?

This calculator is designed for percentage-based promotional discounts. To evaluate a fixed coupon, subtract the voucher value directly from your purchase price, or divide the coupon value by the original price and multiply by 100 to find its percentage equivalent.

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