Finance

Discount & Sale Calculator

Calculate the price after a discount, or work backwards from a sale price to find the original — with support for stacked discounts (sale + coupon), the real effective discount rate, and an optional VAT toggle.

What do you have?

Original price (before discount)

Sale price (as currently shown)

Discount type

Discount value

Extra stacked discount (additional coupon, optional) A percentage applied on top of the first discount (e.g. a 20% sale + an extra 10% coupon at checkout).

VAT (Value Added Tax)

Enter your details and press "Calculate" to see your result here.

About this calculator

What the result means

A simple discount is easy: discounted price = original price × (1 − discount rate). But the most common mistake is stacked discounts — seeing '20% off + an extra 10%' does not mean 30% off in total, because the second discount applies to the price after the first, not the original price. Example: a 200 SAR item at 20% off becomes 160 SAR, then an extra 10% off the 160 (not the 200) becomes 144 SAR — an effective discount of 28%, not 30%. This calculator always computes the true effective rate.

Recommendation

When comparing different offers, always compare the actual final price (after all discounts and VAT if applicable), not the sum of the advertised percentages — a store advertising '40% off' might actually be cheaper or pricier than one advertising '25% + 20%', depending on how it's applied. Also confirm whether the displayed price includes VAT before comparing prices across different stores.

Frequently asked questions

Is a 20% discount plus an extra 10% the same as 30% off?

No. The second discount applies to the price after the first, so the result is always less than the sum of the two rates. For example: 200 SAR with 20% then 10% off = 144 SAR (28% effective), while a straight 30% off gives 140 SAR. The difference is small but real — and it grows as the stacked percentages get larger.

Does the price shown in-store include VAT or not?

In Saudi Arabia, prices displayed to the end consumer (in stores and online) are usually required by regulation to already include VAT (15%). If unsure, ask the seller or check the receipt — use the 'price already includes VAT' option in the calculator in that case.

How do I find the original price from a listed sale price?

Use the 'I know the sale price' mode above, and enter the displayed price and the stated discount rate (plus any extra discount, if applicable) — the calculator works the original price out algebraically.

Can I calculate more than two stacked discounts?

This version supports two discounts (the main one + one extra), which covers the most common case (a sale + a coupon). For three or more successive discounts, you can feed this calculator's result back in as the 'original price' for a second pass to add a third discount.

Sources

Zakat, Tax and Customs Authority (ZATCA) — 15% VAT rate