Saudi VAT Calculator 2026: Add or Extract 15% VAT

The easiest mistake when extracting VAT from a VAT-inclusive price is to multiply by 15%. Try it on SAR 1,150: you get 172.50, but the actual VAT is 150. That is SAR 22.50 wrong on one invoice, and it compounds line by line. The reason is that ZATCA charges the 15% on the price before VAT, so the inclusive amount equals 115% of that price, not 100%.

The calculator below works both ways and shows the formula it used under the result.

The two official formulas

ZATCA's guideline states that the 15% basic rate applies to supplies made from 1 July 2020, and it writes down two ways to calculate the tax:

The fraction 15/115 equals 3/23. After extracting the tax: price before VAT = inclusive amount − VAT.

Worked examples

Each row was computed with these same formulas and rounded to two decimals:

The last row shows the rounding: 100 × 15/115 is 13.0434…, displayed as 13.04. Note it is not 15, which is what "15% of one hundred" suggests.

What does not carry 15%

The guideline itself says the amendment does not touch zero-rated or exempt supplies. For zero-rating it mentions exports of goods and services, international transport, qualifying medicines and medical equipment, and investment metals. And from 4 October 2020, real-estate supplies made by transferring ownership or the right of disposal as owner are exempt, following the amendment to paragraph (1) of Article 30 of the Implementing Regulations.

That is why the tool has a second option, 0%. It does not decide which rate applies to your supply: classification is the supplier's responsibility, and the authority on it is ZATCA. If you are registered and unsure, ask before issuing the invoice, not after.

Limits of the tool

• It does not issue invoices. A tax invoice comes from an e-invoicing system that meets ZATCA's requirements; see our e-invoicing and VAT guide.
• It does not compute input-VAT deduction or the periodic return.
• It does not handle discounts or multiple lines at different prices. Calculate each line separately.
• It does not compute zakat. VAT and zakat are different things; for a company's zakat base use the corporate zakat calculator.

Common mistakes

Mixing up "15% of the amount" and "15% on top of the price". If the advertised price is inclusive, the VAT is already inside it and must not be added again. ZATCA's guideline requires retail prices to reflect the VAT-inclusive value of the supply.

Rounding too early. Round at the end, not in the middle. The error shows up when you repeat the calculation across dozens of items.

Assuming everything carries 15%. Qualifying medicines and exports, for example, are zero-rated, and property transferred by ownership is exempt. When in doubt, ask.

Read also

E-invoicing and VAT guide · Corporate Zakat Calculator · Zakat Calculator · Real Estate Finance Calculator · All tools