VAT in Saudi Arabia Starts at a Number, Not a Date

The first piece of advice a new Saudi seller hears, usually from someone who means well, is to register for VAT on day one so that nothing can be held against them later. I treated that as sound for a long time, until I started following what the first year actually looks like. Sellers who registered early were filing returns on schedule against sales that came nowhere near the level that would have obliged them to register at all, and sellers who waited were counting a calendar year while the authority counts something else. The obligation does not begin with the first riyal, and it does not begin in January. It begins at a number, measured over a window that moves forward with every month you trade.

Fifteen percent you are only holding

The standard rate of VAT in Saudi Arabia is 15%, unchanged since 1 July 2020, and the Zakat, Tax and Customs Authority (ZATCA) restated it in guidelines published in May 2026. On a calculator it looks like nothing: you add it to the price of a taxable item, the buyer pays more, and nothing else about the sale changes. What changes is your bookkeeping; the extra sits with you until your return falls due, the VAT you paid on your own purchases and running costs is set against it, and only the difference ever leaves your account. A seller who builds a price on the net figure reaching their account ends up doing the arithmetic twice, which is why pricing is worth settling before any of this.

Registration is the line between the two states. It is what gives you a VAT registration number, and that number is what turns the addition into tax you collect and remit rather than a price you raised and named after a tax. The real question is therefore a question about a figure rather than about intent: when are you obliged to register, and when is it merely open to you? It is a separate obligation from commercial registration, with its own test, and neither one stands in for the other.

Two numbers and a window that moves

SAR 375,000 is the figure that obliges you to register, and SAR 187,500 is the figure that lets you. Both are published in the authority's guidelines and repeated on its own registration service page, and neither says much on its own; the weight sits in the period they are measured over and in what that period is allowed to contain.

The period is twelve months and it rolls. It is not a calendar year that opens in January and closes in December: in any given month you are looking back at the twelve months immediately behind you, and only those. Move the arithmetic from a fixed year to a sliding one and the month you cross the threshold moves as well, usually earlier than the seller expected rather than later.

What gets counted is taxable supplies, which is narrower than everything that arrived in your account. Exempt supplies drop out, so do supplies that fall outside the scope of VAT, and so do the proceeds of disposing of a capital asset, which means selling a company vehicle or a machine off your production line brings you no closer to the threshold whatever it fetched. That single carve-out separates a seller who believes they have crossed from a seller who actually has.

From SAR 187,500 up to SAR 375,000 there is a stretch where the decision belongs to you and to nobody else: registration is available and not compulsory. The voluntary threshold also has a second door that most people reading about it walk past, because it can be met on taxable expenses as readily as on taxable supplies. A seller building stock or buying equipment ahead of any real sales volume can reach it on purchases long before sales get anywhere near the same figure.

The mandatory threshold has a second test of its own, set out in Article 4 of the Implementing Regulations, and it faces forward rather than back. You can be required to register on supplies you expect over the coming twelve months, before any backward-looking total crosses SAR 375,000, which is why a seller who signs one large supply contract knows their number before they have earned a riyal of it. Once you do cross the mandatory threshold, the application is due within thirty days of the end of the month in which you crossed it.

Two phases running at once

No flat sentence about Saudi e-invoicing is correct, and that is the first thing worth saying, because two phases are running in parallel. Phase One, which the authority calls the Generation Phase, has bound every resident VAT-registered taxpayer since 4 December 2021; it is not a wave, and it is not a date anyone is waiting for, it is the floor that has been under everybody ever since. Phase Two, Integration and Linkage, arrives wave by wave according to revenue, and each wave is announced with its own band and its own deadline.

The bands come down, and that was the part I had not expected when I followed the waves in order. Wave 24 covered taxpayers whose VAT-taxable revenue exceeded SAR 375,000, with integration due by 30 June 2026; Wave 25, published on 24 July 2026, reaches everyone above SAR 187,500 in 2022, 2023, 2024 or 2025, and requires integration with the Fatoora platform by 1 February 2027 at the latest. As of 16 September 2026, no wave beyond the twenty-fifth has been announced.

A small seller who sat outside the scope for two years does not enter it by growing into it. They enter it standing still, because the number came down to meet them. That alone is reason enough to read each wave by its band and its date rather than wait for a notice to arrive and tell you that you are already inside one.

The invoice on a Tamm order

When a customer orders from your Tamm store, Tamm issues the invoice for that order, so you are not writing one by hand for every sale. It becomes a tax invoice, reported to ZATCA, once you connect your ZATCA account in your settings and turn on VAT collection. That invoice does not take over your own position with the authority. Whether you must register, and what you file once you have, is still set by your registration and your activity, not by a platform's paperwork, so keep your own records and read the thresholds above against your own last twelve months.

Where Tamm fits

Tamm is an AI-first e-commerce platform with its own factories, warehouses and supply chain in Saudi Arabia behind it: you describe the store you want and the agent builds it, we print your pieces on demand, and we store your own products and ship every order under your brand. How to start a clothing brand from Saudi Arabia · Browse the catalog

The year that slides forward

What stayed with me after all of this is not the rate, and not the two figures either. It is the shape of the period. The year a seller measures themselves by opens in January and closes in December, while the year the threshold is measured over is twelve months that creep forward with every month that passes, new sales entering at one end and old ones falling off the other without anyone opening a file or signing anything. Knowing where you stand inside that window today is a great deal cheaper than finding out a year from now that you crossed it in a month you can no longer name. When did you last look at the last twelve months instead of at this year?