OSS Procedure Explained: What Online Sellers Need to Know About EU VAT in 2026

Anyone selling goods to private customers in other EU countries will sooner or later have to deal with the One-Stop-Shop procedure (OSS). This article explains the basics but doesn't replace tax advice for your individual case.

What Is the OSS Procedure?

The OSS procedure was introduced to simplify VAT for cross-border online trade within the EU. Instead of having to register for VAT separately in every EU country you sell into, sellers report their EU-wide B2C distance sales centrally through a single filing in their home country.

Who Is Affected?

In principle, the OSS procedure affects online sellers who ship goods to private individuals (B2C) in other EU member states, for example through their own shops or marketplaces. There's an EU-wide threshold of €10,000 per year for such distance sales in total; once that's exceeded, VAT liability generally applies in the respective destination country, which can be reported centrally via OSS.

How Does OSS Reporting Work?

• Reporting happens quarterly through the online portal of the responsible tax authority.
• Sales are reported per destination country, each at the VAT rate applicable there.
• Payment of the reported tax is made collectively to the home authority, which forwards it to the respective EU countries.

Why Manual OSS Reporting Is Error-Prone

Without system support, sellers have to manually assign the delivery country and applicable tax rate for every order. With active sales in multiple countries, this quickly turns into a confusing spreadsheet with a high risk of errors. An inventory system with OSS support automatically assigns each order to the correct country and tax rate and prepares the reporting data in a structured way.

Conclusion

For online sellers with EU-wide B2C distance sales, the OSS procedure replaces individual per-country registrations with a single, quarterly filing; clean, country-specific recording of every order remains your task. An inventory management system that automatically assigns countries and tax rates takes a lot of manual work off your hands here. If you're unsure about the specific tax treatment, you should always consult your tax advisor.