The Single Administrative Document (SAD) is the primary customs declaration form used across the EU and UK for goods moving across international borders. It’s a standardised eight-part form containing all the information about imports, exports and goods in transit that customs authorities need.
If you’ve ever shipped an order to Europe, you’ll have encountered a Single Administrative Document before. It captures details about what you’re shipping, including the:
It’s a long form (it has 54 boxes to fill out!) but completing it carefully is important. An accurate SAD will help prevent your shipment from being delayed at customs.
Single Administrative Documents were first introduced on the 1st of January 1988. Prior to then, every country in Europe had its own customs paperwork. It required a lot of admin to regularly ship things internationally.
The introduction of SADs made it a lot simpler. Dozens of national entry forms were consolidated into a single, 54-box form with a standardised layout. For the form to work, other parts of international trade had to change. Commodity codes (HS Codes), Customs Procedure Codes (CPCs) and Incoterms where all harmonised. That gave Europe one form to fill out, and one trading language with which to do it.
It’s rare to hand over a paper SAD at a border these days, but we’re still using their data structure. It’s the framework on which digital customs submissions are filed across Europe.
When the UK left the EU in 2021, it became a distinct customs territory. Although built on the principles introduced in 1988, the UK’s customs framework began to diverge from the EUs. As a result, the UK stopped using SADs, instead using its own version: a C88 form.
C88s and CHEIF (Customs Handling of Import and Export Freight), the digital customs system were phased out in 2024. They've been replaced by the Customs Declaration Service (CDS), which like SADs, uses the framework established by the paper C88 form.
Shipping goods from Great Britain into the EU now requires two separate declarations. A UK export declaration (formerly C88) out of GB and a full EU SAD import declaration upon entry into the EU single market.
You'll need to complete a Single Administrative Document whenever you ship goods in or out of the EU or the UK. That applies to both imports and exports, whether you're sending individual orders or shipping inventory to an FBA warehouse.
It’s common for non-EU businesses to store inventory in the EU. It makes it quicker to fulfil orders from European customers when the stock is already close to them. The single market and its free movement of goods is in part, responsible for that speed. You can warehouse your stock in on EU country and fulfil to customers in others without have deal with customs procedures every time an order crosses a border. In this scenario, you fill out the SAD once – when your goods enter the EU.
There are three cases in which you might need to fill in another SAD, or an alternate form:
Most of the time, you won’t be filling out the Single Administrative Document yourself. Instead, you’ll be working with a customs broker. They’ll help you compile the necessary documents and information. The broker will have access to national level customs systems (like the CDS) and will submit the SAD for you.
Customs authorities use the information in the SAD to work out duties, verify your compliance status and gather trade statistics. To fill it out, you’ll need information about what you’re shipping, your businesses and the transaction. Here’s a non-exhaustive list of information you (and your customs broker) will need:
As you can see, SADs need a lot of data. If you plan to regularly ship goods cross-border, think about investing in systems that can help you manage it all. Knowing where all the information you need for a SAD is will save you time. However, the greater return on your investment is avoiding shipment delays, penalties, or even the seizure of your goods.
There are four areas that businesses commonly get wrong when it comes to Single Administrative Documents:
Accurate commodity codes are a must. They determine the rate of duty and tell customs if there’s any regulatory requirements applicable to your shipment. They’re also the part of this process that cause folks the most problems. There are thousands of codes representing subtle distinctions between similar products. Repeatedly getting your codes wrong can trigger customs audits which in turn lead to retrospective duty assessments. Customs brokers (like the team at SimplyVAT) can make it easier by helping you work out which codes you need for your products.
The country of origin is another tricky part of exporting and importing. Where the goods are from determines whether you’re eligible for preferential duty rates under a trade agreement or have to face a tariff. In some cases, it’s obvious where the country of origin is. However, most of the time, you’ll need to consider what your product is made of, where those materials are from, and where the manufacturing takes place.
Customs rules require you to declare the transaction value, including specific cost components. How this works varies a lot based on:
Getting it wrong will likely cost you money. Overvaluation means you’re likely to overpay duties and VAT, whilst undervaluing can lead to penalties.
The most common reason shipments get delayed at customs is document issues. The SAD needs to match supporting documents like commercial invoices or transport documents. If they don’t, customs authorities can hold a shipment whilst they verify your information.
