VAT in Spain for Foreign Online Sellers: OSS, Thresholds, and VAT Numbers

If you sell products or services online from outside Spain, or you live here while invoicing customers across Europe, sooner or later you’ll run into VAT (Value Added Tax), the consumption tax applied to nearly all sales within the European Union. The good news is that since 2021 there’s a system designed specifically to make life easier for anyone selling online in multiple countries: the OSS, or One Stop Shop. The bad news is that knowing when it applies and when it doesn’t means looking at three variables at once: where you live, where your customers are, and how much you invoice. This guide walks you through it.

The €10,000 threshold: the first number you need to know

If you sell goods to private individuals (not businesses) in other EU countries, or provide digital services — subscriptions, ebooks, software — to European consumers, there’s a combined threshold of €10,000 a year for the total of those cross-border sales within the EU. Below that figure, you can keep charging VAT at your home country’s rate, as if you were selling to a local customer. Once your sales to consumers in other EU countries exceed that threshold within the year, the rules require you to charge VAT at the rate of the country where each customer lives, not your own. In practice, that means if you sell to a private individual in Germany you apply the German VAT rate, if you sell to someone in Italy you apply the Italian rate, and so on for every country. Registering separately in each member state would be a serious administrative burden — which is exactly where the OSS comes in.

The OSS: declaring VAT for the whole EU from one place

The OSS (One Stop Shop) is a special scheme that lets you declare and pay VAT on all your sales to EU consumers through a single quarterly return, filed with the tax authority of just one country, instead of registering for VAT in every member state where you have customers. If you live or run your business in Spain, you register for the OSS through the AEAT (Agencia Estatal de Administración Tributaria, Spain’s tax agency), and from there you declare and pay the VAT owed to France, Germany, Portugal, or any other EU country where you’ve made sales, applying each country’s own rate. The AEAT then takes care of distributing that money to the countries it’s owed to. Registering for the OSS is voluntary, but once you’re past the €10,000 threshold, it’s by far the most practical option compared to registering country by country.

When you need a Spanish VAT number even if you use the OSS

The OSS handles VAT on sales to end consumers, but it doesn’t replace a Spanish tax ID in certain situations. If you establish your business in Spain — for example, if you’re a self-employed freelancer registered here or you have a Spanish company — you need a NIF (Número de Identificación Fiscal, tax ID number) which, once activated for intra-community transactions, functions as your Spanish VAT number. You also need to register for a Spanish VAT number, separately from the OSS, if you physically store goods in Spain (for instance, in a marketplace warehouse like Amazon’s), if you sell to other businesses (B2B transactions, where the VAT mechanism differs from the OSS), or if you import goods into Spain from outside the EU to sell them on. The OSS covers the VAT you charge end customers on cross-border sales; it doesn’t remove the need to be properly registered as an operator in Spain when your business has genuine physical or economic presence here.

At Zythos Business, we help foreign freelancers and small businesses untangle exactly this kind of crossroads: when to register for the OSS, when a Spanish VAT number is required, and how to file everything without risking penalties for procedural errors. If you sell online from Spain or to Spanish and European customers, we can review your specific situation and take the tax side off your plate so you can focus on selling.